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XR-C5110R/C5120R

SERVICE MANUAL

AEP Model UK Model

Photo: XR-C5120R
Model Name Using Similar Mechanism Tape Transport Mechanism Type

XR-C5100R MG-25Y-136

SPECIFICATIONS
FM/MW/LW CASSETTE CAR STEREO

MICROFILM

6-7. SCHEMATIC DIAGRAM MAIN Section (1/2)
See page 26 for Waveforms. See page 39 for IC Block Diagrams.
6-8. SCHEMATIC DIAGRAM MAIN Section (2/2) See page 26 for Waveforms. See page 40 for IC Block Diagrams.

(Page 37)

6-10. SCHEMATIC DIAGRAM PANEL Section See page 26 for Waveforms.

(Page 34)

LINEOUT2

TAPEIN2

PBOUT2
IC Block Diagrams MAIN Board IC1 TB2118F (EL)
AM CP OUT FM CP OUT A-GND D-GND

CXA2509AQ-T4

AUXIN2 PBEQ2 MSSW DIREF GND

LB1638M

10 N.C.

AM IN FM IN VDD

21 24dB
INCONTROL LOGIC 9 OUTVCC 7 OUT2

120/70 T2 + +

17 AMP
20 MSMODE NR BIAS X1 TAPE/AUX MS MODE
VCC 4BIT SWALLOW COUNTER SEEK/RECP PRESCALLER 12BIT PROGRAMMABLE COUNTER + + REGULATOR SEEK/RECP

VDD AMP

PBFBPBRINPBREFPBFINF2

19 DRSW

TAPE EQ FWD/RVS

18 TAPESW 17 INSW 16 NC

6 N.C.

VCT 35 PBGND 36

VCT + LPF

VCC + F3 X1

PHASE COMPARATOR
MS ON/ 15 NC OFF DETECT 14 MSOUT
20BIT IF COUNTER 40BIT SHIFT REGISTER 18BIT 22BIT
PBFINPBREFPBRINPBFBT1 120/70 + + F1

13 DGND

OSCILLATOR

REFERENCE DIVIDER

12 MSTC 11 G1FB

ON/OFF BUFFER

24dB 6

PBOUT1

TAPEIN1 AUXIN1

CE DIN CK DOUT

TDA7462D

LINEOUT1

SERIAL INTERFACE

I/O PORT

OUTPUT PORT

SAA6588T-118

SCOUT VSSA MPX MAD PSWN VDDA VREF CIN AFIN

13 PAUSE DETECTOR

PAUSE DETECT INPUT GAIN & AUTO ZERO TREBLE/ BASS CONTROL CIRCUIT FRONT FADER
SE3L SE3R MUTE SDA SCL PAUSE
57kHz 8th ORDER BAND-PASS FILTER SIGNAL QUALITY DECODER 4 CLOCK CLOCK INTERFACE REGISTER DATA DATA

CLOCKED COMPARATOR

RDS/RDBS DEMODULATOR

RDS/RDBS DECODER

TEST CONTROL

OSCILLATOR & CLOCK

IIC BUS SLAVE TRANSCEIVER
SE1L SE1R MD+ MD CDL+ CDL CDR CDR+ PDR PDGND PDL SE2L SE2R

FRONT SIDE SELECTOR

MULTI PATH DETECTOR

POWER SUPPLY & RESET

LOUDNESS CONTROL CIRCUIT

VOLUME CONTROL CIRCUIT

SOFT MUTE

VOICE BANDPASS HP LP

22 OUT FL
INPUT MULTIPLEXER & MIXING STAGE
FRONT FADER COMPANDER REAR FADER LOUDNESS CONTROL CIRCUIT

21 OUT FR

REAR SIDE SELECTOR

20 OUT RL

INPUT GAIN

REAR FADER

19 OUT RR

MRO MPTH

3 TCON

4 OSCO

5 OSCI

6 VSSD

7 VDDD

8 DAVN

10 SCL

SUBWOOFER LP

FADER 18 SUBOUT+ 17 SUBOUT SDA

SUBWOOFER OUT IIC BUS

DIGITAL CONTROL CIRCUIT

SCL 16 VDD 15 GND

CREF 14

POWER SUPPLY

BA3918-V3

BUS ON 1

BA8270F-E2
BUS ON SWITCH RESET SWITCH BATTERY SWITCH 14 VCC

REGULATOR

BATT 3

RST BUS ON CLK IN BU IN

OVER VOLTAGE PROTECT + 11 FM 12 GND + 10 AM + 5 VDD 6 AMP 7 VCC 8 ANT 9 COM + 1 NC 4 MODE2 MODE1 STB
CLK 4 VREF 5 DATA 6 GND 7

