Sony Cfd 8 Service Manual

							11
CFD-V8
•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2 455kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 520kHz
CT4 1,780kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 620kHz
CT3 1,400kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1 10.7MHz
FM FREQUENCY COVERAGE  ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 86.5MHz
CT2 109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 86.5MHz
CT1 109.5MHz
Adjustment Location : Main board (See page 12)CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
Focus Bias Check
1. Connect the oscilloscope between TP (RF) and GND on CD
board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the 7 button two times (LPC ON).
4. Confirm that the oscilloscope waveform is as shown in the fig-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
•RF Signal Reference Waveform (eye pattern)
When observing the eye pattern, set the oscilloscope for AC range
and raise certical sensitivity
RF level
0.7 – 1.0 Vp-p (LPC ON)
1.0 – 1.4 Vp-p (LPC OFF
)
VOLT/TV : 200mV
TIME/DIV : 500 nS
CD SECTION
How to put the set into CD Test Mode
1. Set the function switch to power off.
2. Set the function switch to CD.
3. Set Test mode by momentarily shorting both of the IC801 51pin
to GND. (Shorting the terminals momentarily is sufficient).
The set is into CD test mode (88 is displayed).
4. Turn the power off to release test mode.
R812R811
R809
R810
  R851
C844
C
8
C8
4
R815
R814
R813
 
C801
 
IC801
R816
R C810
 
C317
W321
C802
GND51pin
TEST mode : momentarily short
[MAIN BOARD] (Conductor side)
IC701
 
R729R708 C736
C734
R709
C705 R704 R702
R711
R710
R703R705R701C703 TP
(RF)C731R706
JC703 
C743C7
C742
  
C707
 
  
9 3
8
732
JW708
W709
J
C74
oscilloscope
(AC range)
[CD BOARD] (Conductor side)(GND) TP (RF) 
						

							12
CFD-V8
Adjustment Location :
[MAIN BOARD]
(Component side)
[MAIN BOARD]
(Conductor side)
CT1 : FM Tracking Adjustment
CT3 : AM Tracking AdjustmentL3: AM Tracking Adjustment
T2 : AM IF AdjustmentT1 : FM  IF Adjustmen
t
L2 : FM Frequency Coverage Adjustment
CT4: AM Frequency 
        Coverage Adjustment CT2 : FM Frequency
          Coverage Adjustment L4 : AM Frequency 
       Coverage Adjustment
L1 : FM Tracking Adjustment 
						

							13
CFD-V8
Pin No. Pin name I/O Description
1 to 4 NC — Not used (open)
5IC—Connect to ground.
6XT1 I Connect to ground.
7XT2 — Not used (open)
8VDD — Power supply terminal (B+ 3.3 V)
9VSS — Ground terminal
10 CL1 I Oscillator terminal (4 MHz)
11 CL2 — Oscillator terminal (4 MHz)
12 RESET I Reset signal input
13 NC — Not used (open)
14 SYNC–R — Not used (open)
15 CE O Chip enable signal output
16 C–RST O Reset signal output to the LC78645E (IC701)
17 CAPH — Charge pump capacitor terminal
18 CAPL — Charge pump capacitor terminal
19 to 21 VLC0 to 2 — Capacitor connect terminal
22 to 25 COM0 to 3 O LCD common drive output
26 to 43 S0 to 17 — Not used (open)
44 to 48 S18 to 22 O LCD segment drive output
49 S23 — Not used (open)
50 ENTER I Key (ENTER) input
51 MODE I Key (MODE) input
52 PLAY I Key (H PLAY) input
53 FR I Key (l FR) input
54 FF I Key (L FF) input
55 STOP I Key (s STOP) input
56 DOOR I Door open/close input
57 WRQ I Command signal input
58 TEST I Test mode signal terminal input (TEST: L)
59 MUTE O Mute signal output
60 FSEQ I Frame SYNC signal input
61 DRF I DRF (Defect RF) input
62 DO O Serial data output
63 DIN I Serial data input
64 CLK I Clock signal input
SECTION 6
DIAGRAMS
6-1. IC PIN FUNCTION DESCRINTION
IC801   µPD789316GK-503-9ET  SIGNAL PROCESSOR, D/A CONVERTER, LCD DRIVE, SYSTEM CONTROL 
						

