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MDX-C7900/C7900R
SERVICE MANUAL
Ver 1.1 2001.08

US Model Canadian Model E Model
MDX-C7900

AEP Model UK Model
MDX-C7900R

Refer to RM-X4S Service Manual (9-925698-[][]) issued previously for information of remote commander (RM-X4S) supplied with this set.

Photo: MDX-C7900

Model Name Using Similar Mechanism Base Mechanism Type Optical Pick-Up Name

NEW MG-164KT-138 KMS-241A/J2N

SPECIFICATIONS

­ Continued on next page ­

MDX-C7900

FM/AM MINIDISC PLAYER
MDX-C7900R

FM/MW/LW MINIDISC PLAYER
9-925-787-12
2001H0500-1 C 2001.8

Sony Corporation
e Vehicle Company Shinagawa Tec Service Manual Production Group

Ver 1.1

TABLE OF CONTENTS 1. 2. SERVICE NOTE ....................................................... 3 GENERAL
Location of Controls (MDX-C7900) .............................. 4 Location of Controls (MDX-C7900R) ........................... 5 Resetting the Unit ........................................................... 6 Detaching the Front Panel ............................................... 6 Preparing the Rotary Commander .................................. 6 Setting the Clock ............................................................. 6 Installation (US, Canadian) ............................................ 7 Installation (AEP, UK, E) ............................................... 8 Connections ..................................................................... 10

3. 4.

DISASSEMBLY ......................................................... 13 ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 18 MD Section ..................................................................... 18 Tuner Section .................................................................. 18

5.

DIAGRAMS

5-1. Block Diagram ­ SERVO Section ­ ............................... 21 5-2. Block Diagram ­ MAIN Section ­ ................................. 23 5-3. Block Diagram ­ DISPLAY/KEY CONTROL Section ­ ........................ 25 5-4. Block Diagram ­ BUS CONTROL/POWER SUPPLY Section ­ ........... 27 5-5. Printed Wiring Boards ­ MECHANISM DECK Section ­ ................................. 29 5-6. Schematic Diagram ­ MECHANISM DECK Section ­ ................................. 31 5-7. Schematic Diagram ­ MAIN Section ­ .......................... 35 5-8. Printed Wiring Board ­ MAIN Section ­ ....................... 39 5-9. Printed Wiring Board ­ PANEL Section ­ ..................... 43 5-10. Schematic Diagram ­ PANEL Section ­ ........................ 45 5-11. IC Pin Function Description ........................................... 55

6. 7.

EXPLODED VIEWS ................................................ 64 ELECTRICAL PARTS LIST ............................... 68

­2­

SECTION 1 SERVICE NOTE
· Type A/B Discrimination
[MAIN BOARD] (Component Side)

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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

IC700

MB90574PFV-G-113-BND (C7900R: Type A) MB90574PFV-G-114-BND (C7900: Type A) MB90F574PFV-G-113 (C7900R: Type B) MB90F574PFV-G-114 (C7900: Type B)

­3­

This section is extracted from instruction manual.

SECTION 2 GENERAL

­4­

­5­

­6­

­7­

­8­

­9­

­ 10 ­

­ 11 ­

­ 12 ­

SECTION 3 DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.

FRONT PANEL

2

1 Push the button (release).

3 Remove the front panel of the arrow.

COVER ASS'Y, PANEL (SUB) ASS'Y

1

2 cover ass'y

4 panel (sub) ass'y

3 four screws (PTT2.6 × 6)

1

3 screw (PTT2.6 × 6)

­ 13 ­

MECHANISM DECK (MG-164KT-138)
1 two screws (PTT2.6 × 4)

2 mechanism deck (MG-164KT-138)

MAIN BOARD
1 eight screws (PTT2.6 × 10)

3 three screws (PTT2.6 × 6) (ground point)

1 two screws (PTT2.6 × 10)

2 heat sink 4 main board

5 insulating sheet

­ 14 ­

SERVO BOARD
3 two screws (BVTT2 × 4) 3 two screws (BVTT2 × 4)

4 servo board

1 sensor flexible board (CN102)

2 flexible board (CN103)

FLOAT BLOCK
5 Pushing an arrw A part, raise the float block up ward at the front to release a lock. A 3 spring (FL2)

2 MD cover ass'y

1 four screws (BVTT2 × 4)

float block

lever (lock R) lever (lock L) Release of the lock.

3 spring (FL2) 4 two springs (FL)

­ 15 ­

HOLDER ASS'Y

5 holder ass'y

1 spring (CHKG)

4 washer (M)

2 stop ring E (1.5)

3 lever (lock R)

1 spring (CHKG) 3 lever (lock L) 2 stop ring E (1.5)

OPTICAL PICK-UP (KMS-241A/J2N)
4 screw (B2 × 3) 6 bearing (SL) 5 feed screw ass'y 7 optical pick-up (KMS-241A/J2N)

1 two screws (K2 × 3)

3 screw (K2 × 3)

2 shaft (SL2)

­ 16 ­

MOTOR ASS'Y (M901, M902, M903), SENSOR BOARD
4 screw (P1.7 × 1.8) 9 two screws (P1.7 × 1.8) 5 bracket (SL) 2 two screws (2 × 8) 6 motor ass'y (M902)

0 motor ass'y (M901)

7 screw (B2 × 3)

3 sensor board

8 base (SL) !TM motor ass'y (M903) !¡ screw (P2 × 2.2)

1 Remove the solders of motor (M901, M902, M903).

­ 17 ­

SECTION 4 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. 1. Set the "power select" switch (S700) is "A (ON)" position. 2. Turn ON the regulated power supply. (All LEDs on the set lights up, and the clock is displayed.)
Note: Press the

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
SHUF *1 REG

[OFF]

button, if the clock is not displayed.

3. 4. 5. 6.

Push the preset [4] button. Push the preset [5] button. Press the preset [1] button for more than two seconds. Then the display indicates all lights, the test mode is set.

*1: MDX-C7900R is indicates "98.00". Adjustment Location: See page 20. FM Stereo Separation Adjustment Setting: [SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 µF set speaker out terminal
MDX-C7900 Carrier frequency Output level Mode main Modulation sub 19 kHz pilot 97.9 MHz 60 dB (1 mV) stereo 1 kHz, 33.75 kHz deviation (45%) 1 kHz, 33.75 kHz deviation (45%) 7.5 kHz deviation (10%) MDX-C7900R 98.0 MHz 70 dB (3.2 mV) stereo 1 kHz, 20 kHz deviation (22.6%) 1 kHz, 20 kHz deviation (22.6%) 7.5 kHz deviation (10%)

1. Push the [OFF] button. 2. Return the "power select" switch (S700) to initially set position. See the adjustment location from on page 20 for the adjustment.

level meter 4 + ­

MD SECTION
MD section adjustments are done automatically in this set.

TUNER SECTION

0 dB=1 µV

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.

1. 2. 3. 4.

FM Auto Scan/Stop Level Adjustment. FM Stereo Separation Adjustmnet. AM (MW) Auto Scan/Stop Level Adjustment. RDS S-Meter Adjustment. Procedure:

FM Auto Scan/Stop Level Adjustment Setting: [SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 µF set Carrier frequency: 97.9 MHz (MDX-C7900) 98.0 MHz (MDX-C7900R) Output level : 22 dB (12.6 µV) Mode : mono Modulation : 1 kHz, 22.5 kHz deviation (30%)

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. 2. Push the [SOURCE] button and set to FM. Display
SHUF *1 REG

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 20.

­ 18 ­

AM (MW) Auto Scan/Stop Level Adjustment Setting: [SOURCE] button (MDX-C7900): AM [SOURCE] button (MDX-C7900R): MW
30 15 pF 65 pF AM RF signal generator AM dummy antenna (50 )

RDS S-Meter Adjustment (MDX-C7900R) Setting: [SOURCE] button: FM
FM RF signal generator antenna jack (J1) 0.01 µF set Carrier frequency: Output level : Mode : Modulation : 98.0 MHz 35 dB (56.2 µV) mono no modulation

Adjustment Location:
­ SET UPPER VIEW ­

RV1 RDS S-METER Adjustment

TU1

set

antenna jack (J1) Carrier frequency: 1000 kHz (MDX-C7900) 999 kHz (MDX-C7900R) 30% amplitude modulation by 1 kHz signal Output level : 33 dB (44.7 µV)

Procedure: 1. Set to the test mode. (See page 18.) 2. Push the [SOURCE] button and set to FM. Display
SHUF

RV1 AM (MW) AUTO SCAN/STOP LEVEL Adjustment
REG

Procedure: 1. Set to the test mode. (See page 18.) 2. Push the [SOURCE] button and set to FM. 3. Push the [MODE] button and set to AM (MDX-C7900) or MW (MDX-C7900R). Display
*2 *3 TP REG SHUF

RV2 FM AUTO SCAN/STOP LEVEL Adjustment

3. Push the preset [10] button. 4. Adjust RV1 on MAIN board so that the display indication is "15.8". Display
SHUF

RV4 FM STEREO SEPARATION Adjustment

REG

Specification: Display indication : 15.6 to 16.4 Adjustment Location: See page 20.

4. Adjust with the volume RV1 on TU1 so that the "AM" or "MW" indication turns to "AM0" or "MW0" indication on the display window. But, in case of already indicated "AM0" or "MW0", turn the RV1 so that put out light "0" indication and adjustment. Display
*2 *3 TP REG SHUF

*2: MDX-C7900R is indicates "MW". *3: MDX-C7900R is indicates "999". Adjustment Location: See page 20.

