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XR-C8220
SERVICE MANUAL
US Model E Model
For RM-X4S (Remote Commander), please refer to RM-X4S Service Manual (9-925-698-) previously issued.
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
XR-C9100 MG-25D-136
SPECIFICATIONS
FM/AM CASSETTE CAR STEREO
MICROFILM
XR-C8220
6-8.
SCHEMATIC DIAGRAM MAIN Section (1/4) · See page 28 for Waveforms.
· See page 47 for IC Block Diagrams.
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XR-C8220
6-9. SCHEMATIC DIAGRAM MAIN Section (2/4) · See page 48 for IC Block Diagrams.
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XR-C8220
6-10.
SCHEMATIC DIAGRAM MAIN Section (3/4) · See page 28 for Waveforms.
· See page 47 for IC Block Diagrams.
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XR-C8220
6-11.
SCHEMATIC DIAGRAM MAIN Section (4/4) · See page 49 for IC Block Diagrams.
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XR-C8220
6-13.
SCHEMATIC DIAGRAM PANEL Section
· See page 28 for Waveforms.
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XR-C8220
6-14.
PRINTED WIRING BOARD SUB/INVERTER Section
6-15.
SCHEMATIC DIAGRAM SUB/INVERTER Section
· See page 28 for Waveform.
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· IC Block Diagrams MAIN Board IC10 BU2624FV-E2
20 XOUT 19 VSS
IC201
GND 1
LB1638M
10 N.C.
IN1 2
CONTROL LOGIC
PHASE DET XIN 1 REFERENCE DIVIDER MAIN COUNT CE CK DA CD 2 4 5 6 IF COUNT CTL P0 7 I/O CTL SHIFT REGISTER LATCH PRESCALER
18 PD 17 VDD 16 FMIN
9 OUT1 8 VS 7 OUT2
VCC 3 IN2 4
15 AMIN
GND 5
6 N.C.
14 P2
P1
9
20BIT COUNT
13 IFIN
P3 10
12 SD 11 P4
IC250
CXA2510AQ-T4
LINEOUT1 TAPEIN1 PBOUT1 AUXIN1 PBEQ1 MSSW DIREF TCH1 NR T2 + + NR BIAS X1 TAPE/AUX F2 TAPE EQ FWD/RVS NR MODE OFF/B GND NC
30
29
28 27
26
25
24
23 22 21
120µ/ 70µ
20 MSMODE MS MODE 19 DRSW 18 TAPESW 17 INSW 16 NRSW
PBFB1 31 PBRIN1 32 PBREF1 33 PBFIN1 34
VCT 35 PBGND 36
VCT + LPF
VCC + F3 X1
MS ON/ 15 NC OFF DETECT 14 MSOUT
PBFIN2 37 PBREF2 38 PBRIN2 39 PBFB2 40 T1 120µ/ 70µ 1 PBEQ2 2 PBOUT2 3 VCC 4 5 TAPEIN2 AUXIN2 6 MSLPF 7 LINEOUT2 + + OFF/B NR 8 9 10 TCH2 NC PLAY F1
