XR-5880R/5890R

SERVICE MANUAL

AEP Model UK Model

Photo: XR-5890R
Model Name Using Similar Mechanism Tape Transport Mechanism Type

XR-C6100R MG-25G-136

SPECIFICATIONS
FM/MW/LW CASSETTE CAR STEREO

MICROFILM

TABLE OF CONTENTS 1. GENERAL
Location of Controls.. Setting the Clock... Labelling the Rotary Commander.. Using the Rotary Commander.. Installation... Connection... 5 6
Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat.

2. 3. 4. 5.

DISASSEMBLY.. 8 ASSEMBLY OF MECHANISM DECK. 10 MECHANICAL ADJUSTMENTS.. 13 ELECTRICAL ADJUSTMENTS
Test Mode.. 13 Tape Deck Section... 13 Tuner Section... 14

DIAGRAMS

6-1. Printed Wiring Boards Main Section (Side A). 17 Printed Wiring Boards Main Section (Side B). 19 6-2. Schematic Diagram Main (1/2) Section . 21 6-3. Schematic Diagram Main (2/2) Section . 23 6-4. Printed Wiring Board Panel Section (Side A), (Side B).. 25 6-5. Schematic Diagram Panel Section . 27 6-6. IC Pin Function Description.. 32
EXPLODED VIEWS.. 35 ELECTRICAL PARTS LIST. 38

SECTION 1 GENERAL

This section is extracted from instruction manual.

SECTION 2 DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

FRONT PANEL ASSY

1 Push the button (release). A
2 Remove the front panel assy to the direction of the arrow A.

COVER ASSY

Cover assy
SUB PANEL, MECHANISM DECK (MG-25G-136)

5 Screw (PTT2.6 6)

3 Connector (CN302)
6 Mechanism deck (MG-25G-136) 4 Flexible flat cable (CN301)

2 Sub panel

1 Three screws (PTT2.6 8)

MAIN BOARD, HEAT SINK

5 Two screws (PTT 2.6 8) 5 Three screws (PTT 2.6 12)
3 Two ground point screws

1 Screw (PTT2.6 8)

5 Screw (PTT 2.6 8)

4 Main board

6 Heat sink

2 Rubber cap (25)

1 Two screws (PTT2.6 8)
SECTION 3 ASSEMBLY OF MECHANISM DECK
Note: Follow the assembly procedure in the numerical order given.

HOUSING

5 Fit projection on C part. 2 Install the hanger onto two claws of the housing. 4 Fit claw on B part.
7 Holder the hanger by bending the claw. 1 Install the catch to the hanger.

hanger

3 Put the housing under A part.
6 Fit projection on D part.

housing

C part 8 Hold the hanger by bending the claw.

D part

A part

B part

ARM (SUCTION)
2 Move the arm (suction) in the arrow direction and fit on projection.

projection

1 Fit the arm (suction) on the shaft.

LEVER (LDG-A) / (LDG-B)

shaft A shaft B shaft C

shaft A

shaft B
1 Fit the lever (LDG-A)on shafts A C and install it.
3 type-E stop ring 2.Fit the lever (LDG-B) on shafts A and B and install it.

GEAR (LDG-FT)

gear (LDG-D) hole
6 polyethylene washer 5 gear (LDG-FT)
lever (LDG-A) gear (LDG-FB)
4 Align hole in the gear (LDG-D) with hole the lever (LDG-A)

tension spring (LD-2)

2 tension spring (LD-1)
3 Move the lever (LDG-B) in the arrow direction.

GUIDE (C)

2 guide (C)

1 three claws

MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901)
3 Capstan/reel motor(M901)
2 Two precision screws (P 2 2)

1 Belt

SECTION 4 MECHANICAL ADJUSTMENTS

1. Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belt capstan idlers 2. Demagnetize the playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the power supply voltage unless otherwise noted. Torque Measurement
Mode Forward Forward Back Tension Reverse Reverse Back Tension FF, REW Torque Meter CQ-102C CQ-102C CQ-102RC CA-102RC CQ-201B Meter Reading 30 - 65 gcm (0.42 - 0.90 ozinch) 0.5 - 4.5 gcm (0.01 - 0.06 ozinch) 30 - 65 gcm (0.42 - 0.90 ozinch) 0.5 - 4.5 gcm (0.01 - 0.06 ozinch) 60 - 200 gcm (0.83 - 2.78 ozinch)
SECTION 5 ELECTRICAL ADJUSTMENTS
TEST MODE This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. <Set the Test Mode> 1. Set the power select switch (S501) is A position. 2. Turn ON the regulated power supply. (All LEDs on the set lights up, and the clock is displayed.) Note: Press the [OFF] button, if the clock is not displayed. 3. Push the preset [4] button. 4. Push the preset [5] button. 5. Press the preset [1] button for more than two seconds. 6. Then the display indicates all lights, the test mode is set. <Release the Test mode> 1. Push the [OFF] button. 2. Return the power select switch (S801) to initially set position. See the adjustment location from on page 16 for the adjustment.

TAPE DECK SECTION

Tape Speed Adjustment Setting:

0 dB=0.775 V

Tape Tension Measurement
Mode Forward Reverse Tension Meter CQ-403A CQ-403R Meter Reading more than 90 g (more than 3.18 oz) more than 90 g (more than 3.18 oz)
test tape WS-48A (3 kHz, 0 dB)
speed checker or frequency counter 4 set speaker out terminal
Procedure: 1. Put the set into the FWD PB mode. 2. Adjust adjustment resistor for inside capstan motor so that the reading on the speed checker or frequency counter becomes in specification. Specification: Constant speed
Speed checker 1.5 to +2.5% Frequency counter 2,955 to 3,075 Hz
Adjustment Location: See page 16.

TUNER SECTION

0 dB=1 V
Cautions during repair When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
Note: Adjust the tuner section in the sequence shown below.
FM Stereo Separation Adjustment Setting: [SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 F set Carrier frequency Output level Mode Modulation : 98.0 MHz speaker out terminal : 70 dB (3.2 mV) : stereo : main: 1 kHz, 20 kHz deviation (26.7%) sub: 1 kHz, 20 kHz deviation (26.7%) : 19 kHz pilot: 7.5 kHz deviation (10%) 4 + level meter

1. 2. 3. 4.