­ 19 ­

­ 20 ­

MDX-C7900/C7900R
5-1. BLOCK DIAGRAM ­ SERVO Section ­

SECTION 5 DIAGRAMS
15 TX 100 EFMO IC301 (1/2)

· SIGNAL PATH
ADDT 23

: MD PLAY
DIGITAL SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 2M BIT D-RAM IC301 (1/2)

SHOCK PROOF MEMORY CONTROLLER

EFM/ACIRC ENCODER/DECODER

48 47
MORFO MORFI

RF AMP, FOCUS/TRACKING ERROR AMP IC302 51 52 RFO 46 40 AGCI RF AGC & EQ EQ B.P.F. WBL AUX 33 RF 38 55 ASYO ASYI RFI COMPARATOR

ATRAC ENCODER/DECODER

FILI 59 PCO 58 CLTV 61 FILO 60

FILTER

PLL

SAMPLING RATE CONVERTER

DIGITAL AUDIO INTERFACE

DIN 21 DOUT 22

DADT

A B

(Page 5)

I J

1 2

I J

DADT

BCK, LRCK, FS256
24
BCK LRCK FS256

(Page 5)

RF AMP

26 25 27
XBCK LRCK FS256

D-RAM PEAK BOTM 37 36
ADFG

F B

3T

TEMP PEAK & BOTTOM WBL

CLOCK GENERATOR

OSCI OSCO

16 17

512FS OSC IC304

X301 22.5792MHz

A E DETECTOR C D E F

XRST DQSY

8 9

E F

I-V AMP

TRACKING ERROR AMP COMMAND

SE

26 28

94 93 10 LASER DIODE ILCC PD LD PD AUTOMATIC POWER CONTROL Q302 APC 11
WBL 3T EQ

12

11

14

9 8

5 6 7

MNT0 MNT1 MNT2 MNT3

SPRD

SQSY

SENS SRDT

SPFD

XINT

TE

1 2 3 4 XOE XWE XRAS XCAS

LD/PD AMP

F0CNT

10

SWDT SCLK XLAT

PD

APCREF

12 2 4 6

V-I CONVERTER

SERIAL/ PARALLEL CONVERTER, DECODER

5

13 LEVEL SHIFT IC502

3 1

LEVEL SHIFT IC503 4 2

41 45 44 42

22 3 4 23

6

12

13 1 3 5

12 OPTICAL PICK-UP (KMS-241A/J2N) FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED MOTOR DRIVE IC303

20 +3.3V

16 17 18
FOK SHOCK XBUSY SLOCK

TH501
SWDT SCLK XLAT

9 ­ 12, 14 ­ 18, 5 A0 ­ A9

34

79

32 ­ 29, 34 ­ 38, 43

FOCUS ERROR AMP

FE

F0CNT

SPINDLE SERVO

SWDT SCLK XLAT

A00 ­ A09

4 5 6 7

A B C D

B.P.F.

29

30

32

78

I-V AMP

ABCD AMP

ABCD

35 CPU INTERFACE MONITOR CONTROL

1, 2, 24, 25 D0 ­ D3

D

A

AT AMP

ADFG

47, 46, 48, 49

I

C

B

J

ADFM

ADIN

ADIP DEMODULATOR/ DECODER

SUBCODE PROCESSOR

INTERNAL BUS

D0 ­ D3

OE WE RAS CAS

D-RAM IC307

LOCK

PSB 16 PEAK HOLD Q301 SPFD SPRD +3.3V 13 RECP APCREF 83 M902 (SLED) SFDR 92 SRDR 91
PWM GENERATOR

C

(Page 5)

ABCD 59
MD-RST

62
SQSY

55
CC-XINT

54 52
SENS MD-SI

45 51 64
MD-SO MD-CKO MD-LAT

26 27 28 29
MNT0 MNT1 MNT2 MNT3

39
TEMP

21
LOCK

M901 (SPINDLE)

M

6 OUT4F 8 OUT4R

IN4R 3 IN4F 4

IC306

66 75 64 65 74 73 62 63
AUX1 AUX2 ABCD FE TE SE PEAK BOTM

EXTAL

31 X501 10MHz

EJECT

LOAD

C-SW

M

27 OUT2F 25 OUT2R

IN2F 29 IN2R 30

A/D CONVERTER DIGITAL SERVO SIGNAL PROCESS

7

6

63

11

E-SW

ANALOG MUX

56

2-AXIS DEVICE
(TRACKING) (FOCUS)

FCS+

21 OUT1F 23 OUT1R

IN1F 19 IN1R 18

FFDR 88 FRDR 89

FROM CPU INTERFACE XLRF CKRF DTRF

5 LOADING MOTOR DRIVE IC305 RIN

4 FIN LOADING START/ EJECT END LOADING END

(LIMIT) ON: When the optical pick-up is inner position. (ON: When completion of the disc loading.)

FCS­ TRK+ TRK­ 12 OUT3F 10 OUT3R IN3F 14 IN3R 15 TFDR 86 TRDR 85 DIGITAL SERVO SIGNAL PROCESSOR IC301 (2/2)

AUTO SEQUENCER

80 81 82

OUT1 OUT2 1 7 M903 (LOADING)

ON: When the disc loading start and thedisc eject completion.

M

05

­ 21 ­

­ 22 ­

LIMIT-IN

AUTOMATIC POWER CONTROL

MD MECHANISM CONTROLLER IC501 (1/2)

XTAL

32

MDX-C7900/C7900R
5-2. BLOCK DIAGRAM ­ MAIN Section ­

DIGITAL D-BASS CONTROL IC201

DIGITAL FILTER, D/A CONVERTER IC202 DOUT 9 BCKO 10 LRCO 11 DATA 5 BCK 6 LRCK 4 7 SEQUENTIAL CONTROL 1 ZERO XTI CLK CONTROL VOUTL INPUT INTERFACE DIGITAL FILTER NOISE SHAPER D/A CONVERTER 12 VOUTR 9 R-CH LOW-PASS FILTER IC203 MUTING Q991 R-CH

A
(Page 4)

DADT
BCK LRCK

5 3 1

LEVEL SHIFT IC204

6 4 2

DI 3 BCKI 2 LRCI 1

· SIGNAL PATH : MD PLAY : FM : AM (MW)

INPUT INTERFACE CIRCUIT

DIGITAL SIGNAL PROCESSOR

OUTPUT INTERFACE CIRCUIT

COUNTER PD PHASE 2 COMPARATOR AMPI SELECTOR & VCO DIGITAL AUDIO PLL IC200
BCK, LRCK

MODE CONTROL
MUTE DM2

CKO 10 4

1

REF

4

CLK

SYSTEM CLOCK MODE CONTROL
MOD1 MOD2 DB/DS

18

17

MUTING CONTROL SWITCH Q903 MUTING Q301 R-CH

CNP300 (2/2)

(L) R-CH (R)

FRONT LINE OUT

14 15 16
MODE1 MODE2 EMPH

(L)
MUTING Q300 R-CH

B
(Page 4)

BCK, LRCK, FS256

FS256 R-CH (R)

REAR LINE OUT

CNP300 (1/2)

(L) (R)
BUS AUDIO IN

R-CH
FM B+ AM B+ D3 POWER AMP IC500 L3 (MD-L) 36 L4 (AUX-L) 35 INPUT L2 (FM-L) SELECTOR 37 L1 (AM-L) 38 MUTING Q101 R-CH
FM-DET

CNP500 (1/2) 1 FRONT L (+) 9 FRONT L (­) 4

J1 (FM/AM ANTENNA) 2 FM-ANT 1 AM-ANT

8
FM +B

10
AM +B

9
+B

LSELO 34 33

LVR IN

FM-L-CH 18 FM-R-CH 16

LT VOLUME OUT 28 CONTROL

27

LS IN

TONE CONTROL

LS OUT

23

22

LT IN

LF OUT FADER CONTROL LR OUT

FL+ 5 21 20 MUTING Q302 FR+ 21 R-CH R-CH 14 FR-IN FR­ 23 RL+ 9 11 RL-IN RL­ 7 MUTING Q303 RR+ 17 R-CH R-CH 15 RR-IN RR­ 19
MUTE ST-BY

12 FL-IN FL­ 3

R-CH

FM/AM TUNER UNIT TU1
SEEK SD ST/MONO S-METER AM-IF FM-IF

DI CL

CE

LO/DX VCO

ELECTRICAL VOLUME IC300

COMMAND

DECODER

SHIFT REGISTER & LATCH

FRONT R (+) 12 2 10 FRONT R (­) REAR L (+) REAR L (­)

CONTROL

VT

AM DET 12 MUTING Q100 R-CH (C7900R)

17 16 18
DATA CLK CE

4 6

21

11

5 (C7900R) AM B+ LOW-PASS FILTER Q4 AF SEEK SWITCHING Q5 IC103 LOW-PASS FILTER SWITCHING

13 20 22

19

23

3 11

REAR R (+) REAR R (­)

