XR-C6100

SERVICE MANUAL

Saudi Arabia Model

Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism Tape Transport Mechanism Type

NEW MG-25F-136

SPECIFICATIONS

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FM/MW/SW CASSETTE CAR STEREO

MICROFILM

SECTION 6 DIAGRAMS
6-1. IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC501 PD78058GC-F58-3B9 (SYSTEM CONTROLLER) Pin No. Pin Name DSEL RC IN0 SD IN AVSS I/O I I I Function Destination setting terminal Frequency select switch (S502) input in this set L: MW 9k step or FM 50k step, H: MW 10k step or FM 200k step Rotary remote commander shift key A/D input terminal 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 Ground terminal (for A/D converter) Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced monaural control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input and forced monaural output) FM stereo detection at input of L, forced monaural at output of L PLL serial chip enable output to the FM/AM PLL (IC1) Reference voltage (+5V) input terminal (for D/A converter) 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) Polar stereo signal input terminal Not used (fixed at H) Serial data output to the liquid crystal display driver (IC901) Serial data transfer clock signal output to the liquid crystal display driver (IC901) Chip enable output to the liquid crystal display driver (IC901) Blank indicate control signal output to the liquid crystal display driver (IC901) L: no display Serial data input from the bus interface (IC701) (for SONY bus) Serial data output to the bus interface (IC701) (for SONY bus) Serial data reading clock signal input terminal (for SONY bus) Serial data transfer clock signal output to the bus interface (IC701) (for SONY bus) Bus on/off control signal output to the bus interface (IC701) (for SONY bus) L: bus on Reset signal output to the bus interface (IC701) (for SONY bus) L: reset Standby control signal output to the power amplifier (IC611) L: standby Muting control signal output to the power amplifier (IC611) L: muting on Tuner system power supply on/off control signal output to the BA3918 (IC671) H: tuner on FM system power supply on/off control signal output to the BA3918 (IC671) H: FM on Main system power supply on/off control signal output to the BA3918 (IC671) H: power on Input terminal to set whether the illumination color change function is present or not L: illumination color change function is present (fixed at L in this set) Tape auto music sensor control signal output to the CXA2510AQ (IC301) L is output to lower the gain for audio level at FF/REW Reel table rotation detect signal input from the take-up and supply reel sensor Input terminal to set whether the auto metal function is present or not L: auto metal function is present Not used this function in this set (fixed at H) Tape position detect input from the tape operation switch on the mechanism block Ground terminal Tape position detect input from the tape operation switch on the mechanism block Loading/tape operation motor control signal output to the LB1638M (IC361) (For the loading direction and forward side operation) *1
PLLCE AVREF1 PLLSI PLLSO PLLCKO P-STIN LCDSO LCDCKO LCDCE LCDINH UNISI UNISO UNICKI UNICKO BUSON SYSRST AMPON AMP MUT TUNON FM ON PW ON COLOR AMSON REL MTLIN POS3 POS2 GND POS0 POS1 LM LOD
O I I O O I O O O O I O I O O O O O O O O I O I I I I I I O

Pin No. 43 44

Pin Name LM EJ N/R OUT P.ON CM ON TAPEON COLSEL RC IN1 TEST

I/O O O O O O I I I

Function Loading/tape operation motor control signal output to the LB1638M (IC361) (For the eject direction and reverse side operation) *1 Forward/reverse direction control signal output to the CXA2510AQ (IC301) L: forward direction, H: reverse direction Polar stereo detection signal output terminal H: polar stereo Not used (open) Capstan/reel motor (M901) drive signal output terminal H: motor on Tape system power supply on/off control signal output terminal H: tape on Setting terminal for the illumination color L: amber, H: green (fixed at H) Rotary remote commander shift key A/D input terminal Setting terminal for the test mode L: test mode (normally fixed at H) Power supply on/off control signal output terminal at the illumination and liquid crystal display driver (IC901) H: power on At power select switch (S501) on mode: H output at the accessory on At power select switch (S501) off mode: H output at the power on Beep sound signal output terminal Line muting control signal output terminal H: line muting on Chip enable signal output to the electrical volume (IC161) Chip enable signal output terminal Not used in this set (open) Serial data transfer clock signal output to the electrical volume (IC161) Serial data transfer clock signal output terminal Not used in this set (open) Serial data output to the electrical volume (IC161) Tape muting on/off control signal output to the CXA2510AQ (IC301) H: tape muting on Dolby control in/out terminal At initial mode: valid/invalid selection input of dolby function (L input: valid) At normal mode: dolby on/off control signal output to the CXA2510AQ (IC301) H: dolby on Dolby B/C selection control in/out terminal At initial mode: dolby B only/dolby B and C type selection input (L input: dolby B and C) At normal mode: dolby type selection signal output L: dolby B, H: dolby C Not used this function (fixed at H) Whether a music is present or not from CXA2510AQ (IC301) is detected at auto music sensor L: music is present, H: music is not present METAL control in/out terminal At initial mode: auto/manual mode selection input of METAL function L: manual mode At manual mode: METAL on/off control signal output to the CXA2510AQ (IC301) H: METAL on At auto mode: input at MTLIN (pin #) Power supply on/off control signal output for the A/D converter L: power on Internal RAM reset detection signal input from the RN5VD23AA (IC651) Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 100 msec after reset System reset signal input from the reset signal generator (IC652) and reset switch (S503) L is input for several 100 msec after power on, then it changes to H Sircs signal input from the remote control receiver (IC902) Battery detect signal input terminal H: battery on Power select switch (S501) input terminal L: off (halt mode), H: on (operation mode) Accessory detect signal input terminal L: accessory on Detects the removal of the attaching and removing type front panel block L: attaching Telephone muting signal input terminal At input of L, the signal is attenuated by 20 dB