FM Auto Scan/Stop Level Adjustment FM Stereo Separation Adjustment FM Signal Meter Adjustment AM (MW) Auto Scan/Stop Level Adjustment
FM Auto Scan/Stop Level Adjustment Setting: [SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 F set Carrier frequency Output level Mode Modulation : 98.0 MHz : 22 dB (12.6 V) : mono : 1 kHz, 22.5 kHz deviation (30%)

Procedure:

FM Stereo signal generator output channel L-CH R-CH R-CH L-CH Level meter connection L-CH L-CH R-CH R-CH Level meter reading (dB) A B Adjust RV4 on TU1 for minimum reading. C D Adjust RV4 on TU1 for minimum reading.
Procedure: 1. Set to the test mode. (See page 13). 2. Push the [SOURCE] button and set to FM. Display

REG INTRO

L-CH Stereo separation: A-B R-CH Stereo separation: C-D The separations of both channels should be equal. Specification: Separation more than 30 dB Adjustment Location: See page 16.
3. Adjust with the volume RV2 on TU1 so that the FM indication turns to FM0 indication on the display window. But, in case of already indicated FM0, turn the RV2 so that put out light 0 indication and adjustment. Display
FM Signal Meter Adjustment
AM (MW) Auto Scan/Stop Level Adjustment

Setting:

[SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 F set
Make this adjustment after FM Auto Scan/Stop Level Adjustment. Setting: [SOURCE] button: MW

pF 65 pF

Carrier frequency Output level Mode Modulation
: 98.00 MHz : 35 dB (56.2 V) : mono : no modulation
AM RF signal generator AM dummy antenna (50 )
Procedure: 1. Set to the test mode. (See page 13.) 2. Push the [SOURCE] button and set to FM. Display

set antenna jack (J1)

Carrier frequency : 999 kHz 30% amplitude modulation by 1 kHz signal Output level : 33 dB (44.7 V)
3. Push the [6] button. 4. Adjust RV1 so that the display indication is 10.2. Display
Procedure: 1. Set to the test mode. (See page 13.) 2. Push the [SOURCE] button and set to FM. 3. Push the [MODE] button and set to MW. Display
Specification: Display indication: 10.0 to 10.4 Adjustment Location: See page 16.

Display

4. Adjust with the volume RV1 on TU1 so that the MW indication turns to MW0 indication on the display window. But, in case of already indicated MW0, turn the RV1 so that put out light 0 indication and adjustment.

Adjustment Location:

SET UPPER VIEW

Tape Speed Adjustment

RV1 AM (MW) Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment
RV4 FM Stereo Separation Adjustment
RV1 FM Signal Meter Adjustment
XR-5880R/5890R SECTION 6 DIAGRAMS

6-1. PRINTED WIRING BOARD MAIN SECTION (SIDE A)
Semiconductor Location Ref. No. Location Ref. No. D1 D61 D71 D81 D90 D91 D92 D93 D361 D501 D551 D552 D553 D554 D555 D556 D557 D558 D559 D561 D562 D571 D602 D604 D605 D611 D612 D613 D614 D615 D616 D617 D618 D621 D622 D623 D624 D625 D631 D653 D661 D662 F-14 G-9 D-11 E-3 K-10 K-9 K-9 K-9 H-3 H-8 K-13 K-13 J-11 K-12 J-11 J-12 J-11 J-11 J-11 K-13 K-13 C-5 B-4 H-10 C-5 C-6 C-7 C-6 C-6 B-7 B-8 B-8 B-8 D-9 E-8 E-7 E-7 E-7 J-2 I-8 D-5 C-5 D701 D707 IC1 IC51 IC90 IC301 IC361 IC401 IC501 IC611 IC652 IC671 Q51 Q61 Q71 Q81 Q82 Q90 Q121 Q151 Q171 Q181 Q251 Q271 Q281 Q361 Q362 Q364 Q365 Q571 Q621 Q622 Q633 Q651 Q652 Q661 Q701 Q702 Q703
Location F-2 F-2 E-12 I-11 J-10 G-11 I-2 E-9 H-6 A-9 G-2 E-2 J-13 G-9 D-11 E-3 E-2 K-9 F-8 F-8 C-10 C-11 F-9 C-9 C-10 I-3 I-2 G-3 H-3 F-6 D-8 E-7 J-2 J-8 J-8 C-5 F-3 F-2 F-2
Noteon Printed Wiring Board: X : parts extracted from the component side. : internal component. Abbreviation G : German model.

MAIN SECTION (SIDE B)

Semiconductor Location Ref. No. Location D362 D601 D651 D672 D673 Q631 H-13 C-13 F-13 E-13 E-13 J-12

(Page 26)

6-2. SCHEMATIC DIAGRAM MAIN (1/2) SECTION Refer to page 29 for IC Block Diagrams.

Waveforms

5.4Vp-p

32.8KHz

IC501 &

5.6Vp-p

3.68MHz

IC501 (

4.332MHz

IC51 4

Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. C : panel designation. U : B+ Line. Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : FM < > : TAPE PLAYBACK : Impossible to measure Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. F : FM f : AM (MW) E : TAPE PLAYBACK Abbreviation G : German model.

(Page 23, 24)

6-3. SCHEMATIC DIAGRAM MAIN (2/2) SECTION Refer to page 29 for IC Block Diagrams.

(Page 21, 22)

(REMOTE IN)

(Page 27)

6-4. PRINTED WIRING BOARD PANEL SECTION (SIDE A)
Semiconductor Location Ref. No. Location D902 D903 D904 D951 Q941 Q942 Q943 Q944 Q945 B-12 B-12 B-11 C-9 B-1 C-1 C-1 C-1 C-2

PANEL SECTION (SIDE B)

(Page 19)
Note: X : parts extracted from the component side. : internal component. b : Pattern from the side which enables seeing. Abbreviation G : German model.
Semiconductor Location Ref. No. Location IC901 A-8

6-5. SCHEMATIC DIAGRAM PANEL SECTION

(Page 23)

Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. C : panel designation. U : B+ Line. Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.
Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : FM < > : TAPE PLAYBACK : Impossible to measure Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.
Circled numbers refer to waveforms. Signal path. F : FM f : AM (MW) E : TAPE PLAYBACK Abbreviation G : German model.
IC Block Diagrams MAIN Board

TB2118F (EL)

AM CP OUT FM CP OUT

BA4558F

SAA6588T-118
SCOUT MPX MAD PSWN PAUSE DETECTOR VSSA VDDA VREF CIN AFIN 13 IIC BUS SLAVE TRANSCEIVER 9 SDA 10 SCL

OUTIFC 1CH IN2CH

17 AMP

7 OUT2

MULTI PATH DETECTOR POWER SUPPLY & RESET 57kHz 8th ORDER BAND-PASS FILTER SIGNAL QUALITY DECODER 4 CLOCK INTERFACE REGISTER DATA TEST CONTROL OSCILLATOR & CLOCK DATA
VCC 4BIT SWALLOW COUNTER SEEK/RECP PRESCALLER 12BIT PROGRAMMABLE COUNTER + + REGULATOR SEEK/RECP