13 DGND
12 MSTC 11 FF
47
IC301
CXA1946BQ-T6
GAIN134 TIN1 TCLC1 TCLC11 TCLC12 TCO1 LDHC1 VOUT1 LDLC1 INAO1 VRIN1 FDIN1
36
35 34
33
32
31
30 29 28 27 26
25
LOUD GAIN12 GAIN11 IN14 IN13 IN12 IN11 37 38 39 40 41 42
VOLUME 8dB STEP
VOLUME 1dB STEP VCTBUFF
TONE
FADER
24 FNTO1 23 REO1
INPUT SW
VCTBUFF VCTBUFF
LATCH
LATCH CONTROL
ZCDET 45k SHIFT REGISTER 45k IN21 IN22 IN23 IN24 GAIN21 GAIN22 43 44 45 46 47 48 VCTBUFF
INPUT SW
22 21 20 19
CE CLK DGND GND
VCTBUFF VCTBUFF LOUD VOLUME 8dB STEP VOLUME 1dB STEP TONE FADER
18 17 16 15
VCC VCT DATA TIMER
14 REO2 13 FNTO2
1
GAIN234
2
LDLC2
3
LDHC2
4
INAO2
5
VRIN2
6
VOUT2
7 8 9 10 11
TIN2 TCLC2 TCLC21 TCLC22 TCO2
12
FDIN2
IC310, 410
VCCL 1 INL 2 SVRL 3
TDA8574 (T)
IC350
INP 1
CXA1846BN-T4
INAO 1 VRIN 1 VCT 1 INN 1 OUT 1 GND N.C. VCC VCT
20
19
18
17
16
15
14
13
12
11
BUFFER
VCCL
16 CL+ 15 CL
+ 8dB STEP VOLUME 1dB STEP VOLUME
BUFFER
LIFT AMP
REFERENCE
VCCL SIGNAL AMP
LATCH
14 LGND 13 OUTL
SHIFT REGISTER
LATCH CONTROL
ZC DET
VCT BUFFER
INML 4 VCCR INMR 5 SIGNAL AMP REFERENCE VCCR LIFT AMP
12 OUTR 11 RGND
+
8dB STEP VOLUME
1dB STEP VOLUME
1
INP 2
2
INN 2
3
VCT 2
4
INAO 2
5
VRIN 2
6
OUT 2
7
CE
8
DATA
9
CLK
10
INIT
BUFFER SVRR 6 INR 7 VCCR 8 BUFFER
10 CR 9 CR+
48
IC502
BA3918-V3
IC602
BUS ON 1
BA8270F-E2
BUS ON SWITCH RESET SWITCH BATTERY SWITCH 14 VCC
REGULATOR
RST 2
BATT 3
13 12 11 10
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 2 3 4 MODE2 MODE1 STB
CLK 4 VREF 5 DATA 6 GND 7
9 DATA IN 8 DATA OUT
IC650 IC650
MSM6656A-687GS-KR1 (US model) MSM6656A-689GS-KR1 (E model)
24 23 22 21 20 OSC TIMMING CONTROLLER BEEP TONE GENARATOR LPF GND AOUT NAR NC BUSY
VDD 1 XT XT NC CMD NC 2 3 4 5 6 NC 7 ST 8
19 NC 18 NC 17 RESET
I/O INTERFACE
MELODY GENARATOR
12 BIT DAC 12 PCM SYNTHSIZER
17 BIT ADDRESS COUNTER
DATA CONTROLLER
ADPCM SYNTHESIZER
17 BIT MULTIPLEXER 7 10 11 12/PoRT0 13/PoRT1 9 10 11 12 ADDRESS & COMMAND CONTROLLER
1M BIT ROM EDITING ROM & ADDRESS ROM CONTAINS 22KBIT
8
16 15 14 13
CH 16/SD 15/SI 14
49
6-16.