+

MUTING CONTROL SWITCH Q103 14
VDDA

B+ SWITCH Q51

BACKUP +5V FM B+

7
VDDD

22 RDS DECODER IC102 MUTING CONTROL SWITCH Q700

4 13 15 LEVEL SHIFT Q500 14 TEL ATT TEST ILL IN

9 16 15 11
LO/DX FM OSC AM OSC SEEK

13
IF

18
PD

SIGNAL QUALITY DECODER RDS/RDBS DEMODULATOR & DECODER

5 4 INTERFACE REGISTER

DOUT DIN CLK CE

FM/AM PLL IC100

RV1 RV1 SIGNAL METER

RDS SIGNAL BUFFER Q50

SC 57 kHz OUT 18 16 BAND-PASS MPX FILTER
MPTH

19

CIN

CLOCKED COMPARATOR

XI

1

20

XO

6 5 4 2

20 X1 7.2MHz SIGNAL METER BUFFER Q1

LVIN

OSCO

DAVN

MULTI PATH DETECTOR

2

OSCILLATOR & CLOCK
OSCI

IIC BUS SLAVE TRANSCEIVER
SDA SCL

X2 4.332MHz 9 10 11 85
PLL SI PLL SO PLL CKO PLL CE

MODE1 MODE2 EMPH

DATA CLK CE

5

4

8

9

10

65
AF SEEK

82 83 81
SEEKOUT SD IN ST IN/MONO

53
S METER (VSM)

62
TU ATT

52
MPDH (MTP)

67
DAVN

70
RDS SI

71
RDS CKI

26 27 41
VOL SO VOL CKO VOL CE

31 16 59
DBMOD1 DBMOD2 EMPH O

60
AU ATT

55 56
AMP ON AMP ATT

80
TEL ATT

32 57
TESTIN ILL IN

C
(Page 4)

LOCK

58 LOCK IN

MASTER CONTROLLER IC700 (1/3)

05

­ 23 ­

­ 24 ­

MDX-C7900/C7900R
5-3. BLOCK DIAGRAM ­ DISPLAY/KEY CONTROL Section ­

(LSW813: AEP, UK model only)

EN801 VOLUME/BASS/TREBLE/ BALANCE/FADER CONTROL

D900

LSW801 ­ 804, LSW806 ­ 821

J900 (REMOTE IN)

ROTARY ENCODER EN801 D912

LSW805 D-BASS

VOL+

VOL­

CNP801 FRONT PANEL SIDE

12

KEY ACTIVE SWITCH Q905

BACKUP +5V

CN900 MAIN BODY SIDE

12

BUZZER DRIVE Q701

BZ1 (BUZZER)

49 72

46

47

106 107

50

79

37

12

15

D-BASS IN

KEY IN1

AD ON

REIN0

REIN1

BAND (9K­10K)

MASTER CONTROLLER IC700 (2/3)

LCD SO LCD CKO LCD CE

NOSE SW

RC IN0 RC IN1

KEY IN0

KEYACK

BEEP

93

92

73

74

100

13 14 104

40

X700 3.68MHz

X701 32kHz S701 (FREQUENCY SELECT) MW 10K/FM 200K MW 9K/FM 50K (C7900: E model) LSW801, 804, 806, LSW808, 809 ­ 811, LSW813 ­ 821 LED DRIVE Q804 LED DRIVE Q803 (LSW813: AEP, UK model only) B+ SWITCH Q806 LCD +10V LCD +10V

D811 ­ 817, LSW802, 807, 812

CONTRAST SWITCHING Q901, 902 R845 OSC LIQUID CRYSTAL DISPLAY DRIVER IC801 21 20 18 17 19 22 ­ 25 KEY IN1 ­ KEY IN4 2 1 4 11 ­ 6 VLC0 ­ VLC5 Q802 Q801

BATT

DATA CLK STB

POWER ON

AMBER

OSC OUT

OSC IN

GREEN

SEG1 ­ SEG65 05 26 ­ 90

COM0 ­ COM7 100 ­ 93

DIMMER

3

DIMMER
LCD801 LIQUID CRYSTAL DISPLAY

LCDANG

X1A

X1

X0

X0A

D

(Page 10)

­ 25 ­

­ 26 ­

MDX-C7900/C7900R
5-4. BLOCK DIAGRAM ­ BUS CONTROL/POWER SUPPLY Section ­

BATT (POWER AMP (IC500) B+) MASTER CONTROLLER IC700 (3/3) BACKUP +5V RESET SIGNAL GENERATOR IC801 S900 (RESET) SONY BUS INTERFACE IC600 RST RESET SWITCH RST RAM RESET IC802 D702 +9V (FOR VT) 13 29 SYSRET RAMBU 102 BACKUP +5V +9V REGULATOR Q2 FM B+ (FM CIRCUIT B+) AM B+ (AM CIRCUIT B+) COM +8V (ELECTRICAL VOLUME (IC300) B+) 6 ANP+B 8 AMT+B REGULATOR IC800 11 FM8V 10 AM8V F1 9 COM8V VCC 7 16 BATT 90 RESET +5V (FM/AM PLL (IC100) B+) CNP500 (2/2) 6 +5V REGULATOR Q6 ANT REM AMP REM 5

CNJ600 BUS CONTROL IN (FOR SONY BUS) 2 RESET 2

5 DATA 6

DATA

DATA IN DATA OUT

9 8 11

21 UNI SO 20 UNI SI 22 UNI CKO PW SEL 95

S700 (POWER SELECT) ON OFF

4 CLK 6 BUS ON BUS ON SWITCH Q600 4

CLK

CLK IN

D803 BACKUP +5V (Type B)

5 BU+B
STB MODE1 MODE2

BUS ON BUS OUT BUS ON ON IN 1 12 SWITCH

36 BUS-ON PULLUP +5V PW ON 109 FM ON 110

4

3

2

7 BATT 3

BATT

BATTERY BU IN 10 SWITCH

76 BU IN TUN ON 111

D701 LAMP ON (ILL ON) 108 ACC IN 64

TH600

D604 D603

+5V REGULATOR IC900 (Type A)

BATT B+

BATTERY DETECT Q601 LCD +10V (LCD DRIVER (IC801) B+) PL801, 802 (FOR BACK LIGHT) 60 BU-IN 61 BUS-ON 30 RESET 49 UNISI 48 UNICKI LEVEL SHIFT Q603 50 UNISO

MD MECHANISM CONTROLLER IC501 (2/2)

BACK LIGHT LAMP DRIVE Q805, 807

+10V REGULATOR Q903, 904

REGULATOR CONTROL SWITCH Q906

LOAD +12V LOADING MOTOR DRIVER (IC305) B+ +5V REGULATOR Q252

D/A +5V 46 LINKOFF REGULATOR CONTROL SWITCH Q253

B+ SWITCH Q402, 403 MD-ON 65 MDMON 10
VCC

+12V REGULATOR Q254

REGULATOR CONTROL SWITCH Q255 DRIVER +5V MOTOR/COIL DRIVER (IC303) B+ DC/DC CONVERTER IC250 B+ SWITCH Q250

+3.3V

+3.3V REGULATOR IC401, Q401

05 ACCESSORY CHECK Q900

Q251 D913 7 ACC

DIMMER

D

(Page 8)

­ 27 ­

­ 28 ­

MDX-C7900/C7900R
5-5. PRINTED WIRING BOARDS ­ MECHANISM DECK Section ­
· Semiconductor Location Ref. No. Location
D401 D501 IC301 IC302 IC303 IC304 IC305 IC306 IC307 IC401 IC501 IC502 IC503 Q301 Q302 Q401 Q402 Q403 E-6 E-4 B-5 C-2 B-3 C-5 F-6 B-4 B-8 E-6 F-3 D-5 D-4 A-4 C-1 D-6 E-7 E-7

Note on Printed Wiring Boards: z · : Through hole. f · : internal component. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

­ 29 ­

­ 30 ­

Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 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. f : internal component. · Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Note: Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce por tant le numéro spécifié.

5-6. SCHEMATIC DIAGRAM ­ MECHANISM DECK Section ­

· See page 39 for IC Block Diagrams and page 45 for Waveforms.

· U : B+ Line. · Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. · Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : MD : 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. E : MD

MDX-C7900/C7900R

­ 31 ­

­ 32 ­

­ 33 ­

­ 34 ­

MDX-C7900/C7900R

Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 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. f · : internal component. · C : panel designation. · U : B+ Line. · H : adjustment for repair. · Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. · Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM ( ) : AM : LW < > : MD

· 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 E : MD L : BUS AUDIO IN · Abbreviation CND : Canadian G : German

5-7. SCHEMATIC DIAGRAM ­ MAIN Section ­ · See page 3 for Type A/Type B Discrimination.

· See page 42 for IC Block Diagrams and page 45 for Waveforms.

­ 35 ­

­ 36 ­

­ 37 ­

­ 38 ­

MDX-C7900/C7900R

· Semiconductor Location (Component Side) Ref. No. Location Ref. No. Location
D3 D5 D200 D201 D202 D302 D303 D500 D501 D504 D505 D506 D507 D508 D600 D601 D602 D603 D701 D702 D800 D801 D802 D803 D900 D901 D902 D903 D904 D907 D909 D910 D911 D912 D913 D914 IC100 IC102 IC103 IC200 IC202 IC203 F-11 H-12 J-5 D-7 D-6 B-12 G-8 B-5 B-5 B-7 B-6 B-7 B-8 B-8 B-2 B-2 C-2 D-3 K-7 K-10 F-3 E-4 I-2 I-2 B-1 J-6 K-10 K-10 K-9 J-7 J-11 J-11 J-11 J-11 D-4 G-1 E-12 I-12 H-12 F-3 G-5 H-5 IC204 IC250 IC300 IC600 IC700 IC801 IC802 Q1 Q2 Q4 Q5 Q6 Q50 Q51 Q100 Q102 Q103 Q250 Q252 Q253 Q254 Q255 Q300 Q301 Q302 Q303 Q400 Q401 Q402 Q403 Q500 Q600 Q603 Q700 Q900 Q901 Q902 Q905 Q906 Q991 Q993 E-4 J-6 E-8 D-2 I-8 J-2 J-2 D-11 C-11 F-13 H-12 C-13 I-13 J-13 H-13 G-12 H-12 J-5 D-7 D-6 C-6 D-5 C-7 C-7 C-7 C-7 C-8 C-9 B-8 B-9 B-6 D-3 D-2 G-7 D-4 K-7 K-6 K-10 J-7 G-7 G-5

5-8. PRINTED WIRING BOARD ­ MAIN Section ­

· See page 3 for Type A/Type B Discrimination.