9 DATA IN 8 DATA OUT

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IC PIN FUNCTION DESCRIPTION
Pin Name I/O Function Seek control signal output to the FM/AM tuner unit (TU1) AM mode: Used for IF count output/SD output request/AGC cut at SEEK or BTM FM mode: Used for SD speed up at SEEK, BTM, or AF L is output at tuner off PLL low-pass filter time constant selection signal output at AF SEEK H is output when AF SEEK Not used (open) Not used (open) FM stereo broadcasting detection signal input from the FM/AM tuner unit (TU1), or forced monaural control signal output to the FM/AM tuner unit (TU1) L is input in the FM stereo mode, or L is output in the forced monaural mode Muting on/off control signal output of the FM and AM tuner signal H: muting on FM system power supply on/off control signal output to the BA3918 (IC671) L: AM power on, H: FM power on Tuner system power supply on/off control signal output to the BA3918 (IC671) H: tuner power on Power supply terminal (+5V) Not used (open) Bus on/off control signal output to the SONY bus interface (IC701) L: bus on Reset signal output to the SONY bus interface (IC701) L: reset Front panel open/close detection signal input L is input when the front panel is closed Serial data output to the liquid crystal display driver (IC901) Serial data transfer clock signal output to the liquid crystal display driver (IC901) Beep sound drive signal output terminal Chip enable signal output to the liquid crystal display driver (IC901) H active Serial data input from the SONY bus interface (IC701) Serial data output to the SONY bus interface (IC701) Serial data transfer clock signal output to the SONY bus interface (IC701) Station detector detect input from the FM/AM tuner unit (TU1) Stop level for SEEK, BTM, etc. is determined SD is present at input of H Not used (open) Sircs remote control signal input terminal Not used (fixed at H) PLL serial data input from the FM/AM PLL (IC1) PLL serial data output to the FM/AM PLL (IC1) PLL serial data transfer clock signal output to the FM/AM PLL (IC1) PLL chip enable signal output to the FM/AM PLL (IC1) H active Power on/off control signal output of the illumination LED and liquid crystal display driver (IC901) H: power on Depends on initial setting of power select switch (S501) Power select switch (S501) on: H output at the accessory on Power select switch (S501) off: H output at the power on Not used (open) Discharge control signal output for the noise detection circuit H: discharge Ground terminal Connected to coupling capacitor for the power supply A/D converter power control signal output terminal When the KEYACK (pin &) that controls reference voltage power for key A/D conversion input is active, L is output from this terminal to enable the input Dial pulse input of the rotary encoder (RE900) (for VOLUME/BASS/TREBLE/BALANCE/FADER control)

MAIN BOARD IC501 MB90574PFV-G-196-BND (SYSTEM CONTROLLER) Pin No.

SEEKOUT

to 27 28
AF-SEEK NCO ST-MONO TUNMUTE FM-ON TU-ON VCC NCO BUS-ON SYSRST DOORSW LCD SO LCD CKO BEEP LCD CE UNISI UNISO UNICKO SD-IN NCO SIRCS PLLSI PLLSO PLLCKO PLLCE
O O I/O O O O O O O I O O O O I O O I O I I O O O

ILL-ON

30, 37
NCO NOISE ON VSS C AD-ON RE-IN0 RE-IN1

O O O I I

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Pin No. 40, 45 46

Pin Name DVCC DVSS NCO AVCC AVRH AVRL AVSS KEYIN0
I/O O I I I Ground terminal (for D/A converter) Not used (open)
Function Power supply terminal (+5V) (for D/A converter)
Power supply terminal (+5V) (for A/D converter) Reference voltage (+5V) input terminal (for A/D converter) Reference voltage (0V) input terminal (for A/D converter) Ground terminal (for A/D converter) Key input terminal (A/D input) (LSW901 to LSW903, S901, LSW905, LSW906) OFF, SOURCE, MODE *, SEEK/AMS = 0 + ) +, SOUND, SHIFT keys input Key input terminal (A/D input) (LSW921 to LSW923, LSW925 to LSW933) 6, PRESET DISC /+, AF/TA, PTY, DSPL, 6, 5, 4 n, 3 PLAY MODE, 2 SET UP, 1 N keys input Rotary remote commander key input terminal (A/D input) Destination setting terminal (AEP and UK models: fixed at L, German model: fixed at H) Noise level detection signal input at SEEK mode (A/D input) D-BASS switch (S981) input terminal (A/D input) Multi-path detection signal input from the RDS decoder (IC51) FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1) (A/D input) Power supply terminal (+5V) 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 100 msec after reset Fixed at H in this set Power select switch (S501) input terminal Not used (open) Setting terminal for the test mode L: test mode, Normally: fixed at H LED drive signal output of the door indicator H: LED on H is output to turn on LED when front panel is opened Not used (open) Muting control signal output to the electrical volume (IC401) Volume minimum: output (H active) Setting terminal for the illumination color L: 2 colors, H: 1 color (fixed at L in this set) Setting terminal for the illumination color Ground terminal Not used (open) Audio line muting on/off control signal output terminal Not used (open) Muting on/off control signal output to the power amplifier (IC611) L: muting on L: data write mode Internal flash memory data write mode detection signal input terminal Not used (fixed at H in this set) H: muting on L: amber, H: green (fixed at L in this set) L: off (halt mode), H: on (operation mode)