VDD AMP

+IN1 3

CLOCKED COMPARATOR

IC361 LB1638M
RDS/RDBS DEMODULATOR RDS/RDBS DECODER

PHASE COMPARATOR

20BIT IF COUNTER 40BIT SHIFT REGISTER

10 N.C.

CONTROL LOGIC

OSCILLATOR

REFERENCE DIVIDER

9 OUT1

MRO MPTH 3 TCON 4 OSCO 5 OSCI 6 VSSD 7 VDDD 8 DAVN
18BIT ON/OFF BUFFER SERIAL INTERFACE 18BIT

VCC 3 IN2 4

8 VS 7 OUT2

I/O PORT

OUTPUT PORT

6 N.C.

CXA2509AQ-T4
LINEOUT2 TAPEIN2 PBOUT2 AUXIN2 PBEQ2 MSSW

CE DIN CK DOUT

OUT-1 OUT-2

TDA7462D

120/70 T2 +
SE3L SE3R MUTE SDA SCL PAUSE

+ 20 MSMODE NR BIAS

PBFBPBRINPBREFPBFINF2
X1 TAPE/AUX TAPE EQ FWD/RVS

MS MODE

19 DRSW 18 TAPESW 17 INSW 16 NC
PAUSE DETECT INPUT GAIN & AUTO ZERO TREBLE/ BASS CONTROL CIRCUIT FRONT FADER

REAR SIDE SELECTOR

20 OUT RL

T1 120/70

INPUT GAIN

LOUDNESS CONTROL CIRCUIT

REAR FADER

19 OUT RR

TAPEIN1 AUXIN1

LINEOUT1

PBOUT1

SUBWOOFER LP

FADER 18 SUBOUT+ 17 SUBOUT SDA

SUBWOOFER OUT IIC BUS

DIGITAL CONTROL CIRCUIT

SCL 16 VDD 15 GND

CREF 14

POWER SUPPLY

SE1L SE1R MD+ MD CDL+ CDL CDR CDR+ PDR PDGND PDL SE2L SE2R

FRONT SIDE SELECTOR

VOLUME CONTROL CIRCUIT

SOFT MUTE

VOICE BANDPASS HP LP

22 OUT FL

VCT 35 PBGND 36

VCT + LPF

VCC + F3 X1
MS ON/ 15 NC OFF DETECT 14 MSOUT
INPUT MULTIPLEXER & MIXING STAGE

FRONT FADER COMPANDER

PBFIN1 37

21 OUT FR

PBREFPBRINPBFB1 40

13 DGND

12 MSTC 11 G1FB

24dB 9 10

NC MODE2 MODE1 STB

TDA7385

BA3918-V3
9 + + REGULATOR OVER VOLTAGE PROTECT

VDD AMP VCC ANT COM

TAB PW-GND OUT2 ST-BY OUT2+ Vcc1 OUT1 PW-GND1 OUT1+ SVR IN1 IN2 S-GND IN4 IN3 AC-GND OUT3+ PW-GND3 OUT3 Vcc2 OUT4+ MUTE OUT4 PW-GND4 DIAGNOSTICS OUT
6-6. IC PIN FUNCTION DESCRIPTION
IC501 MASTER U-COM (MB90574PFV-G-177-BND) Pin No. 21 to to 39 40, 53 Pin Name SEKOUT AFSEEK ST IND TUMUTE FM ON TU ON VCC BUSON SYSRST DOORSW LCDSO LCDCKO BEEP LCDCE UNISI UNISO UNICKI SD IN SIRCS PLLSI PLLSO PLLCKO PLLCE ILL ON NOISE ON VSS C AD ON RE IN0 RE IN1 DVcc DVss AVcc AVRH AVRL AVss KEYIN0 KEYIN1 RC INO DSTSEL NOISE DET D BASS MTP VSM I/O O O I/O O O O O O I O O O O I O I I I I O O O O O O I I I I I I I I I I Function Seek out AF seek Not used Stereo display input and control MONO output Tuner mute output FM_ON output TUNER_ON output Power supply terminal +5V Not used Bus ON control output SYSTEM RESET output Door OPEN/CLOSE detection input LCD serial data output LCD serial clock output BEEP output LCD chip enable output BUS serial data input BUS serial data output BUS serial clock input Signal detection input Not used Remote commander (infrared) input PLL data input PLL data output PLL clock output PLL chip enable output Illumination power control output Not used NOISE DET discharge control output Ground Capacity connection terminal for power supply stabilization AD conversion power supply control output Rotary encoder input 0 Rotary encoder input 1 Power supply input for D/A Ground for D/A Not used Power supply input for analog A/D converter VRef + input A/D converter VRef input Ground for analog KEY input 0 KEY input 1 Rotary commander input Destination setting NOISE DET, Noise level input for SEEK D_BASS KEY input Tuner multipath input S_meter voltage detection input

Pin No. 82 to 95 to 111

Pin Name Vcc RAMBU PW SEL TESTIN DOORIND COLOR SW COLER SEL VSS MUTE COSTOM FILE CD-TEXT AMPMUT FLASH W I2C SIO I2O CKO RC IN1 X1A X0A DAVN KEYACK BU IN ILLIN TELATT NOSESW ACCIN HSTX MD2 MD1 MD0 RSTX Vss X0 X1 Vcc 9K/10K AMTLIN AMSIN REEL POS0 POS1 POS2 POS3 LM EJ LM LD CM ON
I/O I I I O I I O I I O I I/O O I I I I I I I I I I I I I I I I I O O O
Function Power supply terminal +5V RAM reset detection input (Non RDS) Power select initial setting input Not used Test mode detection input Not used Not used Color switching, L:2 color, H:Single color Color selection, L:AMBER, H:GREEN Ground Not used System mute output terminal Custom file, L:Non, H:Yes CD text, L:Non, H:Yes Power amplifier mute control output terminal Flash memory writing mode detection input Electronic Vol & RDS serial data input/output Electronic Vol & RDS serial clock output Rotary commander input Low speed oscillator connection terminal (32.768 KHz) Low speed oscillator connection terminal (32.768 KHz) RDS signal quality detection input Keyack knowledge input Backup detection input terminal ILLIN signal detection input terminal (VAG only) Telephone ATT detection input Front panel detachment/attachment detection input terminal ACC detection input terminal Not used Hardware standby input terminal To Vss To Vcc To Vcc Microprocessor reset input terminal Ground High speed oscillator connection terminal ( MHz) High speed oscillator connection terminal ( MHz) To Vcc Not used 9K/10K step switching detection terminal Not used Auto metal detection terminal Song presence/absence detection input during AMS Reel rotation detection input Position signal detection input 0 Position signal detection input 1 Position signal detection input 2 Position signal detection input 3 Loading motor control output (EJECT) Loading motor control output (LOAD) Tape capstan motor control output

Pin No. 120

Pin Name TAPEON N ROUT AMSON MTLON DOLON TAPMUT AMPON Vss PW ON

I/O O O O I/O I/O O O O

Function TAPE power supply control output FOR/REV control output AMS control output Metal control input/output DOLBY control input/output Audio signal selection control output terminal Power IC standby control output Ground System power supply control output

SECTION 7 EXPLODED VIEWS

NOTE: -XX, -X mean standardized parts, so they may have some difference from the original one. Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE). (RED) Parts color Cabinets color The mechanical parts with no reference number in the exploded views are not supplied. Hardware (# mark) list and accessories and packing materials are given in the last of this parts list. Abbreviation G : German model SE : South European model The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.