· Semiconductor Location (Conductor Side) Ref. No. Location
D1 D4 D300 D301 D502 D503 D509 D510 D604 D700 D905 D906 D908 D916 IC201 IC500 IC800 IC900 Q101 Q251 Q601 Q701 Q903 Q904 Q992 C-2 C-4 B-5 B-3 B-12 B-8 B-7 B-7 C-13 H-7 K-5 K-5 K-7 K-12 E-10 A-7 E-13 F-13 H-4 I-9 D-13 K-9 H-13 H-12 G-5

Note on Printed Wiring Board: · X : parts extracted from the component side. f · : internal component. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) · Abbreviation CND : Canadian

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

­ 39 ­

­ 40 ­

­ 41 ­

­ 42 ­

MDX-C7900/C7900R

5-10.
· Semiconductor Location (Component Side) Ref. No. Location
D811 D812 D813 D814 D815 D816 D817 IC801 Q806 Q807 C-3 B-3 A-4 A-2 B-1 C-2 A-11 B-8 C-4 B-1

SCHEMATIC DIAGRAM ­ PANEL Section ­

· See page 46 for Waveform.

5-9. PRINTED WIRING BOARD ­ PANEL Section ­

· Semiconductor Location (Conductor Side) Ref. No. Location
D802 D803 D804 D806 D807 D808 D819 Q801 Q802 Q803 Q804 Q805 B-12 B-12 B-12 B-6 B-6 C-12 B-2 B-5 B-5 B-5 B-5 B-2

Note on Printed Wiring Board: · X : parts extracted from the component side. · b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 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. · C : panel designation. · U : B+ Line. · Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.

· Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM (AMBER Illumination) ( ) : FM (GREEN Illumination) · 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.

­ 43 ­

­ 44 ­

­ 45 ­

­ 46 ­

· IC Block Diagrams ­ SERVO Board ­ IC301 CXD2652AR
APCREF F0CNT TEST3 TEST2 TEST1 SRDR DVDD DCHG SPRD EFMO TRDR LDDR DVSS FRDR SFDR ADFG SPFD CKRF TFDR DTRF XLRF FFDR FGIN APC FS4

100 99 98 97 96 95

94 93

92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76

AUTO SEQUENCER

MNT0 1 MNT1 2 MNT2 3 MNT3 4 MONITOR CONTROL EACH BLOCK

SPINDLE SERVO

PWM GENERATOR

75 AUX2 74 TE 73 SE 72 AVSS 71 ADRB

ADIP DECODER SWDT 5 SCLK 6 XLAT 7 SRDT 8 SENS 9 XRST 10 SQSY 11 DQSY 12 RECP 13 SUBCODE PROCESSOR CPU I/F EACH BLOCK SERVO DSP A/D CONVERTER ANALOG MUX

70 ADRT 69 AVDD 68 ADIO 67 VC 66 AUX1 65 FE 64 ABCD 63 BOTM 62 PEAK 61 CLTV

PLL

60 FILO 59 FILI 58 PCO 57 PDO 56 AVSS

XINT 14 TX 15 OSCI 16 OSCO 17 XTSL 18 NC 19 DVSS 20 DIN 21 DOUT 22 CLOCK GENERATOR EACH BLOCK

SHOCK RESISTANT MEMORY CONTROLLER

EFM/ACIRC ENCODER/ DECODER

DIGITAL AUDIO I/F

SAMPLING RATE CONVERTER

COMP

55 RFI 54 BIAS 53 AVDD 52 ASYI 51 ASYO

ADDT 23 DADT 24 LRCK 25

ATRAC ENCODER/DECODER

ADDRESS/DATA BUS A00 - A11, D0 - D3

26 27 28

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

50

DVDD

DVSS

FS256

XRAS

XBCK

XCAS

­ 47 ­

MVCI

XWE

XOE

A03

A02

A01 A00

A10

A04

A05

A06

A07

A08

A11

A09

D1

D0

D2

D3

IC302

CXA2523R
COMPO COMPP MORFO RF AGC MORFI ADDC PEAK AGCI OPN OPO RFO RF

48

47

46

45 ­ + USROP

44

43 42 + ­ BPF3T

41

40 RF AGC

39

38 EQ

37

+ ­

RFA1

USRC DET EQ

RFA2 I J 1 2 ­1 ­ ­2 ­ CFST ­ 1 ­ ­2 GRV GRVA ­2 ­1 WBL HLPT ­1 ­2 PTGR 3T PEAK BOTTOM 3T

PEAK3T P-P WBL

TEMP 36 BOTM

VC

3

A

4 IVR

B

5 IVR

C

6 IVR

D

7 IVR

E

8 IVR

F

9 IVR

GSW IV PD 10
+ ­ + ­

APC 11 APCREF 12 13
GND

TEMPI

TEMPR

SWDT

SCLK

EQADJ

VREF

F0CNT

­ 48 ­

XSTBY

3TADJ

XLAT

VCC

­ + + ­ + ­ + ­ + ­ + ­ + ­

CVB

PBH

35 ABCD 34 FE 33 AUX BPFC 32 ADFG 31 ADAGC

AA

+ + + +

ABCDA

BB

+ + ­ ­

30 ADIN FEA

CC BPF22 ­ ­ + + DD WBL ­ + ­ + EFB TESW PTGR WBL ATA ADIP AGC

DET

29 ADFM

­1 ­2 SEA

TG

28 SE 27 CSLED

EE

+ ­

EE'

­1 ­2 TEA

TG

26 TE

FF

+ ­ FBAL

FF'

WBL 3T EQ VI CONV 25 WBLADJ

AUXSW COMMAND

BGR VREF

SCRI - PARA DECODE

14

15

16

17

18

19

20

21

22 23

24

IC303
CAPA­

BH6511FS-E2
PGND2 PGND1 OUT2R OUT1R CAPA+ OUT2F OUT1F VM12 IN2R IN1R VM2 VM1 IN2F IN1F VDD

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

INTERFACE

AMP

AMP

AMP

AMP

INTERFACE

VDD

CHARGE PUMP. OSC

PREDRIVE

PREDRIVE

PREDRIVE

PREDRIVE

INTERFACE

AMP

AMP

AMP

AMP

INTERFACE

PSB

1
GND

2
VG

3
IN4R

4
IN4F

5
VM4

6
OUT4F

7
PGND4

8
OUT4R

9
VM34

10
OUT3R

11
PGND3

12
OUT3F

13
VM3

14
IN3F

15
IN3R

16
PSB
26 GND 25 D4 24 D3 23 XCAS 22 XOE 21 NC 20 NC 19 NC 18 A8 17 A7 16 A6 15 A5 14 A4

IC305
OUT1 1

BA6287F
8 GND

VM 2

7 OUT2

DRIVER TSD

DRIVER

VCC 3

CONTROL LOGIC

6 VREF

POWER SAVE FIN 4 5 RIN

IC307

MSM51V4400-70TS-K

D1 1 D2 2 XWE 3

CLOCK OSC

NC 5 NC 6 NC 7 A9 8 A0­A9 COLUMN DECODER

SENSE REFRESH AMP INPUT/OUTPUT CONTROL SWITCH

ADDRESS BUFFER

A1 10 A2 11 A3 12 VDD 13

A0­A9

ROW DECODER

MEMORY CELL (4194204 BIT)

(4) OUTPUT BUFFER

A0 9

(4) INPUT BUFFER

XRAS 4

­ 49 ­

­ MAIN Board ­ IC100 BU2624FV-E2
20 XOUT 19 VSS PHASE DET XIN 1 REFERENCE DIVIDER MAIN COUNT CE CK DA CD 2 4 5 6 IF COUNT CTL P0 7 14 P2 I/O CTL SHIFT REGISTER LATCH 15 AMIN PRESCALER 18 PD 17 VDD 16 FMIN

P1

9

20BIT COUNT

13 IFIN

P3 10

12 SD 11 P4

IC102 SAA6588T-118 (MDX-C7900R)
SCOUT LVIN VSSA MPX MAD PSWN
12 11 PAUSE DETECTOR

VDDA

VREF

CIN

20

19

18

17

16

15

14

MULTI PATH DETECTOR

POWER SUPPLY & RESET 57kHz 8th ORDER BAND-PASS FILTER SIGNAL QUALITY DECODER 4 CLOCK 5 4 CLOCK INTERFACE REGISTER DATA DATA