							14
CFD-V8
• Circuit Boards Location
INLET board
BATT (R) board
BATT (L) board
FM SW boar
d
MAIN board
CD board CONTROL board VOLUME boardPOWER boardPRE board 
						

							CFD-V8
15
15
D1
D2
T301 S1
Q1
FM
FRONT-END
AM
FRONT-END FM/AM
FRONT-END
L1
FM
RF
L2
FM
OSC
L3
FERRITE-ROD ANTENNA
L4
AM
OSC
ANT1
FM
TELESCOPIC ANTENNA
FM OSC
AM OSC T2
CF1CF2
T1
FM
IF IN
IF INAM L OUT
R OUT R-CH
LOGIC
ALC
1
MIC
DET MUTE
PB AMP
PB AMP
RECAMP(26dB) MONITOR
AMP
TAPE BUFFER
MIC AMP
MUTE PRE/REC
AMP
BIASOSC
(7dB)
OUT
REG
22
24
13
5
4 621 15
17 20
Q301 L.LO
L.RAD
LINE
TAPE
REF REC
L.RO L.IN
HEAD
HRP901
RECORD/
PLAYBACK
ERASEHEAD
HE901 AM IF
RF
IN
FM FREQUENCY CT2,L2 CT1,L1
CT3,L3 COVERAGE
AM FREQUENCY L4,CT4 COVERAGE
TRACKING AM TRACKING
FM
IN
CT1
CT2
CT3
CT4 CV1-4CV1-3
CV1-2
CV1-1
TU +6VTU +6V FM DET
AM DET MPX
FM IF
QUAD
TU +6V
MPX IN
DET OUT
LPF1
LPF2
TU +6V
FM MODESTEREO MONO
CD
TAPE FM
CD
TAPE L.OUT
L.OUTSECTION
(Page 16)
SECTION
(Page 16) MAINMAIN
SECTION
(Page 17) CD L-CH
CD R-CH TU IN L
CD IN L
R-CH
CD
AM
TU +6V
L.LINE
TU +6V
-1
-2
S301
REC
PB
IF AMP,DET,FM MPX
MIX
FM RF OUT
AM RF
IC1
IC301
6-2. BLOCK DIAGRAMS   –TUNER/TC  SECTION–
• R-CH is omitted : Same as
L-CH
• Signal path.
F : FM
f : AM
E : PLAY
a : REC
J : CD 
						

							16
16
CFD-V8
CNJ901
AC IN
Q409 M601F901
D302
D303 D304 D309
D314
S402
S406
S404
S405
S401
S403
S801
MOTOR
SWITCH
CD DOOR
(OPEN/CLOSE)
MEGA BASS S355
OFF ON
MUTE
RV352
STANDBYSWITCHPOWER
AMP
R-CH J301
SPEAKER
SPEAKER (R-CH)(L-CH)
T901
POWER
TRANSFORMER
Q101
R-CH
D308 POWER
SWITCH
OPR/BATT
B+
(+8.9V)
VOLUME
D310SP101
SP201
DRY BATTERYSIZE D
(IEC DESIGNATION R20)
6PCS,9V
MOTOR
CAPSTAN/REEL
(MD POWER)
S601
S351-1
FUNCTION
CD
SWITCHINITIAL
Q401
+6.9V REG
Q309,Q311
POWER
SWITCH
Q311,312
+3.3V REG
Q310,
Q402,Q405VOLTAGE
DET
TU +6V
TAPE +6V
CD +6V
CD+ 3.3V
POWER AMP
CD
TAPE
FM
SECTION
(Page 15)
TUNER/TC Q801
RESET
CD +3.3V
STOPFFFR
PLAY MODE ENTER
COM0
COM3
S18S22
CL1
CL2
RESET
DOOR
_
_22
2548
44
_
_
DIGITAL SIGNAL
LCD DRIVE,PROCESSOR,
SYSTEM CONTROL
PLAY MODEENTER
DISPLAY
LIQUID
CRYSTAL LCD401
S0-S4
COM0-3
RESET
SECTION
(Page 17) CD SECTION
(Page 15)
TUNER/TC
L.OUT
-1
-2
D901-904
(4MHz)
CD CONTROL 9V
AC
4.5V
IC304
IC401
IC801(1/2)
AM FM
•R-CH is omitted : Same as L-CH
• Signal path.
F : FM
6-3. BLOCK DIAGRAMS   –MAIN  SECTION– 
						