(1) CHASSIS SECTION

MG-25G-136

#3 F781

#2 #4 #2 #2
#1 #2 #2 Front panel assy
Ref. No. * 5 * 6 * 6 * 6 * 6 7
Part No. 3-030-828-01 3-935-003-01 3-027-437-04 X-3367-636-1 3-033-846-01
Description PANEL, SUB SPRING, TORSION DOOR, CASSETTE LOCK ASSY INSULATED PLATE

Remark

Ref. No. * * 10 * * 17 F781
Part No. X-3373-269-1 1-777-989-31 3-018-147-01 3-031-056-01 3-935-014-01 3-009-813-41 3-012-859-01 3-937-650-01 3-031-828-01 1-782-381-11

Description

COVER ASSY (ISO) CORD (WITH CONNECTOR)(ATT)(XR-5890R) BRACKET (IC) HEAT SINK CUSHION (U) CHASSIS CAP (25), RUBBER PLATE (C), GROUND BRACKET (REG.IC) CORD (WITH CONNECTOR)(ISO-P&S)
A-3317-341-A MAIN BOARD, COMPLETE (XR-5890R: SE,UK,AEP) A-3317-342-A MAIN BOARD, COMPLETE (XR-5890R: G) A-3317-355-A MAIN BOARD, COMPLETE (XR-5880R: SE,UK,AEP) A-3317-356-A MAIN BOARD, COMPLETE (XR-5880R: G) 3-915-923-01 SCREW, GROUND POINT
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE)(10A)

(2) FRONT PANEL SECTION

not supplied (KEY board)

LCD901

Ref. No. Part No. 3-030-838-01 3-030-838-11 3-030-832-01 3-030-832-11 3-932-475-01 3-030-834-01 3-030-835-01 3-031-027-01 3-030-831-01 3-030-830-01 Description BUTTON (RELEASE)(XR-5890R) BUTTON (RELEASE)(XR-5880R) LEVER (S/A)(XR-5890R) LEVER (S/A)(XR-5880R) SPRING (RELEASE) BUTTON (M/S) BUTTON (1-6) BUTTON (P/P/A) BUTTON (SOURCE) KNOB (VOL)
Remark Ref. No. * 61 * * * 67 Part No. 3-030-837-01 3-030-837-11 3-030-839-01 3-030-824-01 1-694-508-11 3-030-825-01 3-030-827-01 X-3376-781-1 X-3376-782-1 3-030-497-01 Description BUTTON (D-BASS)(XR-5890R) BUTTON (D-BASS)(XR-5880R) SHEET (REFLECTOR) PLATE, LIGHT GUIDE CONDUCTIVE BOARD, CONNECTION HOLDER (LCD) PANEL, FRONT BACK FRONT PANEL ASSY (XR-5890R) FRONT PANEL ASSY (XR-5880R) PLATE (B), GROUND Remark

LCD901 1-803-497-11 DISPLAY PANEL, LIQUID CRYSTAL
(3) MECHANISM DECK SECTION (MG-25G-136)

160 163

161 162

153 152

Ref. No. 151 * 158 * 159 160
Part No. A-3291-667-A 3-019-130-01 3-019-131-01 3-020-539-01 3-020-540-01 3-020-542-01 3-341-753-11 3-020-533-01 3-020-532-01 3-020-534-01
Description CLUTCH (FR) ASSY LEVER (LDG-A) LEVER (LDG-B) SPRING (LD-1), TENSION SPRING (LD-2), TENSION GEAR (LOADING FT) WASHER, POLYETHYLENE HOUSING ARM (SUCTION) HANGER

Ref. No. HP901 M901

Part No. 3-933-346-01 3-933-344-01 3-014-798-01 3-364-151-01 X-3377-036-1 3-017-302-01 3-936-853-01 3-701-437-21 1-500-196-21 A-3291-665-A
Description CATCHER GUIDE (C) SCREW (HEAD), SPECIAL WASHER CHASSIS (S) ASSY (G) BELT (25) FLYWHEEL (F) WASHER HEAD, MAGNETIC (PLAYBACK) MOTOR ASSY, MAIN (CAPSTAN/REEL)
Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. When indicating parts by reference number, please include the board name.
SECTION 8 ELECTRICAL PARTS LIST
Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. -XX, -X mean standardized parts, so they may have some difference from the original one. Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. RESISTORS All resistors are in ohms METAL: Metal-film resistor METAL OXIDE: Metal Oxide-film resistor F : nonflammable SEMICONDUCTORS In each case, u: , for example: uA.: A., uPA.: PA., uPB.: PB., uPC.: PC., uPD.: PD. CAPACITORS uF : F COILS uH : H Abbreviation G : German model SE : South European model

Ref. No.

Part No.
Description KEY MOUNTED BOARD, COMPLETE ****************************
LSW932 1-771-610-11 SWITCH, TACTILE (WITH LED)(2/SET UP) LSW933 1-771-610-11 SWITCH, TACTILE (WITH LED)(1/N) < PILOT LAMP > PL901 PL902 1-517-633-21 LAMP, PILOT 1-517-633-21 LAMP, PILOT < TRANSISTOR >

* * * *

1-694-508-11 3-030-824-01 3-030-825-01 3-030-839-01 3-030-840-01
CONDUCTIVE BOARD, CONNECTION PLATE, LIGHT GUIDE HOLDER (LCD) SHEET (REFLECTOR) PLATE (B), GROUND < CAPACITOR >

C952 C953 C954 C955 C956

1-163-033-00 1-163-251-11 1-165-319-11 1-165-319-11 1-164-222-11
CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP < CONNECTOR >
0.022uF 100PF 0.1uF 0.1uF 0.22uF