CLOCKED COMPARATOR

RDS/RDBS DEMODULATOR

RDS/RDBS DECODER

TEST CONTROL

OSCILLATOR & CLOCK

IIC BUS SLAVE TRANSCEIVER

1 2

3

4

5

6

7

8

9

OSCI

DAVN

VSSD

SDA

OSCO

MRO MPTH

VDDD

TCON

SCL

AFIN
13 10

­ 50 ­

IC200
REF
1 2 3 4 5 6 7 8

TC9246F-TP1
16

IC201
VDD

SM5852FS-E2
16 15 14 13 DB/DS MOD2 MOD1 OPT

LRCI 1 BCKI 2 DI 3

VAR. PHASE REF. COMPARATOR

INPUT INTERFACE

PD

LOCK

DIGITAL SIGNAL PROCESSOR

LOCK DETECTION CIRCUIT

15 14

CLK 4
S2

SYSTEM CLOCK

VDDA

12 VDD

VSS 5 RSTN 6 TESTN 7 MUTEN 8 SEQUENTIAL CONTROL MUTE CONTROL MODE CONTROL 11 LRCO 10 BCKO 9 DOUT

PROGRAMMABLE COUNTER

MICRO COMPUTER INTERFACE

AMPI

S1

OUTPUT INTERFACE

13

VCO

12

AMPO

M2

11

VSSA

M1

10

XI

CKO

XO

SELECTOR

VSS

9

IC202
XTI DGND VDD 1 2 3

PCM1717E-ST2
CLK CONTROL 20 XTO 19 CLKO

IC250

NJM2360AM (TE2)

CS 1 Q1 ES 2 CT 3 GND 4

Q2

Q

S R Ipk CT OSC

8 CD 7 SI 6 V+ 5 INVIN COMP

LRCIN 4 DIN BCKIN ZERO 5 6 7

INPUT INTERFACE

18 ML/MUTE MODE CONT ROL 17 MC/DM1 16 MD/DM0 15 RSTB 14 MODE

DIGITAL FILTER

VREF 1.25V

+ ­

NOISE SHAPER 5LEVE DAC LOWPASS FILTER CMOS AMP 5LEVEL DAC LOWPASS FILTER CMOS AMP

D/C R

8

13 D/C L 12 VOUTL 11 VCC

IC600
BUS ON 1

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

VOUTR 9 AGND 10

RST 2

BATT 3

13 12 11 10

RST BUS ON CLK IN BU IN

CLK 4 VREF 5 DATA 6 GND 7

9 DATA IN 8 DATA OUT

­ 51 ­

IC300

LC75374E
LTOUT LSIN NC LVRIN LCOM NC LSB1 LT1 LT2 LT3 LSB2
23 22 LFIN + ­ + ­ ­ + ­ + + ­ 21 LFOUT

33

32

31 30

29

28 27 26 25 24

DECODER

LATCH

1

2

3 4

5

6 7 8 9 10

11

RVRIN

RCOM

RTOUT RSIN NC NC RSB1

IC800

BA3918-V3

REGULATOR

OVER VOLTAGE PROTECT + ­ + ­ + ­ + ­

1

2 3 4

5

6

7

8

9

10

RSB2

RT1 RT2

RT3

11

12

MODE2 MODE1 STB

VDD

COM

AMP

­ 52 ­

GND

NC

VCC

ANT

AM

FM

+ ­

R1 R2 R3 R4 RSELO

40 41 42 43 44

+ ­

­ +

­ +

­ +

VDD 39

­ +

LSELO L4 L3 L2 L1

34 35 36 37 38

+ ­ + ­

20 LROUT

19 VREF CONTROL 18 CE 17 DI 16 CL 15 VSS 14 RROUT

+ ­

+ ­ SHIFT REGISTER + ­

13 RFOUT 12 RFIN

· Waveforms ­ MECHANISM DECK Section ­
1 IC302 wh (TE) (PLAY MODE) 6 IC501 ea (EXTAL) (PLAY MODE) 3 IC201 1 (LRCL) (PLAY MODE)

0.5 Vp-p

2.7 Vp-p

5.1 Vp-p

0.1 µs 2 IC302 ef (FE) (PLAY MODE) 7 IC304 3 (IN) (PLAY MODE)

23 µs 4 IC201 2 (BCKI) (PLAY MODE)

0.3 Vp-p

3.5 Vp-p

5.2 Vp-p

44 ns 3 IC302 ek (RF) (PLAY MODE)

354 ns 5 IC202 1 (XTI) (PLAY MODE)

1.2 Vp-p

3.3 Vp-p

­ MAIN Section ­
4 IC301 wg (LRCK) (PLAY MODE) 1 IC204 1 (IN) (PLAY MODE)

88 ns

6 IC202 4 (LRCK) (PLAY MODE)

3.5 Vp-p

4.5 Vp-p

5.1 Vp-p

23 µs 5 IC301 wh (XBCK) (PLAY MODE)

23 µs 2 IC204 3 (IN) (PLAY MODE)

23 µs 7 IC202 6 (BCK) (PLAY MODE)

4.5 Vp-p

3.7 Vp-p

4.9 Vp-p

356 µs

356 ns

472 ns

­ 53 ­

­ PANEL Section ­
8 IC102 5 (OSCI) (FM MODE) 1 IC801 w; (OSC IN)

3.8 Vp-p

2.1 Vp-p

230 ns 9 IC100 1 (XI) (RADIO MODE)

5.2 µs

1.8 Vp-p

139 ns 0 IC700 od (X1)

5.6 Vp-p

272 ns qa IC700 ud (X1A)

5 Vp-p

31 µs

­ 54 ­

5-11.

IC PIN FUNCTION DESCRIPTION

· SERVO BOARD IC301 CXD2652AR (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 2M BIT D-RAM) Pin No. 1 2 3 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 29 30 31 32 33 34 35 36 37 38 39 Pin Name MNT0 MNT1 MNT2 MNT3 SWDT SCLK XLAT SRDT SENS XRST SQSY DQSY RECP XINT TX OSCI OSCO XTSL RVDD RVSS DIN DOUT ADDT DADT LRCK XBCK FS256 DVDD A03 A02 A01 A00 A10 A04 A05 A06 A07 A08 A11 I/O O O O O I I I O (3) O (3) I O O I O I I O I -- -- I O I O O O O -- O O O O O O O O O O O Address signal output to the external D-RAM Not used (open) Address signal output to the D-RAM (IC307) Address signal output to the external D-RAM Not used (open) Address signal output to the D-RAM (IC307) Function Focus OK signal output to the MD mechanism controller (IC501) "H" is output when focus is on ("L": NG) Track jump detection signal output to the MD mechanism controller (IC501) Monitor 2 signal output to the MD mechanism controller (IC501) Monitor 3 signal output to the MD mechanism controller (IC501) Writing serial data signal input from the MD mechanism controller (IC501) Serial data transfer clock signal input from the MD mechanism controller (IC501) Serial data latch pulse signal input from the MD mechanism controller (IC501) Reading serial data signal output to the MD mechanism controller (IC501) Internal status (SENSE) output to the MD mechanism controller (IC501) Reset signal input from the MD mechanism controller (IC501) "L": reset Subcode Q sync (SCOR) output to the MD mechanism controller (IC501) "L" is output every 13.3 msec Almost all, "H" is output Digital In U-bit CD format subcode Q sync (SCOR) output terminal "L" is output every 13.3 msec Almost all, "H" is output Not used (open) Laser power selection signal input terminal "H": recording mode, "L": playback mode (fixed at "L" in this set) Interrupt status output to the MD mechanism controller (IC501) Recording data output enable signal input terminal Writing data transmission timing input (Also serves as the magnetic head on/off output) Not used (fixed at "L") System clock signal (512Fs=22.5792 MHz) input from the oscillator circuit System clock signal (512Fs=22.5792 MHz) output terminal Not used (open) Input terminal for the system clock frequency setting "L": 45.1584 MHz, "H": 22.5792 MHz (fixed at "H" in this set) Power supply terminal (+3.3V) (digital system) Ground terminal (digital system) Digital audio signal input terminal when recording mode (for optical in) Digital audio signal output terminal when playback mode (for optical out) Recording data input terminal Playback data output terminal Not used (fixed at "L") Not used (open) Not used (open) Not used (open) Not used (fixed at "L") Not used (open)

L/R sampling clock signal (44.1 kHz) output terminal Bit clock signal (2.8224 MHz) output terminal Power supply terminal (+3.3V) (digital system)

Clock signal (11.2896 MHz) output to the PCM1717E (IC202)

­ 55 ­

Pin No. 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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

Pin Name DVSS XOE XCAS A09 XRAS XWE D1 D0 D2 D3 MVCI ASYO ASYI AVDD BIAS RFI AVSS PDO PCO FILI FILO CLTV PEAK BOTM ABCD FE AUX1 VC ADIO AVDD ADRT ADRB AVSS SE TE AUX2 DCHG APC ADFG F0CNT XLRF CKRF DTRF APCREF LDDR TRDR TFDR

I/O -- O O O O O I/O I/O I/O I/O I O I (A) -- I (A) I (A) -- O (3) O (3) I (A) I (A) I (A) I (A) I (A) I (A) I (A) I (A) -- I (A) I (A) -- I (A) I (A) I (A) I (A) I (A) I O O O O O O O O Ground terminal (digital system)

Function Output enable signal output to the D-RAM (IC307) "L" active Column address strobe signal output to the D-RAM (IC307) "L" active Address signal output to the external D-RAM Not used (open) Row address strobe signal output to the D-RAM (IC307) "L" active Write enable signal output to the D-RAM (IC307) "L" active

Two-way data bus with the D-RAM (IC307)

Digital in PLL oscillation input from the external VCO Playback EFM full-swing output terminal

Not used (fixed at "L")