IC PIN FUNCTION DESCRIPTION
· MAIN BOARD IC600 MB90574PFV-G-182-BND (SYSTEM CONTROLLER) Pin No. Pin Name I/O Function Seek control signal output to the FM/AM tuner unit (TUX10) 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) IF band select signal output to the FM/AM tuner unit (TUX10) "H": wide mode In receiving FM signals, interference noise from adjacent stations is removed by narrowing the IF band automatically in the tuner unit so as to raise the selectivity, but in this case, the distortion may increase and accordingly, the IF band is widened forcibly FM stereo broadcasting detection signal input from the FM/AM tuner unit (TUX10), or forced monaural control signal output to the FM/AM tuner unit (TUX10) "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 (IC502) "L": AM power on, "H": FM power on Tuner system power supply on/off control signal output to the BA3918 (IC502) "H": tuner power on Power supply terminal (+5V) Reset signal output to the CSV (IC650) "L": reset Bus on/off control signal output to the SONY bus interface (IC602) "L": bus on Reset signal output to the SONY bus interface (IC602) "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 (IC900) Serial data transfer clock signal output to the liquid crystal display driver (IC900) Beep sound drive signal output terminal Chip enable signal output to the liquid crystal display driver (IC900) "H" active Serial data input from the SONY bus interface (IC602) Serial data output to the SONY bus interface (IC602) Serial data transfer clock signal output to the SONY bus interface (IC602) Station detector detect input from the FM/AM tuner unit (TUX10) Stop level for SEEK, BTM, etc. is determined SD is present at input of "H" Serial data output to the CSV (IC650) Serial data transfer clock signal output to the CSV (IC650) Chip enable signal output to the CSV (IC650) "L" active Sircs remote control signal input from the remote control receiver (IC901) PLL serial data input from the FM/AM PLL (IC10) PLL serial data output to the FM/AM PLL (IC10) PLL serial data transfer clock signal output to the FM/AM PLL (IC10) PLL chip enable signal output to the FM/AM PLL (IC10) "H" active Power on/off control signal output of the illumination LED and liquid crystal display driver (IC900) "H": power on Depends on initial setting of power select switch (S600) Power select switch (S600) on: "H" output at the accessory on Power select switch (S600) off: "H" output at the power on Dimmer control in/out terminal At initial mode: The presence of dimmer select function is set (if this status, if "L" is input, the dimmer select function is present) At normal mode: LCD back light brightness control signal output LED drive signal output of the TIR indicator "H": LED on Not used (open)
1
SEEKOUT
O
2
AF-SEEK
O
3
WIDE
O
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
ST-MONO TUNMUTE FM-ON TU-ON VCC CSV-RST BUS-ON SYSRST DOORSW LCD SO LCD CKO BEEP LCD CE UNISI UNISO UNICKO SD-IN CSV-SO CSV-CKO CSV-CE SIRCS PLLSI PLLSO PLLCKO PLLCE
I/O O O O -- O O O I O O O O I O O I O O O I I O O O
29
ILL-ON
O
30
DIMMER
I/O
31
TIR-IND
O
50
Pin No. 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
Pin Name LCD INH VSS C AD-ON RE-IN0 RE-IN1 DVCC DVSS -- LCDANG AVCC AVRH AVRL AVSS KEYIN0 KEYIN1 RC-IN0 DSTSEL0 DSTSEL1 DSTSEL2 MTP VSM VCC RAMBU POWSEL EQ-SEL TESTIN PACK-IND TIR-PLAY SUB-SW1 SUB-SW0 VSS VOLCE MUTE VOLSO/ SUBSO VOLCKO/ SUBCKO
I/O O -- -- O I I -- -- I O -- I I -- I I I I I I I I -- I I I I O O O O -- O O O O Ground terminal
Function Blank indicate control signal output to the liquid crystal display driver (IC900) 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) Power supply terminal (+5V) (for D/A converter) Ground terminal (for D/A converter) Not used (fixed at "L") View field angle control signal is output when front panel is fully opened "H": front panel is fully opened 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) (LSW900, S900, LSW901 to LSW908) OFF, SEEK/AMS + + ) = 0 , MODE *, SOURCE, SOUND, DSPL, SHIFT, 1, 2, 3 keys input Key input terminal (A/D input) (SW801, LSW909, LSW912 to LSW918) 6, LIST, 10, 9, 8, 7, 6, 5, 4 keys input Rotary remote commander key input terminal (A/D input) Destination setting terminal (fixed at "L") Destination setting terminal (fixed at "H") Destination setting terminal (US model: fixed at 3/4 voltage, E model: frequency select switch input) Multi-path detection signal input from the RDS decoder Not used (open) FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX10) (A/D input) Power supply terminal (+5V) Internal RAM reset detection signal input from the RN5VD33AA (IC501) Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 100 msec after reset Power select switch (S600) input terminal Not used (fixed at "H") Setting terminal for the test mode "L": test mode, Normally: fixed at "H" LED drive signal output of the tape window illumination and 6 indicators (LED800, 802) "H": LED on "H" is output to turn on LED when front panel is opened AM/TIR selection signal output terminal Not used (pull down) "L": AM signal, "H": TIR signal "L": off (halt mode), "H": on (operation mode) "L": no display