50V 50V 50V 50V 25V

Q941 Q942 Q943 Q944 Q945
8-729-106-60 8-729-900-53 8-729-106-60 8-729-900-53 8-729-900-53
TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR < RESISTOR >
2SB1115A DTC114EK 2SB1115A DTC114EK DTC114EK
CNP901 1-785-773-11 PIN, CONNECTOR 15P < DIODE > D902 D903 D904 D951 8-719-105-99 8-719-105-99 8-719-105-99 8-719-976-99 DIODE DIODE DIODE DIODE < IC > IC901 8-759-366-34 IC LC75824E < LIQUID CRYSTAL DISPLAY > LCD901 1-803-497-11 DISPLAY PANEL, LIQUID CRYSTAL < SWITCH > LSW901 LSW902 LSW903 LSW905 LSW906 LSW921 LSW922 LSW923 LSW925 LSW926 LSW927 LSW928 LSW929 LSW930 LSW931 1-771-610-11 1-762-620-21 1-762-620-21 1-762-620-21 1-771-610-11 1-762-620-21 1-762-620-21 1-762-620-21 1-762-620-21 1-762-620-21 1-762-620-21 1-771-610-11 1-771-610-11 1-771-610-11 1-771-610-11 SWITCH, TACTILE (WITH LED)(OFF) SWITCH, KEY BOARD (WITH LED)(SOURCH) SWITCH, KEY BOARD (WITH LED)(MODE *) SWITCH, KEY BOARD (WITH LED)((SOUND) SWITCH, TACTILE (WITH LED)(SHIFT) SWITCH, KEY BOARD (WITH LED)(6) SWITCH, KEY BOARD (WITH LED)(PROST ) SWITCH, KEY BOARD (WITH LED)(PROST +) SWITCH, KEY BOARD (WITH LED)(AF/TA) SWITCH, KEY BOARD (WITH LED)(PTY) SWITCH, KEY BOARD (WITH LED)(DSPL) SWITCH, TACTILE (WITH LED)(6) SWITCH, TACTILE (WITH LED)(5/ENTER) SWITCH, TACTILE (WITH LED)(4/n) SWITCH, TACTILE (WITH LED)(3/PLAY MODE) RD6.2M-B1 RD6.2M-B1 RD6.2M-B1 DTZ5.1B
R901 R902 R903 R904 R905 R906 R907 R921 R922 R923 R924 R925 R926 R927 R928 R929 R930 R931 R932 R941 R942 R943 R944 R951 R953 R954 R955 R956 R957 R961 R962
1-216-647-11 1-216-647-11 1-216-647-11 1-216-651-11 1-216-655-11 1-216-655-11 1-216-659-11 1-216-647-11 1-216-647-11 1-216-647-11 1-216-651-11 1-216-655-11 1-216-655-11 1-216-659-11 1-216-663-11 1-216-667-11 1-216-671-11 1-208-806-11 1-208-810-11 1-216-073-00 1-216-065-00 1-216-073-00 1-216-065-00 1-216-041-00 1-216-121-00 1-216-049-11 1-216-049-11 1-216-049-11 1-216-109-00 1-216-029-00
METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP RES,CHIP METAL CHIP RES,CHIP METAL CHIP RES,CHIP METAL CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP METAL CHIP METAL CHIP

Remark 10V 25V 50V 50V 50V 50V 50V 16V 50V 50V 50V 50V 16V 50V 25V 25V 25V 50V 50V 25V 16V 50V 50V 16V 50V 100V 50V 50V 16V 16V 25V 16V 16V 25V 50V 50V 50V 50V 50V 16V 25V 50V 25V 50V 50V 50V 16V 50V 50V 50V 16V 25V 25V 50V 50V 50V 50V 50V
5% 10% 20% 10% 10% 10% 10% 5% 5% 10% 20% 10% 5%
1-216-081-00 METAL CHIP 1-216-295-00 SHORT 1-216-295-00 SHORT
< ROTARY ENCODER > RE901 1-475-014-11 ENCODER, ROTARY < SWITCH > S901 S981 1-771-290-11 SWITCH, SLIDE (SEEK/AMS/MANU +) 1-762-937-11 SWITCH, ROTARY (D-BASS SW)
************************************************************ * A-3317-341-A MAIN MOUNTED BOARD, COMPLETE ***************************** (XR-5890R: SE,UK,AEP) A-3317-342-A MAIN MOUNTED BOARD, COMPLETE ***************************** (XR-5890R: G) A-3317-355-A MAIN MOUNTED BOARD, COMPLETE ***************************** (XR-5880R: SE,UK,AEP) A-3317-356-A MAIN MOUNTED BOARD, COMPLETE ***************************** (XR-5880R: G) 3-019-147-01 3-031-056-01 3-031-828-01 7-685-793-09 7-685-795-09 BRACKET (IC) (M) HEAT SINK BRACKET (REG.IC) SCREW +PTT 2.6X8 (S) SCREW +PTT 2.6X12 (S) < CAPACITOR > C1 C2 C3 C4 C5 C6 C7 C8 C10 C11 C12 1-163-235-11 1-163-133-00 1-124-233-11 1-124-233-11 1-124-233-11 1-163-021-11 1-163-021-11 1-163-009-11 1-163-009-11 1-163-020-00 CERAMIC CHIP CERAMIC CHIP ELECT ELECT ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 22PF 470PF 10uF 10uF 10uF 0.01uF 0.01uF 0.001uF 0.001uF 0.0082uF 0.047uF 5% 5% 20% 20% 20% 10% 10% 10% 10% 10% 10% 50V 50V 16V 16V 16V 50V 50V 50V 50V 50V 25V
5% 10% 10% 5% 20% 20% 10% 20% 20% 10% 10% 10% 10% 5% 0.5PF 10% 10% 10% 10% 5% 5% 10% 10% 10% 10% 20% 10% 10% 10% 0.5PF 10% 20% 20% 20%
1-163-809-11 CERAMIC CHIP
Ref. No. C173 C174 C181 C183 C184 C201 C202 C205 C207 C208 C210 C211 C235 C251 C252 C253 C271 C273 C274 C281 C283 C284 C301 C302 C303 C304 C305 C306 C331 C361 C362 C363 C364 C365 C366 C401 C402 C404 C405 C408 C409 C502 C503 C504 C505 C506 C507 C509 C510 C511 C527 C571 C601 C602 C611 C612 C613 Part No. Description 0.22uF 100PF 4.7uF 0.22uF 100PF 330PF 330PF 0.01uF 0.22uF 0.001uF 680PF 4.7uF 10PF 0.0082uF 2.2uF 2.2uF 4.7uF 0.22uF 100PF 4.7uF 0.22uF 100PF 100uF 100PF 0.47uF 0.01uF 0.1uF 0.01uF 22uF 0.1uF 0.1uF 0.01uF 10uF 22uF 220uF 100uF 0.01uF 10uF 22uF 100PF 100PF 0.1uF 0.1uF 0.1uF 0.1uF 24PF 22PF 0.01uF 100uF 0.1uF 0.1uF 100PF 3300uF 100PF 10uF 10uF 0.22uF 10% 5% 20% 10% 5% 5% 5% 10% 10% 10% 10% 20% 0.5PF 10% 20% 20% 20% 10% 5% 20% 10% 5% 20% 5% 10% 10% 10% 10% 20% Remark 16V 50V 50V 16V 50V 50V 50V 50V 16V 50V 50V 50V 50V 50V 50V 50V 50V 16V 50V 50V 16V 50V 10V 50V 16V 50V 25V 50V 16V 50V 50V 50V 16V 16V 16V 10V 50V 16V 16V 50V 50V 25V 25V 25V 25V 50V 50V 50V 10V 25V 50V 50V 16V 50V 16V 16V 16V Ref. No. C614 C616 C617 C621 C622 C623 C631 C632 C641 C653 C654 C655 C661 C671 C672 C673 C674 C675 C676 C702 Part No. 1-107-909-11 1-107-823-11 1-136-165-00 1-124-589-11 1-124-257-00 1-109-982-11 1-164-222-11 1-164-222-11 1-163-009-11 1-163-021-11 1-125-701-11 1-126-933-11 1-109-982-11 1-126-157-11 1-126-157-11 1-126-157-11 1-126-157-11 1-126-157-11 1-126-157-11 Description ELECT CERAMIC CHIP FILM ELECT ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP DOUBLE LAYER ELECT CERAMIC CHIP ELECT ELECT ELECT ELECT ELECT ELECT 47uF 0.47uF 0.1uF 47uF 2.2uF 1uF 0.22uF 0.22uF 0.001uF 0.01uF 0.047F 100uF 1uF 10uF 10uF 10uF 10uF 10uF 10uF 0.1uF 20% 10% 5% 20% 20% 10% Remark 16V 16V 50V 16V 50V 10V 25V 25V 50V 50V 5.5V 16V 10V 16V 16V 16V 16V 16V 16V 25V 1-164-489-11 CERAMIC CHIP 1-163-251-11 1-126-163-11 1-164-489-11 1-163-251-11 1-163-263-11 1-163-263-11 1-163-021-11 1-164-489-11 1-163-009-11 1-163-007-11 1-126-163-11 1-163-227-11 1-163-020-00 1-124-257-00 1-124-257-00 1-126-163-11 1-164-489-11 1-163-251-11 1-126-163-11 1-164-489-11 1-163-251-11 1-124-584-00 1-163-251-11 1-107-823-11 1-163-021-11 1-164-004-11 1-163-021-11 1-124-234-00 1-165-319-11 1-165-319-11 1-163-021-11 1-126-157-11 1-124-234-00 1-126-934-11 1-124-584-00 1-163-021-11 1-124-233-11 1-124-234-00 1-163-251-11 1-163-251-11 1-164-004-11 1-164-004-11 1-164-004-11 1-164-004-11 1-163-102-00 1-163-235-11 1-163-021-11 1-124-584-00 1-164-004-11 1-165-319-11 1-163-251-11 1-107-885-31 1-163-251-11 1-124-233-11 1-124-233-11 CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP ELECT ELECT ELECT CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT ELECT ELECT ELECT CERAMIC CHIP ELECT ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP ELECT ELECT