							CFD-V8
17
17
X701
33.86MHz
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
MUTE
DRIVER
SLED/SPINDLE MOTOR DRIVE,
TRACKING/FOCUS COIL DRIVE
LASER
POWER
CONTROL
VC CD RF/
SYSTEM SERVO
PROCESSOR
MUTE
T+
T-
F+
F-
SL+
SL-
SP+
SP-
-
+
- +
M701 SLED
MOTOR M702
SPINDLE MOTOR
S701
(LIMIT) LD
G
PD
VR
TRACKING COIL
FOCUS COIL VC
A
B
C
D
E
F
OPTICAL PICK-UP
BLOCK
SW
LD
PD
LCD DRIVE,
SYSTEM CONTROL
Q701
FIN1
FIN2
LDD
VREF
LDS
VREF
DIGITAL SIGNAL
TIN
FIN
SLIN
SPIN
CE
CLK
DO
DIN
WRQ
C-RST DRF
FSEQ
PROCESSOR,
TDO
FDO
SPDO
SLDO
CONT4
CONT5
CONT3CONT2CONT1
XOUTXIN
CE
CLDI
DO
DRF
RCHO
LCHO
FSEQ
EFMIN
RF DIGITAL
ERROR
FILTER/
CORRECTION D/A
REF
TIN1
TIN2 +
-
+ SERVO
CONTROL PURPOSE
PORT INTERFACERES
WRQ
APC
TE
FE
RESET CD L-CH
CD R-CH SECTION
(Page 15)
SECTION
(Page 16) TUNER/TC
MAIN
RST
IC701
IC702 IC801(2/2)
COMMAND
(KSS-213C)
•
Signal path.
J : CD
6-4. BLOCK DIAGRAMS   –CD  SECTION– 
						

							18
18
CFD-V8
234567891
A
B
C
D
E
F
RV352
VOLUME
S351
FUNCTION
TAPE CD/RADIO OFF
 AM
 FM
 CD
BOPR/BATT
-1   -2
C
D
S801
A
R224 C224 R223
R123
C124
R124
C223
KH307
C123S355
RV352
KH1
 
R386
D1
D2
 
R812
R811
R809 R810
 
D302
C851
R805R851R819
C844
C805R806
Q801
C842 C841
C843
R818
R815
R814
R813
 
C801
 
IC801
R816
R801
C1
JC5
R3
R20
C6C5
R30 R9
C27
C20C25 C22
C3
C24R1
C19
C10C30C2
JC6
R2 R8
R4
C17 C15Q1
JC7
R319
R11
D303
D304 R315
D309
D314
R314
R153
D311
R415
R404
R401
R416
R417
R254
R403
R402
Q402
R418
R154
R251 R151 C155
C255
C343
C349
C320Q312
C346
R360
R349
R353
R352
R351
C345 D308
R345
C252
C152 R253
JC310
Q101Q201
C810
C891
R344
R346
R340
R341
R342
D301
JC302
JC303JC305
JC306
 