ILL ON

BEEP MUT VOLCE SUBCE VOLCKO SUBCKO VOLSO TAPMUT

O O O O O O O O

MTLSEL

AD ON RAMBU

RESET SIRCS BU IN PW SEL ACCIN NOSESW TELMUT

I I I I I I I

Pin No. 75 76
Pin Name KEYACK VDD X OUT X IN GND XT OUT XT IN AVDD AVREF0 KEYIN0

I/O I O I O I I I

Function 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 Power supply terminal (+5V) Main system clock output terminal (5 MHz) Main system clock input terminal (5 MHz) Ground terminal Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) Power supply terminal (+5V) (for A/D converter) Reference voltage input terminal (+5V) (for A/D converter) Key input terminal (A/D input) OFF, SOURCE, MODE *, SEEK AMS + + ), SEEK AMS = 0 , VOLUME , SEL, VOLUME +, DSPL, ATT keys input (LSW901 to LSW910) Key input terminal (A/D input) 6, INTRO 1, REPEAT 2, SHUF/a 3, BL SKIP 6, ATA 5, BANK/MTL 4, BTM LCL, FILE, PRESET DISC +/ keys input (LSW921 to LSW931) D-BASS switch (SW951) input (A/D input) FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1) Setting terminal for the key (fixed at L)

KEYIN1 D-BASS VSM KEYSEL

I I I I
*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
6-4. SCHEMATIC DIAGRAM MAIN Section (1/2) See page 31 and 32 for IC Block Diagrams.
6-5. SCHEMATIC DIAGRAM MAIN Section (2/2) See page 32 for IC Block Diagramas.

Waveforms

1 IC(XO)

4.2 Vp-p

7.2 MHz

2 IC501 ^ (XOUT)

4.6 Vp-p

3 IC501 & (XT_OUT)

5 Vp-p

32.768 kHz

6-7. SCHEMATIC DIAGRAM PANEL Section
IC Block Diagrams MAIN BOARD IC1 BU2624F-E2 IC301 CXA2510AQ-T4
LINEOUT1 TAPEIN1 PBOUT1 AUXIN1 PBEQ1 MSSW

REFERENCE DIVIDER

PHASE DETECT

19 PD1

18 VDD

+ NR BIAS

120/ 70

XOUT 1

20 VSS

I/O CONTROL

20 MSMODE X1 TAPE/AUX MS MODE 19 DRSW 18 TAPESW 17 INSW NR MODE 16 NRSW

CE 3 CK 4 DA 5 CD 6

PBFBPBRIN1 32

17 FMIN

PBREFPBFIN1 34

F2 TAPE EQ FWD/RVS

MAIN COUNT

16 AMIN

VCT 35 PBGND 36

VCT + LPF

VCC + F3 X1

SHIFT REGISTER LATCH

MS ON/ 15 NC OFF DETECT 14 MSOUT

PRESCALLER 15 P2

PBFINPBREFPBRINPBFBT1

13 IF2

P14 IF1

13 DGND

20BIT COUNT

120/ 70 1

PBOUT2

TAPEIN2 AUXIN2

12 SD 11 PD2

IC361 IC161 LC75373ED

LTOUT LSIN LS1 LVRIN LCOM LSOUT LS2 LS3 LT1 LT2 LT3 GND 1

LB1638M

10 N.C.

LINEOUT2

TCH2 NC PLAY

CONTROL LOGIC

9 OUTVS 7 OUT2
OUT1 GND OUT1+ SVR IN1 IN2 S-GND IN4 IN3 AC-GND OUT3+ GND OUT3

TAB GND OUT2 STNBY OUT2+

21 LFOUT

1 RVRIN

2 RCOM

RT1 RT2

8 RTOUT RSIN RS1

RS2 RS3

11 RSOUT

MODE2 MODE1 STB

R1 R2 R3 R4 RSELO

VDD 39

LSELO L4 L3 L2 L1

GND 5 + 20 LROUT

6 N.C.
19 VREF DECODER LATCH SHIFT REGISTER CONTROL CE DI CL VSS 14 RROUT

BA3918-V2

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

BUS ON 1

REGULATOR

13 RFOUT 12 RFIN

OUT4+ MUTE OUT4 GND N.C.
RST BUS ON CLK IN BU IN 9 DATA IN 8 DATA OUT

BATT 3

OVER VOLTAGE PROTECT
CLK 4 VREF 5 DATA 6 GND 7

22 LFIN

VCC 3 IN2 4

+ OFF/B NR 10

IF COUNT CONTROL

12 MSTC 11 FF

TDA7384

DRIVER