Sony CFD-G55 Service Manual ▷ View online
36
CFD-G55
5-18. IC Pin Function Description
• IC801 µPD789478GC-8BT
System Control (MAIN Board)
Pin No.
1, 2
3
4
5
6 to 9
10 to 27
28, 29
30
31
32
33
34
35
36
37
38
39
40
41
42
43 to 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
I/O
—
I
I
I
O
O
—
O
O
O
O
O
O
I/O
O
—
I
I
I
I
I
I
—
I
I
I/O
I
I
I
O
O
O
O
I
O
I
O
O
O
O
O
O
O
O
I
I
O
—
—
I
Pin Name
NC
VLC2
VLC1
VLC0
COM0 to COM3
SEG0 to SEG17
NC
WOOFER ON/OFF
WOOFER 1/2
ISS1
ISS2
A-MUTE
SCL
SDA
INIT
AVDD
REC
C-DOOR
SIMUKE
MODE
KEY-1 to KEY-3
C-FSEQ
AVSS
RMC
REG CHK
WP
TC-PLAY
WRQ
C-DO
C-DI
C-CLK
C-CE
R-MUTE
C-DRF
C-RES
R-COUNT
R-CLK
R-DATA
R-CE
V-CLOCK
V-DATA
P-CON
TAPE
VL
NC
XT1
XT2
VDD
VSS
X1
Description
Not used (open)
LCD bias power supply
LCD bias power supply
LCD bias power supply
LCD common signal output
LCD segment signal output
Not used (open)
Woofer on/off control signal output
Woofer 1/2 signal output
ISS-1 signal output (not used)
ISS-2 signal output (not used)
Audio muting signal output
Clock output to the EEPROM
Data input/output with the EEPROM
Initialization setting signal output
Power supply (A/D converter)
REC signal input from the REC/PB switch (S301) “H”: record mode
Detection signal input from the CD OPEN switch (S701) “L”: CD door close
Destination setting signal input
Model setting signal input
Key signal input from the function keys
CD FSEQ synchronizing signal detection signal input from the IC701
Ground (A/D converter)
Data input from the remote control receiver
Power supply voltage monitoring signal input
WAKE UP reading signal output (interrupt signal in input mode)
TAPE PLAYsignal input from the TC PLAY switch (S321)
CD WRQ signal input from the IC701
CD DSP data input from the IC701
CD DSP data output to the IC701
CD clock output to the IC701
CD chip enable signal output to the IC701
Radio muting signal output “L”: active
CD DRF signal input from the IC701
CD system reset signal output to the IC701
Radio IF count signal input from the IC2
Radio clock signal output to the IC2
Radio data output to the IC2
Radio chip enable signal output to the IC2
Clock signal output to the sound processor (IC321)
Data output to the sound processor (IC321)
Power control signal output
TAPE function signal output to the IC301
VL control signal output “L”: active
Not used (connected to ground)
Sub system clock oscillator input (32.768kHz)
Sub system clock oscillator output (32.768kHz)
Power supply
Ground
Main system clock oscillator input (4.19MHz)
37
CFD-G55
Pin No.
75
76
77
78
79
80
I/O
O
I
O
O
O
O
Pin Name
X2
RST
CD
LED CONT
W-LED1
W-LED2
Description
Main system clock oscillator output (4.19MHz)
System reset signal input
CD function signal output “L”: active
LED control signal output
Woofer1 LED control signal output
Woofer2 LED control signal output
NOTE:
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
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.
in the exploded views are not supplied.
•
Accessories are given in the last of this parts
list.
list.
•
Abbreviation
CND : Canadian model.
EA
CND : Canadian model.
EA
: Saudi Arabia model.
MY : Malaysia model.
SP
SP
: Singapore model.
E92 : Chilean and Peruvian model.
MX : Mexican model.
MX : Mexican model.
38
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 numéro spécifié.
le numéro spécifié.