65 66, 75 76

KEYIN1 RC-IN0 DSTSEL NOISE DET D-BASS MTP VSM VCC RAMBU POWSEL NCO TESTIN DOOR-IND EVOL MUTE COLR SW COLR SEL VSS NCO MUTE NCO AMP MUTE FLASH-W I2C SIO I2C CKO RC-IN1 X1A X0A DAVN KEYACK
I I I I I I I I I O I O O I I O O O O I I/O O I O I I I
Two-way data bus with the RDS decoder (IC51) and electrical volume (IC401) Bus clock signal output to the RDS decoder (IC51) and electrical volume (IC401) Rotary remote commander shift key input terminal Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) Data transmit completed detect signal input from the RDS decoder (IC51) H active 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 L: shift
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Pin No. to 95 to 113 114

Pin Name BU-IN ILL IN TEL-ATT NOSESW ACC IN NCO HSTX MD2 MD1 MD0 RESET VSS X0 X1 VCC NCO 9K/10K NCO MTLIN AMSIN REEL POS0 POS1 POS2 POS3 LM-EJ LM-LOD CM-ON TAPEON N-ROUT AMSON
I/O I I I I I O I I I I I I O O I O I I I I I I I O O O O O O
Function Battery detect signal input from the SONY bus interface (IC701) and battery detect circuit L is input at low voltage Auto dimmer control illumination line detection signal input terminal L is input at dimmer detection Fixed at L in this set Telephone muting signal input terminal At input of H, the signal is attenuated by 20 dB Used for the XR-C5120R only Front panel block remove/attach detection signal input terminal L: front panel is attached Accessory detect signal input terminal L: accessory on Not used (open) Hardware standby input terminal L: hardware standby mode Reset signal input in this set Setting terminal for the CPU operational mode (fixed at L in this set) Setting terminal for the CPU operational mode (fixed at H in this set) Setting terminal for the CPU operational mode (fixed at H in this set) System reset signal input from the reset signal generator (IC652) and reset switch (S503) L: reset L is input for several 100 msec after power on, then it changes to H Ground terminal Main system clock input terminal (3.68 MHz) Main system clock output terminal (3.68 MHz) Power supply terminal (+5V) Not used (open) AM frequency step (9 kHz or 10 kHz) selection signal input terminal L: 9 kHz, H: 10 kHz Not used (open) Not used (open) Auto metal detection signal input terminal L: auto metal Fixed at L in this set 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 Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck mechanism Tape position (EJECT/FF/REW/ REV/FWD mode) detect 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 drive (IC361) H active (For the eject direction and reverse side operation) *1 Motor drive signal output to the loading/tape operation motor drive (IC361) H active (For the loading direction and forward side operation) *1 Capstan/reel motor (M901) drive signal output terminal H: motor on Tape system power supply on/off control signal output terminal H: tape on Forward/reverse direction control signal output to the CXA2509AQ (IC301) L: forward direction, H: reverse direction 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 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 `) Used for the XR-C5120R only 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)
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Pin No. 119 120

Pin Name TAPE MUTE AMP ON VSS POWON

I/O O O O

Function Tape muting on/off control signal output to the CXA2509AQ (IC301) H: muting on Active at ATA, FF/REW mode Standby on/off control signal output to the power amplifier (IC611) L: standby mode, H: amp on Ground terminal Main system power supply on/off control signal output to the BA3918 (IC671) H: power on
*1 Loading/tape operation motor control Mode Terminal LM-LOD (pin `) LM-EJ (pin `) STOP L L LOADING/ FORWARD H L EJECT/ REVERSE L H BRAKE H H
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