Sub woofer output cut-off frequency select signal output terminal Sub woofer output cut-off frequency select signal output terminal Ground terminal Chip enable signal output to the main electrical volume (IC301) Audio line muting on/off control signal output terminal "H": active "H": muting on
Serial data output to the main electrical volume (IC301) and sub electrical volume (IC350) Serial data transfer clock signal output to the main electrical volume (IC301) and sub electrical volume (IC350)
51
Pin No. 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 to 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
Pin Name SUBCE FLASH-W IIC SIO IIC CKO RC-IN1 X1A X0A DAVN KEYACK BU-IN ILL IN TEL-ATT NOSESW ACC IN
TIR-D0 to TIR-D3
I/O O I I/O O I O I I I I I I I I I/O I I I I I -- I O -- I O O O O O O I I I I I I I O
Function Chip enable signal output to the sub electrical volume (IC350) "H" active Internal flash memory data write mode detection signal input terminal "L": data write mode Not used (fixed at "H" in this set) Two-way data bus with the external device Not sued (fixed at "H") Bus clock signal output to the external device Not sued (pull-up) Rotary remote commander shift key input terminal "L": shift 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 "H" active Not sued (open) 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" Battery detect signal input from the SONY bus interface (IC602) 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 Telephone muting signal input terminal At input of "H", the signal is attenuated by 20 dB Front panel block remove/attach detection switch (SW500) input terminal "L": front panel is attached Accessory detect signal input terminal "L": accessory on Two-way data bus with the external device 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 (IC500) and reset switch (SW800) "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) Busy detection signal input from the external device Not used (fixed at "L") Data write strobe signal output to the external device Not used (open) Chip enable signal output to the external device Not used (open) Chip enable signal output to the external device Not used (open) Reset signal output to the external device "H": reset Not used (open) Power down control signal output to the external device "L": power down Not used (open) Data read strobe signal output to the external device Not used (open) Metal detection signal input terminal "L": normal position, "H": metal position Whether a music is present or not from CXA2510AQ (IC250) 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
HSTX MD2 MD1 MD0 RESET VSS X0 X1 VCC TIR-BUSY TIR-WR TIR-CE0 TIR-CE1 TIR-RES TIR-PDOWN TIR-RD MTLIN AMSIN REEL POS0 POS1 POS2 POS3 LM-EJ
Motor drive signal output to the loading/tape operation motor drive (IC201) "H" active (For the eject direction and reverse side operation) *1
52
Pin No. 110 111 112 113 114 115
Pin Name LM-LOD CM-ON TAPEON N-ROUT AMSON DOLBC
I/O O O O O O O
Function Motor drive signal output to the loading/tape operation motor drive (IC201) (For the loading direction and forward side operation) *1 Capstan/reel motor (M901) drive signal output terminal "H": motor on "H": tape on Tape system power supply on/off control signal output terminal "H" active
Forward/reverse direction control signal output to the CXA2510AQ (IC250) "L": forward direction, "H": reverse direction Tape auto music sensor control signal output to the CXA2510AQ (IC250) "L" is output to lower the gain for audio level at FF/REW mode Standby on/off control signal output to the power amplifier (IC700) "L": standby mode, "H": amp on 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 to the CXA2510AQ (IC250) (dolby on at "H" output) "H" is input when CSV (IC650) sends data Power supply on/off control signal output of the illumination LED Ground terminal Main system power supply on/off control signal output to the BA3918 (IC502) "H": power on "H": power on
116
DOLBY
I/O
117 118 119 120
CSV-NAR LEDON VSS POWON
I O -- O
*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"
53