Playback EFM asymmetry comparator voltage input terminal Power supply terminal (+3.3V) (analog system) Playback EFM asymmetry circuit constant current input terminal Playback EFM RF signal input from the CXA2523R (IC302) Ground terminal (analog system) Phase comparison output for clock playback analog PLL of the playback EFM Filter input for master clock of the recording/playback master PLL Internal VCO control voltage input of the recording/playback master PLL Light amount signal (RF/ABCD) peak hold input from the CXA2523R (IC302) Light amount signal (RF/ABCD) bottom hold input from the CXA2523R (IC302) Light amount signal (ABCD) input from the CXA2523R (IC302) Focus error signal input from the CXA2523R (IC302) Auxiliary signal (I3 signal/temperature signal) input terminal Not used (fixed at "H") Middle point voltage (+1.65V) input from the CXA2523R (IC302) Not used (open) Power supply terminal (+3.3V) (analog system) A/D converter operational range upper limit voltage input terminal (fixed at "H" in this set) A/D converter operational range lower limit voltage input terminal (fixed at "L" in this set) Ground terminal (analog system) Sled error signal input from the CXA2523R (IC302) Tracking error signal input from the CXA2523R (IC302) Auxiliary signal input terminal Light amount signal input from the CXA2523R (IC302) Not used (fixed at "L") Connected to the +3.3V power supply Error signal input for the laser automatic power control Filter f0 control signal output terminal Not used (open) Not used (open) Not used (open) ADIP duplex FM signal (22.05 kHz ± 1 kHz) input from the CXA2523R (IC302) Serial data latch pulse signal output terminal Writing serial data output terminal Not used (open) Phase comparison output for master clock of the recording/playback EFM master PLL

O (A) Filter output for master clock of the recording/playback master PLL

O (A) Monitor output of the A/D converter input signal

Serial data transfer clock signal output terminal

Not used (open)

Control signal output to the reference voltage generator circuit for the laser automatic power control PWM signal output for the laser automatic power control Not used (open)

Tracking servo drive PWM signal (­) output to the BH6511FS (IC303) Tracking servo drive PWM signal (+) output to the BH6511FS (IC303)

­ 56 ­

Pin No. 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Pin Name DVDD FFDR FRDR FS4 SRDR SFDR SPRD SPFD FGIN TEST1 TEST2 TEST3 DVSS EFMO

I/O -- O O O O O O O I I I I -- O Ground terminal (digital system) Input terminal for the test (fixed at "L")

Function Power supply terminal (+3.3V) (digital system) Focus servo drive PWM signal (+) output to the BH6511FS (IC303) Focus servo drive PWM signal (­) output to the BH6511FS (IC303) Clock signal (176.4 kHz) output terminal (X'tal system) Not used (open) Sled servo drive PWM signal (­) output to the BH6511FS (IC303) Sled servo drive PWM signal (+) output to the BH6511FS (IC303) Spindle servo drive PWM signal (­) output to the BH6511FS (IC303) Spindle servo drive PWM signal (+) output to the BH6511FS (IC303) Not used (fixed at "L")

EFM signal output terminal when recording mode Not used (open)

* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.

­ 57 ­

· SERVO BOARD IC302 CXA2523R (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. 1 2 3 4 to 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin Name I J VC A to F PD APC APCREF GND TEMPI TEMPR SWDT SCLK XLAT XSTBY F0CNT VREF EQADJ 3TADJ VCC WBLADJ TE CSLED SE ADFM ADIN ADAGC ADFG AUX FE ABCD BOTM PEAK RF RFAGC AGCI COMPO COMPP ADDC OPO OPN RFO MORFI MORFO I/O I I O I I O I -- I O I I I I I O I I -- I O I O O I I O O O O O O O I I O I I O I O I O Function I-V converted RF signal I input from the optical pick-up block detector I-V converted RF signal J input from the optical pick-up block detector Middle point voltage (+1.65V) generation output terminal Signal input from the optical pick-up detector Light amount monitor input from the optical pick-up block laser diode Laser amplifier output terminal to the automatic power control circuit Reference voltage input terminal for setting laser power Ground terminal Connected to the temperature sensor Not used (open) Output terminal for a temperature sensor reference voltage Not used (open) Writing serial data input from the MD mechanism controller (IC501) Serial data transfer clock signal input from the MD mechanism controller (IC501) Serial data latch pulse signal input from the MD mechanism controller (IC501) Standby signal input terminal "L": standby (fixed at "H" in this set) Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input terminal Reference voltage output terminal Not used (open) Center frequency setting terminal for the internal circuit (EQ) Center frequency setting terminal for the internal circuit (BPF3T) Power supply terminal (+3.3V) Center frequency setting terminal for the internal circuit (BPF22) Tracking error signal output to the CXD2652AR (IC301) Connected to the external capacitor for low-pass filter of the sled error signal Sled error signal output to the CXD2652AR (IC301) FM signal output of the ADIP Receives a ADIP FM signal in AC coupling Connected to the external capacitor for ADIP AGC ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2652AR (IC301) Auxiliary signal (I3 signal/temperature signal) output terminal Not used (open) Focus error signal output to the CXD2652AR (IC301) Light amount signal (ABCD) output to the CXD2652AR (IC301) Light amount signal (RF/ABCD) bottom hold output to the CXD2652AR (IC301) Light amount signal (RF/ABCD) peak hold output to the CXD2652AR (IC301) Playback EFM RF signal output to the CXD2652AR (IC301) Connected to the external capacitor for RF auto gain control circuit Receives a RF signal in AC coupling User comparator output terminal Not used (open) User comparator input terminal Not used (fixed at "L") Connected to the external capacitor for cutting the low band of the ADIP amplifier User operational amplifier output terminal Not used (open) User operational amplifier inversion input terminal Not used (fixed at "L") RF signal output terminal Receives a MO RF signal in AC coupling MO RF signal output terminal

­ 58 ­

· SERVO BOARD IC501 CXP84340-089Q (MD MECHANISM CONTROLLER) Pin No. 1 to 5 6 7 8, 9 10 11 12 13 14 to 17 18 19 20 21 22 23 24, 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Pin Name TIN3 to TIN7 LOAD EJECT NCO MDMON E-SW AG-OK ADJ-OK NCO DFCTSEL DPLLSEL EMPHSEL LOCK NCO 2M/4M NCO MNT0 MNT1 MNT2 MNT3 RESET EXTAL XTAL VSS TX TEX AVSS AVREF INIT TEMP ACNT DO-SEL EE-CS EE-CKO EE-SIO MD-SO LINKOFF I/O I/O O O O O I O O O I I I O O I O I I I I I O I -- O I -- I I I I I O O I/O O O Function Input of the 4×8 matrix test keys ("L" is always output, except in test mode) Loading motor control signal output to the motor driver (IC305) Loading motor control signal output to the motor driver (IC305) Not used (open) Power supply on/off control signal output of the MD mechanism deck section main power supply and loading motor drive (IC305) power supply "H": power on Inputs the disc loading completion detect switch (S902) detection signal "L": When completed of the disc loading operation Output of aging status in test mode "H": aging completed, "L": under aging Not used (open) Output of status when aging completed in test mode "H": aging OK, "L": aging NG Not used (open) Not used (open) Select whether defect function is used for the CXD2652AR (IC301) "H": not used this function, "L": used this function (fixed at "H" in this set) Select whether digital pll function is used for the CXD2652AR (IC301) "H": not used this function, "L": used this function (fixed at "H" in this set) Select whether emphasis signal output from pin or unilink data "H": output from pin only, "L": outputs from both pin and unilink data Not used (open) Select whether D-RAM capacitance 2M bit or 4M bit "H": 2M bit (internal D-RAM of CXD2652AR), "L": 4M bit (external D-RAM) (fixed at "L" in this set) Not used (open) Focus OK signal input from the CXD2652AR (IC301) "H" is input when focus is on ("L": NG) Track jump detection signal input from the CXD2652AR (IC301) Monitor 2 signal input from the CXD2652AR (IC301) Monitor 3 signal input from the CXD2652AR (IC301) System reset signal input from the master controller (IC700), reset signal generator (IC801) and reset switch (S900) "L": reset For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H" Main system clock output terminal (10 MHz) Main system clock input terminal (10 MHz) Ground terminal Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) Ground terminal (for A/D converter) Reference voltage input terminal (+5V) (for A/D converter) Initial reset signal input terminal (A/D input) (fixed at "H") Temperature sensor (TH501) input terminal (A/D input) Select the number of load/eject aging times (A/D input) 0H ­ 54H (30 times), 55H ­ OA9H (20 times), OAAH ­ OFFH (10 times) Select the digital output bits (A/D input) Chip select signal output to the external EEPROM device Two way data bus with the external EEPROM device Not used (open) Not used (open) Serial data transfer clock signal output to the external EEPROM device Not used (open) Not used (open) Not used (fixed at "L") Not used (open) *1 *1 Not used (open)

Mini-disc lock detection signal output to the master controller (IC700) "H": lock

Writing serial data signal output to the CXD2652AR (IC301) and CXA2523R (IC302) Unilink on/off control signal output for the SONY bus "H": link off, "L": link on

­ 59 ­

Pin No. 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 to 77 78 to 80

Pin Name UNIREQ UNCKI UNISI UNISO MD-CKO MD-SI NCO SENS CC-XINT LIMIT-IN EJT-KEY ERROR-PWM MD-RST BU-IN BUS-ON SQSY C-SW MD-LAT MD-ON DEEMP A-MUTE NCO TSTCKO TSTSO TSTMOD VCC NC
TOUT0 to TOUT3

I/O O I I O O I O I I I I O O I I I I O O O O O O O I -- -- O I/O

Function Data request signal output terminal (for SONY bus) "H": request on Serial data input from the SONY bus interface (IC600) Serial data output to the SONY bus interface (IC600) Serial data transfer clock signal output to the CXD2652AR (IC301) and CXA2523R (IC302) Reading serial data signal input from the CXD2652AR (IC301) Not used (open) Internal status (SENSE) input from the CXD2652AR (IC301) Interrupt status input from the CXD2652AR (IC301) Detection input from the sled limit-in detect switch (S903) The optical pick-up is inner position when "L" Eject request signal input terminal "L": eject on Not used (fixed at "H") Not used (open) Not used (open) Serial data transfer clock signal input from the master controller (IC700) (for SONY bus)