1-216-073-00 METAL CHIP 1-216-097-00 1-216-097-00 1-216-097-00 1-216-097-00 RES,CHIP RES,CHIP RES,CHIP RES,CHIP
10K 5% 1/10W (XR5890R: G/XR5880R: G) 100K 5% 1/10W 100K 5% 1/10W 100K 5% 1/10W 10OK 5% 1/10W (XR5880R) 100K 100K 5% 5% 1/10W 1/10W
1-216-097-00 RES,CHIP 1-216-089-00 RES,CHIP

R518 R519

1-216-097-00 RES,CHIP 1-216-097-00 RES,CHIP
Ref. No. Part No. Description < COMPOSITION CIRCUIT BLOCK > RB601 RB602 RB701 1-233-413-11 RES, CHIP NETWORK 2.2K (3216) 1-233-810-21 RES, NETWORK 100K (3216) 1-233-810-21 RES, NETWORK 100K (3216) < VARIABLE RESISTOR > RV1 1-223-836-11 RES, ADJ, CARBON 220.0K < SWITCH > S501 S503 1-571-478-11 SWITCH, SLIDE (P.SEL/ON,OFF) 1-692-431-21 SWITCH, TACTILE (RESET SW) < TUNER > TU1 1-693-440-21 TUNER UNIT < VIBRATOR > X1 X51 X501 X502 1-781-246-11 1-579-242-41 1-767-833-21 1-567-098-41 VIBRATOR, CRYSTAL (10.25 MHz) VIBRATOR, CRYSTAL (4.332 MHz) VIBRATOR, CERAMIC (3.68 MHz) VIBRATOR, CRYSTAL (32.768 KHz) PARTSFORINS TALLATION AND CONNECTIONS ************************************** 3-916-161-31 X-3370-077-1 3-386-828-01 3-349-410-01 3-388-078-01 FRAME ASSY SCREW ASSY (AE.KEY), FITTING SCREW, FITTING BUSHING KEY #6 #7 7-624-104-04 STOP RING 2.0, TYPE -E 7-627-553-17 PRECISION SCREW +P 2X2 TYPE 3 #1 #2 #3 #4 #5 7-621-772-10 7-685-793-09 7-685-792-09 7-685-795-09 7-685-106-19 ************* HARDWARE LIST ************* SCREW +B 2X4 SCREW +PTT 2.6X8 (S) SCREW +PTT 2.6X6 (S) SCREW +PTT 2.6X12 (S) SCREW +P 2X10 TYPE2 NON-SLIT Remark Ref. No. Part No. Description Remark
**************************************************************
************************************************************** MISCELLANEOUS ************* CORD (WITH CONNECTOR)(ATT) CORD (WITH CONNECTOR)(ISO-P&S) CONDUCTIVE BOARD, CONNECTION ADAPTER, ANTENNA CORD (WITH CONNECTOR)(XR-5890R) CORD (WITH CONNECTOR)(ISO-P&S) FUSE (BLADE TYPE) (AUTO FUSE)(10A) HEAD, MAGNETIC (PLAYBACK) DISPLAY PANEL, LIQUID CRYSTAL MOTOR ASSY, MAIN (CAPSTAN/REEL)
1-465-459-21 ADAPTER, ANTENNA 1-777-989-31 CORD (WITH CONNECTOR)(ATT)(XR-5890R) 1-782-381-11 CORD (WITH CONNECTOR)(ISO-P&S)

F781 HP901 LCD901 M901

1-777-989-31 1-782-381-11 1-694-508-11 1-465-459-21 1-777-989-31 1-782-381-11 1-532-877-11 1-500-196-21 1-803-497-11 A-3291-665-A
************************************************************** ACCESSORIES & PACKING MATERIALS ******************************* 3-865-670-11 MANUAL, INSTRUCTION (ENGLISH,SPANISH,SWEDISH,PORTUGUESE)(UK) 3-865-670-21 MANUAL, INSTRUCTION (FRENCH,GERMAN,DUTCH,ITALIAN)(AEP) 3-865-670-31 MANUAL, INSTRUCTION (GERMAN,RUSSIAN)(G) 3-865-670-41 MANUAL, INSTRUCTION (ENGLISH,GREEK,CZECH,POLISH,TURKISM)(SE) 3-865-671-11 MANUAL, INSTRUCTION (ENGLISH,SPANISH,SWEDISH,PORTUGUESE)(UK) 3-865-671-21 MANUAL, INSTRUCTION (FRENCH,DUTCH,ITALIAN,RUSSIAN,GERMAN)(AEP,G) 3-865-671-31 MANUAL, INSTRUCTION (ENGLISH,CZECH,POLISH,TURKISH,GREEK)(SE) X-3373-412-1 CASE (PANEL) ASSY **************************************************************

Sony Corporation

9-926-406-11
Personal & Mobile Communication Company
99A097542-1 Printed in Hungary 1999. 1 Published by Quality Assurance Dept.