JC2
JC1
R354
 
JC401
 
  D306
R348
R5
 
KH902
IC304
 
S351
CNP305
CNP304
Q401
Q405
Q409Q311
Q310
C348
C314 C317 C347C341
C401
C402
C253 C316 C254
C154 C153
C351
C156 C256
D310
L2
KH306
Q309
JW301
JW302
JW303
JW304
JW305
JW306
JW308
JW309
JW310
JW311
JW312
JW313 JW314
JW315 JW316JW317
JW318
JW319
JW321
JW322
JW323
JW324
JW325
JW326
JW327
JW329
JW330
C802
L4
C21
IC1
CF2
CF1
T1 KH801
CND,AUS,TW
AEP,UK,CET,IT,KR,SP
AEP,UK,CET,IT,KR,SP
AEP,UK,CET,IT,KR,SP
JW335
JW334
C8
C9
C18
JW333
C13 JW332
C23 L1
JW331
C4
C14
C7
C11
C12 C32
JW328
T2
KH2
IC401
CN802
CN801
CNP303
JW307
JW341
C171
C271
CV1
ANT1 FM
TELESCOPIC ANTENNA
11
(11)
1-861-375-
FM SW BOARD
11
(11)
1-861-372-
VOLUME BOARD
S355
MEGA BASS
rOFF
TRON
CONTROL BOARD
CN401
(Page 22)J301
i SP101
SPEAKER (L-CH)
SP201
SPEAKER (R-CH)
11
(11)
1-861-370-
B
C
E
E
C
B
+
-
MM601
CAPSTAN/REEL MOTORS601
(MD POWER)
INLET BOARD CNP902
(Page 22)
1 41 2 3 4
1
4
PRE BOARD
CNP303
(Page 22)
CV1-4
CV1-2
CV-1
CV1-1CV1-3
CT1
CT3CT4
CT2
L3
AM/LW
FERRITE-ROD ANTENNA
S801
CD DOOR
(OPEN/CLOSE)
MAIN
 BOARDCD BOARD
CNP702
(Page 25)
S1
FM MODE
STEREO
tMONO
6-5. PRINTED WIRING BOARDS – MAIN SECTION –  z Refer to page 14 for Circuit Boards Location.
Note:
• X : parts extracted from the component side.
•
f: internal component.
• : Pattern from the side which enables seeing.
• Abbreviation
CET : East European & Russian
IT : Italian
SP : Singapore
AUS : Australian
TW : Taiwan
KR : Korean
CND : Canadian
 D1 A-1
 D2 A-1
 D301 D-8
 D302 E-6
 D303 D-4
 D304 D-4
 D306 D-9
 D308 C-5
 D309 D-4
 D310 E-7
 D311 D-7
 D314 E-4
 IC1 C-3
 IC304 E-7
 IC401 D-8
 IC801 D-5
 Q1 B-3
 Q101 E-7
 Q201 E-7
 Q309 D-7
 Q310 C-5
  Q311 C-6
 Q312 C-6
 Q401 E-9
 Q402 E-8
 Q405 E-8
 Q409 C-8
 Q801 D-5
Ref. No. Location
z Semiconductor
   Location
 : Uses unleaded solder.
V
er  1.2 
						