PWM error monitor output terminal (C1and ATER is output when test mode)

Reset signal output to the CXD2652AR (IC301) and BH6511FS (IC303) "L": reset Battery detect signal input from the SONY bus interface (IC600) and battery check circuit "H": battery on SONY bus on/off control signal input from the master controller (IC700) "L": bus on Subcode Q sync (SCOR) input from the CXD2652AR (IC301) "L" is input every 13.3 msec Almost all, "H" is input Inputs the disc loading start or disc eject completion detect switch (S901) detection signal "L": When start or eject completed of the disc loading operation Serial data latch pulse signal output to the CXD2652AR (IC301) and CXA2523R (IC302) Power supply on/off control signal output of the MD mechanism deck section main power supply "H": power on Emphasis on/off control signal output terminal "H": emphasis on Audio muting on/off control signal output terminal Not used (open) Output of clock signal for the test mode display Output of data for the test mode display Power supply terminal (+5V) Not used (fixed at "H") Output of the 4×8 matrix test keys Not used (open) Not used (open) Input of the 4×8 matrix test keys ("L" is always output, except in test mode) Not used (open) Not used (open) Not used Not used

Setting terminal for the test mode "L": test mode, "H": normal mode

TIN0 to TIN2

*1 Loading motor (M903) control Operation Terminal LOAD (pin 6) EJECT (pin 7) IN "H" "L" OUT "L" "H" BRAKE "H" "H" STOP "L" "L"

­ 60 ­

· MAIN BOARD IC700 (MASTER CONTROLLER)
MDX-C7900 Type A Type B MB90574PFV-G-114-BND MB90574PFV-G-114 MDX-C7900R MB90574PFV-G-113-BND MB90574PFV-G-113

Pin No. 1 to 7 8 9 10 11 12 13 14 15 16 17 to 19 20 21 22 23 to 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Pin Name NC VCC PLL SI PLL SO PLL CKO NOSE SW LCD SO LCD CKO BEEP DBMOD2 NC UNI SI UNI SO UNI CKO NC VOL SO VOL CKO DSTSEL0 SYSRET DSTSEL1 DMOD1 TESTIN VSS C NC BUS ON AD ON DVCC DVSS LCDANG VOL CE AVCC AVRH AVRL AVSS KEY IN0

I/O O -- I O O I O O O O O I O O O O O I O I O I -- -- O O O -- -- O O -- I I -- I Not used (open) Power supply terminal (+5V)

Function

PLL serial data input from the FM/AM PLL (IC100) PLL serial data output to the FM/AM PLL (IC100) PLL serial data transfer clock signal output to the FM/AM PLL (IC100) Detects the removal of the attaching and removing type front panel block "L": attaching Serial data output to the liquid crystal display driver (IC801) Serial data transfer clock signal output to the liquid crystal display driver (IC801) Beep sound drive signal output terminal D-BASS mode control signal output to the SM5852ES (IC201) Not used (open) Serial data input from the SONY bus interface (IC600) Serial data output to the SONY bus interface (IC600) Serial data transfer clock signal output to the MD mechanism controller (IC501) and SONY bus interface (IC600) Not used (open) Serial data output to the electrical volume (IC300) Serial data transfer clock signal output to the electrical volume (IC300) Destination setting terminal (US, Canadian models: fixed at "H", E model and MDX-C7900R: fixed at "L") System reset signal output to the MD mechanism controller (IC501) and SONY bus interface (IC600) "L": reset Destination setting terminal (US, Canadian models and MDX-C7900R: fixed at "L", E model: fixed at "H") D-BASS mode control signal output to the SM5852ES (IC201) Setting terminal for the test mode "L": test mode (normally fixed at "H") Ground terminal Connected to capacitor (for coupling) Not used (open) Bus on/off control signal output to the MD mechanism controller (IC501) and SONY bus interface (IC600) "L": bus on Power supply on/off control signal output for the A/D converter "L": power on Power supply terminal (+5V) (for D/A converter) Ground terminal (for D/A converter) Output signal for the LCD view angle adjustment "H": When front panel is full open Chip enable signal output to the electrical volume (IC300) 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) OFF, SOURCE, SEEK/AMS > M + . m ­ , SOUND, SHIFT, 1, 2, 3, 4 keys input (LSW801 to LSW804 and LSW806 to LSW811)

­ 61 ­

Pin No.

Pin Name

I/O

Function Key input terminal (A/D input) MDX-C7900: Z, LIST, DSPL, 10, 9, 8, 7, 6, 5 keys input (LSW812 and LSW814 to LSW821) MDX-C7900R: Z, DSPL, LIST PTY, AF/TA, 10, 9, 8, 7, 6, 5 keys input (LSW812 to LSW821) Key input terminal (A/D input) Not used (fixed at "L") Rotary remote commander shift key A/D input terminal D-BASS switch (LSW805) input terminal (A/D input) Not used (fixed at "L") Multi path input from the RDS decoder (IC102) Used for the MDX-C7900R only FM and AM (MW/LW) signal meter voltage detection input from the FM/AM tuner unit (TU1) Power supply terminal (+5V) Muting control signal output to the power amplifier (IC500) "H": muting on Standby control signal output to the power amplifier (IC500) "L": standby, "H": amp on Illuminate line detect signal input for the auto dimmer control Dimmer is present at input of "L" Mini-disc lock detection signal input from the MD mechanism controller (IC501) "H": lock Emphasis control signal output to the D/A converter (IC202) "H": emphasis on Audio line muting on/off control signal output terminal "H": muting on RDS AF playing attenuate signal output terminal Not used (open) Tuner signal (FM and AM) muting on/off control signal output "H": muting on Ground terminal Accessory detect signal input terminal "L": accessory on RDS AF seek control signal output terminal Used for the MDX-C7900R only Not used (open) Data transmit completed detect signal input from the RDS decoder (IC102) Used for the MDX-C7900R only Not used (open) Serial data input from the RDS decoder (IC102) Used for the MDX-C7900R only Serial data transfer clock signal input from the RDS decoder (IC102) Used for the MDX-C7900R only Rotary remote commander shift key A/D input terminal Sub system clock output terminal (32 kHz) Sub system clock input terminal (32 kHz) Not used (open) Battery detect signal input from the SONY bus interface (IC600) and battery check circuit "H": battery on Not used (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" Telephone muting signal input terminal At input of "L", the signal is attenuated by ­20 dB 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" Seek control signal output to the FM/AM tuner unit (TU1) (AM mode: used for IF count output, SD request, AGC cut etc., FM mode: used for SEEK, BTM, AF playing SD speed up etc.) 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)

47

KEY IN1

I

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68, 69 70 71 72 73 74 75 76 77, 78 79 80

KEY IN2 RC IN0 D-BASS IN NC MPDH (MTP)
S METER (VSM)

I I I I I I -- O O I I O O O O -- I O O I O I I I O I O I O I I

VCC AMP ATT AMP ON ILL IN LOCK IN EMPH ON AU ATT AF ATT TU ATT VSS ACC IN AF SEEK NC DAVN NC RDS SI RDS CKI RC IN1 X1A X0A NC BU IN NC KEYACK TEL ATT

81

ST IN/MONO

I/O

82 83 84

SEEKOUT SD IN NC (MONO)

O I I

­ 62 ­

Pin No. 85 86 87 88 89 90 91 92 93 94 95 96 97 to 99 100 101 102 103 104 105 106 107

Pin Name PLL CE HSTX MD2 MD1 MD0 RESET VSS X0 X1 VCC PW SEL POL MONO NC BAND (9K-10K) NC RAMBU NC LCD CE FLASH W REIN0 REIN1 LAMP ON (ILL ON) PW ON FM ON TUN ON NC VSS NC

I/O O I I I I I -- I O -- I I O I O I O O I I I Hardware standby input terminal

Function PLL serial chip enable output to the FM/AM PLL (IC100) Not used (open) Mode selection input terminal (fixed at "L") Mode selection input terminal (fixed at "H") Mode selection input terminal (fixed at "H") System reset signal input from the reset signal generator (IC801) and reset switch (S900) "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) Power select switch (S700) input terminal "L": on (operation mode), "H": off (halt mode) Polar monaural detection signal input terminal Not used (open) Frequency select switch (S701) input terminal "H": MW 9k step/FM 50k step, "L": MW10k step/FM 200k step Used for the E model only Not used (open) Internal RAM reset detection signal input from the RN5VD23AA (IC802) Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 100 msec after reset Not used (open) Chip enable output to the liquid crystal display driver (IC801) Fixed at "H" in this set Rotary encoder (EN801) input for volume/bass/treble/balance/fader control Rotary encoder (EN801) input for volume/bass/treble/balance/fader control Power supply on/off control signal output terminal at the illumination and liquid crystal display driver (IC801) "H": power on At power select switch (S700) on mode: "H" output at the accessory on At power select switch (S700) off mode: "H" output at the power on Main system power supply on/off control signal output to the BA3918 (IC800) "H": power on FM system power supply on/off control signal output to the BA3918 (IC800) "H": FM on Tuner system power supply on/off control signal output to the BA3918 (IC800) "H": tuner on Not used (open) Ground terminal Not used (open) Not used (open)

108

O

109 110 111
112 to 118

O O O O -- O

119 120

­ 63 ­

SECTION 6 EXPLODED VIEWS
NOTE: · -XX and -X mean standardized parts, so they may have some difference from the original one. · Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts Color Cabinet's Color · Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · 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 the electrical parts list. The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Les composants identifiés par une marque 0 sont critiquens pour la sécurité. Ne les remplacer que par une pièce portant le neméro spécifié.