XR-4950X

SERVICE MANUAL

Ver 1.0 2001.04

AEP Model
Model Name Using Similar Mechanism Tape Transport Mechanism Type

NEW MG-25F-136

SPECIFICATIONS

Cassette player section

Tape track Wow and flutter Frequency response Signal-to-noise ratio 4-track 2-channel stereo 0.08 % (WRMS) 30 18,000 Hz 58 dB

General

Outputs Audio output Power aerial relay control lead Power amplifier control lead Telephone ATT control lead Bass 9 dB at 100 Hz Treble 9 dB at 10 kHz 12 V DC car battery (negative earth) Approx. 183 mm (w/h/d) Approx. 162 mm (w/h/d) Approx. 1.2 kg Parts for installation and connections (1 set) Front panel case (1)

Tuner section

Tuning range Aerial terminal Intermediate frequency Usable sensitivity Selectivity Signal-to-noise ratio 87.5 108.0 MHz External aerial connector 10.7 MHz/450kHz 8 dBf 75 dB at 400 kHz 66 dB (stereo), 72 dB (mono) Harmonic distortion at 1 kHz 0.6 % (stereo), 0.3 % (mono) Separation 35 dB at 1 kHz Frequency response 30 15,000 Hz
Tone controls Power requirements Dimensions Mounting dimensions Mass Supplied accessories
Tuning range Aerial terminal Intermediate frequency Sensitivity 531 1,602 kHz External aerial connector 10.7 MHz/450 kHz 30 V
Design and specifications are subject to change without notice.

Power amplifier section

Outputs Speaker outputs (sure seal connectors) Speaker impedance ohms Maximum power output 50 W 4 (at 4 ohms)
FM/AM CASSETTE CAR STEREO

9-873-510-11

2001D0500-1 C 2001.4

Sony Corporation

e Vehicle Company Shinagawa Tec Service Manual Production Group
SCHEMATIC DIAGRAM MAIN Board (1/2)
See page 15 for Waveforms.
See page 21 for IC Block Diagrams.

(Page 19)

SCHEMATIC DIAGRAM MAIN Board (2/2)

(Page 18)

(Page 20)
6-5. PRINTED WIRING BOARD SUB Board 6-6. SCHEMATIC DIAGRAM SUB Board

LED801

K1 S2 K2

LSW801

A1 S1 A2

(Page 23)

(Page 17)

(Page 22)

IC Block Diagrams MAIN Board IC331 TDA7402TR
OUTSWR OUTSWL OUTSSL OUTSSR ACINLR ACINRF ACINRR OUTRR OUTLR OUTRF OUTLF

CXA2509AQ-T4

LINEOUT2 TAPEIN2

LB1930M-TLM

PBOUT2

AUXIN2

29 MIXER

VCC 1 NC 2 ININ2 4

10 NC BUFFER CONTROL CIRCUIT BUFFER MOTOR DRIVE CIRCUIT 9 OUTNC 7 OUTP-GND

21 24dB

120/70
MONO- MONOFADER FADER ACINLF 34 SWINR 35 SWINL 36 ACOUTR 37 ACOUTL 38 CREF 39 FRONT ACIN OUTPUT SELECTOR MAIN SECOND REAR SW MONO- MONOFADER FADER MONO- MONOFADER FADER