							CFD-V8
19
19
6-6. SCHEMATIC DIAGRAMS – MAIN SECTION (1/3) –
R4
C17 L4
C22 C15
L1
C24 R2
CF2
CF1
C3 R30
T1
C30
C2
R8R9
C10
C27
R11
C1
R1 ANT1
IC1 C8
C9
T2 S1
Q1
C21
C36
C6C5
C23 R3
C11 C12C32
L2C7
D1 D2 JC1
JC2
JC5
JC6 JC7
R20
KH2KH1
C18
C13 C14
C4
C25
R5
C20
C19
3.3k
0.1
1 0.1
0.01 330
0.01 220
2p
10p
22k22k
4700p
4700p
10k
1000p
220 FM
TELESCOPIC ANTENNA
TA2111N 4.7
50V
4.7
50V
KRA302-RTK
SWITCH
4.7p
10p
5p10p
10
50V 3.3k
10p 10p4.7p
1SS133T-77 1SS355T-77 0
0
0
0 0
1k
4P4P
1
50V
0.47 50V 4.7
50V
22
25V
0.001
100
TU.L
TU.GND TU.R
TU +B FM
S-GND
ISS1
*
*
*
FM-RF
IN
AM  LOW
CUT
AGC
VCC
AM  IF
IN
FM IF
IN
GND
QUAD R-OUTL-OUT
LPF1
LPF2 AFC
AM
 OSC
FM
 OSC
FM
 RF
OUT
AM
 RF
IN
TUN  MIX
OUT
LED
ST  M
PX 
DET  RF 
RF
GND
VCC
OUT IN
LED CT4CV1-4 CT2
CV1-2 CT1
CV1-1
CT3
CV1-3
CND,AUS,TW
AEP,UK,CET,IT,KR,SP
*
C7
2.2P
4.7P
AEP,UK,CET,IT,KR,SP
CND,AUS,TW
AEP,UK,CET,IT,KR,SP
*
C19,20
0.022 0.01
AEP,UK,CET,IT,KR,SP
(Page 20)
1
V
er  1.2 
						

							20
20
CFD-V8
6-7. SCHEMATIC DIAGRAMS – MAIN SECTION (2/3) –
R124
C123 C124
C224
R224
R123 R223
C223
KH307 RV352(2/2)
RV352(1/2)
D
314
D
309
D 304
D
303
R315
R314C317
D
302
R319 Q201
Q311 Q312 JC401
C343
C347
D
311
C346 R360
C345
D308
C348
R349 C320
R344
R417
R418
C341
CNP304 R403
C401 R401
R402
R404
C349
KH902
C255
C154
C254C253
C155
C351
R253 C256
C152C252
R 153
C156 CNP303
C171
C271 R151
R251 IC304
S601 M601 IC401
KH306
C153
JC310
C314 Q101
Q310 Q309
Q401
Q409 D310
Q405
C402
D301
JC305
ICP301 JC302JC303
JC306
Q402
R346 R
345
R342
R 341
R 340
R386
R416 R154
R254
J301
C316
R415
R351
R352
R 353
R 354
D306
CNP305
R348
6.8k
0.4750V 4700p
4700p
6.8k
1k 1k
0.47
50V
5P 20kB
20kB
1SS355TE-17 1S
S355TE-17
1SS355TE-17 1SS355TE-17
1k
4.7k22
25V
1SS355TE-17
4.7k KRC410-RTK
KTB1241Y-AT KRC405RTK 0
0.01
220
10V
KD Z 7.5-R
TK
0.01 100k
0.01
KTZ 3.9-RTK 100
10V
330 0.022
220
10k
10k
330016V
4P 22k
100
10V 100k
10k
1k
10000p
4P
0.1
470
10V 470
10V 47
10V
0.1
47
10V
470
47
10V
1000p 1000p
470
47
10V 4P
10
50V
10
50V 4.7k
4.7k BA5417
MM1468XD
5P
47
10V
0
47
10V KRC410-RTK
KTC3203Y-AT 2SD2396K
KTA1266-GRINITIAL
SWITCH
KTC3203Y-ATMOTOR
SWITCH L-34HD
KTA1266-GR-AT
10
50V
1SS355TE-17
0
00
0
KRC402
1k1k
3.3k
3.3k
3.3k
3.3k
4.7k 100
100
1
50V
3.3k
680
680
680
680
1SS355TE-17
10P
1k
TU.L
TU.GND
TU.R
TU +B FM
L-O
UT
R
-O
UT
D .G
ND
C D  3.3V
CD
 6V
A U  M
UTE
P
.G ND
S-GND
UCO
M-G
ND
TU -GND
TU  +B
ISS1
(Page 23)
(Page 19)
(Page 21) (Page 23)
1
2