(1) GENERAL SECTION

12
MG-164KT-138

11 14 7 9
#3 F1

#3

10 6

17 8

#2

16

5 4 3 15 13
C7900

2

#2

#1

#2

1
Front panel section
Ref. No. 1 1 2 3 4 * * * * 5 6 6 6 Part No. 3-919-344-51 3-919-344-61 3-919-343-01 3-023-606-01 X-3367-636-1 X-3373-358-1 A-3294-393-A A-3294-394-A A-3294-410-A Description DOOR (MD) (C7900) DOOR (MD) (C7900R) SPRING (DOOR), TORSION PANEL, SUB LOCK ASSY Remark Ref. No. * 9 10 11 * 12 13 13 14 * 15 * 16 * 17 F1 Part No. 3-023-604-01 3-376-464-11 3-932-860-01 X-3373-362-1 1-776-207-71 Description

13
C7900R
Remark

HEAT SINK SCREW (+PTT 2.6X6), GROUND POINT SCREW (2.6X4) (C TIGHT), +PTT COVER ASSY CORD (WITH CONNECTOR) (POWER) (C7900)

* 6 * 7 * 8

CHASSIS ASSY MAIN BOARD, COMPLETE (C7900R: AEP, UK) MAIN BOARD, COMPLETE (C7900R: German) MAIN BOARD, COMPLETE (C7900: US, Canadian) A-3294-412-A MAIN BOARD, COMPLETE (C7900: E) 3-022-317-01 BRACKET (AMP) 3-011-078-01 BRACKET (POWER IC)

1-776-527-71 CORD (WITH CONNECTOR) (ISO) (POWER) (C7900R) 3-011-999-01 CUSHION (MD) 3-014-156-01 SHEET (INSULATING) 3-355-209-01 PLATE (B), GROUND 3-937-122-01 HEAT SINK 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)

­ 64 ­

Ver 1.1

(2) FRONT PANEL SECTION

68
not suplied (KEY board)

67 58 57 56 55 63 59 60 61
LCD801

66 65 64
#4

54 53 62
C7900

69

52

70

C7900R

51 70

Ref. No. 51 52 52 53 54 55 56 57 57 58 59 60

Part No.

Description

Remark

Ref. No. 61 62 * 63 * 64 * 65 * 66 * 67 68 69 70

Part No. 3-023-618-01 3-023-619-01 3-023-610-01 3-023-621-01 3-023-624-01 3-023-609-01 3-023-608-01 3-023-605-01 3-023-625-01 3-023-622-01

Description PLATE (L), LIGHT GUIDE PLATE (R), LIGHT GUIDE PLATE (LCD), GROUND SHEET (LCD) ILLUMINATOR (LCD)

Remark

3-023-611-01 BUTTON (10KEY) (OFF. SHIFT. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10) X-3375-315-1 PANEL ASSY, FRONT (C7900) X-3375-409-1 PANEL ASSY, FRONT (C7900R) 3-023-617-01 BUTTON (RELEASE) 3-008-667-01 SPRING (RELEASE) 3-023-626-01 3-023-612-01 3-023-613-01 3-023-613-31 3-023-615-01 BUTTON (SOURCE) KNOB (VOL) KNOB (AMS) (C7900) KNOB (AMS) (C7900R) RING, LIGHT GUIDE

PLATE (LCD), LIGHT GUIDE HOLDER (LCD) PANEL, BACK KNOB (D) BUTTON (EJ) (Z. PTY. AF/TA. DSPL) (C7900R)

3-023-629-01 BUTTON (MODE) 3-023-616-01 BUTTON (SOUND)

70 3-023-627-01 BUTTON (EJ) (Z. LIST. DSPL) (C7900) LCD801 1-803-111-11 DISPLAY PANEL, LIQUID CRYSTAL

­ 65 ­

(3) MECHANISM DECK SECTION-1 (MG-164KT-138)

112

#5

113 109 111
#6

114 108 115

107

110

106

116 117

118 105 104 113
#6

111 103 105 103 104 102

101
#5

Ref. No. * 101 * 102 103 104 105 * 106 107 108 * 109

Part No. A-3313-612-A X-3369-440-1 3-919-296-01 3-921-111-01 3-919-273-01 X-3369-444-1 3-919-319-01 3-919-320-01 3-919-436-01

Description SERVO BOARD, COMPLE CHASSIS ASSY, MD SPRING (FL), TENSION SPRING (FL2), TENSION DAMPER, OIL HOLDER ASSY SPRING (HOLDER) SPRING (SUB HOLDER) CUSHION (EJ)

Remark

Ref. No. * 110 111 * 112 113 * 114 115 116 * 117 * 118

Part No. 3-919-280-01 3-919-281-01 X-3369-441-1 3-342-940-01 X-3369-445-1 3-919-274-01 3-925-034-01 X-3369-443-1 3-919-279-01

Description LEVER (LOCK R) SPRING (CHKG) COVER ASSY, MD WASHER (M) LEVER (LE) ASSY SPRING (LE) ROLLER (GLE) ARM ASSY, CHUCKING LEVER (LOCK L)

Remark

­ 66 ­

(4) MECHANISM DECK SECTION-2 (MG-164KT-138)
158 157

161 160 179 161

162 177 161 163 164
#6

166

156

159
#10

155

#10

168 167
M903

M901

153 154
#9 #7 #9

170

176 172 171
#8 M902

173
#8

#7

175 169

152

151 174
The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le neméro spécifié. Remark

178

Ref. No. 151 152 * 153 * 154 * 155 156 157 158 159 160 161 162 163 164 166 167

Part No. 1-654-693-11 A-3309-892-A 3-919-297-01 3-919-284-01 X-3369-442-1 3-919-339-01 3-919-317-01 4-926-562-01 3-919-313-01 3-919-316-01 3-342-940-01 3-919-315-01 3-919-314-01 X-3369-446-1 3-919-282-01

Description SENSOR FLEXIBLE BOARD SENSOR BOARD, COMPLETE RETAINER (SP) BASE (SL) CHASSIS (OP) ASSY SPRING (GLE) GEAR (LE) WASHER, STOPPER WHEEL, WORM GEAR (R) WASHER (M) GEAR (S) GEAR (F) LEVER (S) ASSY SPRING (RACK), TENSION

Remark

Ref. No. * 168 0 169 170 * 171 * 172 173 * 174 * 175 176 177 178 179 M901 M902 M903

Part No. 3-919-312-01 8-583-037-02 X-3373-213-1 3-919-294-01 3-919-293-01 3-010-091-01 3-920-537-01 3-919-283-01 3-703-816-32 3-924-721-01 2-626-617-01 3-701-437-01 A-3301-407-A A-3291-190-A A-3291-191-A

Description BRACKET (MOTOR) OPTICAL PICK-UP KMS-241A/J2RP SCREW ASSY, FEED BEARING (SL) SHAFT (SL) SPRING (SL FEED) SHAFT (SL2) BRACKET (SL) SCREW (M1.4X1.6), SPECIAL HEAD SPRING (B-T) SCREW (2X8) WASHER MOTOR ASSY, SP (SPINDLE) MOTOR ASSY, SL (SLED) MOTOR ASSY, LO (LOADING)

X-3369-447-1 RACK ASSY

­ 67 ­

KEY

SECTION 7 ELECTRICAL PARTS LIST
· Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · SEMICONDUCTORS In each case, u: µ, for example: uA. . : µA. . uPA. . : µPA. . uPB. . : µPB. . uPC. . : µPC. . uPD. . : µPD. . · CAPACITORS uF: µF · COILS uH: µH The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Les composants identifiés par une marque 0 sont critiquens pour la sécurité. Ne les remplacer que par une pièce portant le neméro spécifié. When indicating parts by reference number, please include the board.

NOTE: · 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 and -X mean standardized parts, so they may have some difference from the original one. · RESISTORS All resistors are in ohms. METAL: Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F: nonflammable · Abbreviation Type A: See page 3 for Type A/B Discrimination. Type B: See page 3 for Type A/B Discrimination.

Ref. No.

Part No.

Description KEY BOARD **********

Remark

Ref. No.

Part No.

Description < IC >

Remark

IC801 * * * * * 3-023-608-01 3-023-609-01 3-023-610-01 3-023-621-01 3-023-624-01 HOLDER (LCD) PLATE (LCD), LIGHT GUIDE PLATE (LCD), GROUND SHEET (LCD) ILLUMINATOR (LCD) < CAPACITOR > C802 C803 C804 C805 C806 C811 C812 C813 C814 C815 1-163-809-11 1-164-489-11 1-164-489-11 1-164-489-11 1-163-809-11 1-163-009-11 1-163-009-11 1-163-009-11 1-163-009-11 1-163-009-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP < CONNECTOR > CNP801 1-764-423-11 PIN, CONNECTOR 12P < DIODE > D802 D803 D804 D806 D807 D808 D811 D812 D813 D814 D815 D816 D817 D819 8-719-056-83 8-719-056-83 8-719-056-83 8-719-977-00 8-719-977-00 8-719-978-69 8-719-987-45 8-719-987-45 8-719-987-45 8-719-987-45 8-719-987-45 8-719-987-45 8-719-987-45 8-719-977-00 DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE UDZ-TE-17-6.8