+ 20 MSMODE NR BIAS

S-GND 5

MS MODE

SUBWOOFER +PHASE CONTROL

PBFBPBRINPBREFPBFINF2

X1 TAPE/AUX TAPE EQ FWD/RVS
19 DRSW 18 TAPESW 17 INSW 16 NC

VCT 35 PBGND 36

LP VOICE BANDPASS HP 22 VDD

IIC-BUS

VCT + LPF

VCC + F3 X1

MS ON/ 15 NC OFF DETECT 14 MSOUT

21 SCL 20 SDA

PBFINPBREFPBRINPBFBT1 + F1

13 DGND

BASS SUPPLY TREBLE

DIGITAL CONTROL

12 MSTC + 120/70 24dB 6

19 GND 18 SM

11 G1FB

HIGH-CUT

VOLUME

S&H

PULSE FORMER QUAL 17 QUAL

PBOUT1

TAPEIN1 AUXIN1

LINEOUT1

SOFTMUTE COMPANDER LOUDNESS LOUDNESS

25kHz LP

MUX 40

IN-GAIN +AUTO ZERO

IN-GAIN BEEP MUTE
DEMODULATOR +STEREO ADJUST +STEREO BLAND

MULTIPATH DETECTOR

16 MPOUT 15 MPIN
PILOT CANCELATION PIL DET

D/A CONVERTER

14 LEVEL

BA4908-V3

MAIN SOURCE SELECTOR MDMD1G 42 MDMD2G 44 MAIN

MIXING SELECTOR

SECOND SOURCE SELECTOR PLL 80kHz LP
INPUT MULTIPLEXER PHONO MAIN 1 2

SEL SER

13 MPX

REGULATOR

FM AUX AM 11

FD1L+ FD1L FD1R+ FD1R

AM/FM NOISE BLANKER

12 AMIF

FD2L+ FD2L FD2R+ FD2R
OVER VOLTAGE PROTECT + 11

TUNER8.7V

TUNER8.7 ANT SW TUNER5.6 SW STB

VDD5.6V

COM8.7V

TUNER5.6V

SCHEMATIC DIAGRAM KEY Board
See page 15 for Waveform.
6-9. IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC501 MN101C49KTA2 (SYSTEM CONTROLLER) Pin No. Pin Name VREF VSM FMAGC KEYIN1 I/O I I I I Description Reference voltage (0V) input terminal (for A/D converter) FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1) (A/D input) FM AGC level detection signal input from the FM/AM tuner unit (TU1) (A/D input) Key input terminal (A/D input) (LSW801, LSW909, LSW912 to LSW917) Z, D-BASS, 6, 5, 4, 3, 2, REP 1 keys input Key input terminal (A/D input) (LSW901 to LSW907, S901 to S904) OFF, SOURCE, SOUND, MENU, MODE o, ENTER, SEEK/AMS . m,PRST +, SEEK/AMS + > M, PRST keys input Destination setting terminal (fixed at H in this set) Rotary remote commander key input terminal (A/D input) Noise level detection signal input at SEEK mode (A/D input) Not used (open) Reference voltage (+5V) input terminal (for A/D converter) Power supply terminal (+5V) (for A/D converter) Main system clock output terminal (18.432 MHz) Main system clock input terminal (18.432 MHz) Ground terminal (for A/D converter) Sub system clock input terminal (32.768 kHz) Sub system clock output terminal (32.768 kHz) Not used (fixed at L) Front panel block remove/attach detection signal input L: front panel is attached, H: front panel is removed Bus on/off control signal output terminal Reset signal output terminal L: reset L: bus on Not used (fixed at H) 55 H active 56 DOLON I/O TAPATT O Not used (fixed at H) 54 MTLON I/O 53 NROUT O 52 AMSON O 51 AMPATT ATT TU ATT O O O Not used (open) Pin No. 48 Pin Name ACC IN TESTIN TELATT UNICLI UNISO UNISI UNICKO I2C SIO VOLATT I2C CKO AMPON I/O I I I I O I O I/O O O O Description Accessory detection signal input L: accessory on Setting terminal for the test mode H: test mode, Normally: fixed at L Telephone muting signal input terminal At input of H, the signal is attenuated by 20 dB Serial data transfer clock signal input terminal Not used (fixed at L) Serial data output terminal Not used (fixed at L) Serial data input terminal Not used (fixed at L) Serial data transfer clock signal output terminal Not used (fixed at L) Two-way data bus with the electrical volume (IC331) and FM/AM tuner unit (TU1) Muting on/off control signal output to the electrical volume (IC331) L: muting on Clock signal output to the electrical volume (IC331) and FM/AM tuner unit (TU1) Standby on/off control signal output to the power amplifier (IC751) L: standby mode, H: amplifier on Muting on/off control signal output to the power amplifier (IC751) L: muting on Audio line muting on/off control signal output H: muting on Muting on/off control signal output of the FM and AM tuner signal H: muting on Not used (open) Tape auto music sensor control signal output to the CXA2509AQ (IC301) L is output to lower the gain for audio level at FF/REW mode Forward/reverse direction control signal output to the CXA2509AQ (IC301) L: forward direction, H: reverse direction METAL control in/out terminal At initial mode: auto/manual mode selection input of METAL function (manual at L input) At manual mode: METAL on/off control signal output terminal (METAL on at H output) At auto mode: input at MTLIN (pin es) Tape muting on/off control signal output to the CXA2509AQ (IC301) H: muting on Active at ATA, FF/REW mode Dolby control in/out terminal At initial mode: valid/invalid selection input of dolby function (valid at L input) At normal mode: dolby on/off control signal output terminal (dolby on at H output) Not used this function (fixed at H) Whether a music is present or not from CXA2509AQ (IC301) is detected at auto music sensor L: music is present, H: music is not present 4VPREOUT model setting terminal L: 4VPREOUT model Fixed at H in this set Not used (open) Two-way data bus with the FM/AM tuner unit (TU1) Clock signal output to the FM/AM tuner unit (TU1) Not used (open) AM filter control signal output to the FM/AM tuner unit (TU1) L: SW mode Front panel open/close detection signal input L is input when the front panel is closed LED drive signal output of the tape window and Z indicator (LED801, LSW801) H: LED on H is output to turn on LED when front panel is opened Dial pulse input of the rotary encoder (RE901) (for volume control) A/D converter power control signal output When the KEYACK (pin wh) that controls reference voltage power for key A/D conversion input is active, L is output from this terminal to enable the input Power on/off control signal output of the illumination LED and liquid crystal display driver (IC901) H: power on

KEYIN0 DSTSEL RCIN0 QUALITY VREF VDD OSCOUT OSCIN VSS XIN XOUT MMOD NOSESW BUSON SYSRST LCDSO LCDCE LCDCKO RCIN1 RAMBU
I I I I O I O I I O I I O O O O O I I
Serial data output to the liquid crystal display driver (IC901) Chip enable signal output to the liquid crystal display driver (IC901) Rotary remote commander shift key input terminal L: shift 59 to 75 L is input at low voltage 78 H: auto metal Not used (fixed at L) DOORIND REIN1 REIN0 AD ON O I I O Not used (fixed at L) AMSIN 4VPRE E2P SIO E2P CKO SWSHIFT DOORSW I I O I/O O O O I Serial data transfer clock signal output to the liquid crystal display driver (IC901) Internal RAM reset detection signal input terminal Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 50 msec after reset Not used (fixed at L) Input of acknowledge signal for the key entry Acknowledge signal is input to accept function and eject keys in the power off status On at input of H Not used (open) Battery detect signal input from the battery detect circuit Sircs remote control signal input terminal Not used (open) Auto metal detection signal input terminal System reset signal input from the reset signal generator (IC551) and reset switch (S551) L: reset L is input for several 100 msec after power on, then it changes to H Tuner system power supply on/off control signal output to the BA4908 (IC611) H: tuner power on Beep sound drive signal output to the power amplifier (IC751) Main system power supply on/off control signal output to the BA4908 (IC611) H: power on Setting terminal for the illumination color L: amber, H: green Fixed at L in this set 83 ILLON O

30, 37

KEYACK BUIN SIRCS MTLIN RESET TUNON BEEP PW ON COLSEL

I O I I O I I O O O I

Pin No. 92 93, to 99 100
Pin Name REL POS3 POS2 POS0 POS1 LMLOD LMEJ TAPON CMON DAVSS NS MASK DAVDD
I/O I I I I I O O O O O O O
Description Rotation detection signal input from supply reel sensor and take-up reel sensor on the deck mechanism Tape position (EJECT/FF/REW/ REV/FWD mode) detection signal input from the tape operation switch on the deck mechanism POS0: L: EJECT mode, H: others mode POS1: L: FF and FWD mode, H: others mode POS2: L: REW mode, H: others mode POS3: L: REV and EJECT mode, H: others mode
Motor drive signal output to the loading/tape operation motor driver (IC351) H active (For the loading direction and forward side operation) *1 Motor drive signal output to the loading/tape operation motor driver (IC351) H active (For the eject direction and reverse side operation) *1 Tape system power supply on/off control signal output H: tape on Capstan/reel motor (M901) drive signal output H: motor on Not used (open) Ground terminal (for D/A converter) Not used (open) Discharge control signal output terminal H: discharge Not used (open) Not used (open) Power supply terminal (+5V) (for D/A converter) Not used (open)

*1 Loading/tape operation motor control Mode Terminal LMLOD (pin il) LMEJ (pin o;) STOP L L LOADING/ FORWARD H L EJECT/ REVERSE L H BRAKE H H