CFD-G55
6-1. Cabinet (Front) Section
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
X-3381-826-1 COVER (WOOFER) ASSY
2
3-238-224-01 COVER (WOOFER.COM)
3
X-3381-825-1 CABINET (FRONT) SUB ASSY (US)
3
X-3381-836-1 CABINET (FRONT) SUB ASSY (EXCEPT US)
* 4
1-683-708-11 CONTROL (POWER) BOARD
5
3-238-243-01 BUTTON (POWER)
6
3-238-235-01 CHASSIS (H/J)
* 7
1-683-707-11 HEADPHONE BOARD
* 8
1-683-709-11 CONTROL (VOL) BOARD
9
1-823-743-11 CABLE, FLEXIBLE FLAT (27 CORE)
10
3-238-226-01 WINDOW (LCD)
11
X-3381-827-1 PANEL (FRONT) ASSY
* 12
A-3021-803-A LCD PC BOARD ASSY
(including BACK LIGHT Board) (EXCEPT EA)
* 12
A-3323-944-A LCD PC BOARD ASSY
(including BACK LIGHT Board) (EA)
13
3-238-222-01 PANEL (UPPER)
14
3-238-245-01 BUTTON (PDW)
15
3-238-242-01 BUTTON (VOL)
16
3-238-247-01 PLATE (PDW), LIGHT GUIDE
17
1-823-744-11 CABLE, FLEXIBLE FLAT (4 CORE)
18
3-238-936-01 SHEET (LCD WINDOW), ADHESIVE
19
3-238-250-01 LID, BATTERY CASE
20
3-238-244-01 BUTTON (CD)
* 21
1-683-710-11 CONTROL (CD) BOARD
22
3-040-916-01 CUSHION (FOOT) FRONT
23
4-951-620-11 SCREW (2.6X10), +BVTP
24
4-951-620-01 SCREW (2.6X8), +BVTP
25
3-238-246-01 HOLDER (LCD.944)
26
1-683-704-11 LCD BOARD
LCD891 1-804-641-11 DISPLAY PANEL, LIQUID CRYSTAL
SP391
SP391
1-544-790-11 SPEAKER (10cm)
SP392
1-544-790-11 SPEAKER (10cm)
SP393
1-825-030-11 SPEAKER (8cm) (WOOFER)
#1
7-685-651-79 SCREW +BVTP 3X20 TYPE2 N-S
#2
7-685-649-79 SCREW +BVTP 3X14 TYPE2 N-S
#3
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
23
23
23
23
23
24
#3
#3
#3
#3
#2
#1
#3
SP391
SP393
#3
#3
#2
1
2
3
5
4
6
7
24
23
23
20
21
22
10
18
11
26
25
12
15
19
16
17
9
8
14
13
LCD891
SP392
a
b
a
b
cabinet (rear) sectioin
not
supplied
SECTION 6
EXPLODED VIEWS
Ver 1.1 2002.05
39
CFD-G55
6-2. Cabinet (Rear) Section
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
#3
#6
#3
#3
#3
F902
T901
#3
#3
#3
#3
#3
#3
#3
#3
#3
64
62
61
63
59
68
69
70
56
55
60
51
71
71
72
72
#3
67
58
52
b
c
c
b
53
54
74
57
65
65
#5
ANT1
not
supplied
not
supplied
not
supplied
a
a
cabinet (upper)
section
section
#3
76
77
51
3-238-228-01 DUCT (UPPER)
52
3-238-229-01 DUCT (LOWER)
53
4-951-620-01 SCREW (2.6X8), +BVTP
54
3-238-230-01 CHASSIS (TRANS)
* 55
1-683-701-11 POWER BOARD
56
3-238-934-01 SPRING (CASSETTE)
57
X-3381-824-1 HOLDER ASSY, CASSETTE
58
1-452-899-11 MAGNET
59
3-019-395-01 PLATE, CHUCKING
60
3-238-219-01 LID, CD
61
3-238-935-01 SPRING (CD)
62
3-238-217-01 CABINET (REAR) (US)
62
3-238-217-11 CABINET (REAR) (CND,E92,MX)
62
3-238-217-21 CABINET (REAR) (MY,SP)
62
3-238-217-81 CABINET (REAR) (EA)
63
3-238-249-01 HANDLE
* 64
1-683-714-11 BATT COM BOARD
65
3-238-136-01 TERMINAL (+,-), BATTERY
* 67
1-683-703-11 BATT BOARD
* 68
A-3323-779-A TUNER BOARD, COMPLETE (US,CND,E92,MX)
* 68
A-3323-815-A TUNER BOARD, COMPLETE (MY,SP,EA)
69
3-238-231-01 CHASSIS (TU)
70
3-238-134-01 TERMINAL, ANTENNA
71
3-238-135-01 TERMINAL (-), BATTERY
72
4-960-167-01 SCREW (3X8) (DIA. 10), +WH
* 74
1-683-702-11 TRANS BOARD
76
3-242-814-01 CHASSIS (VOL/SEL) (EA)
* 77
1-683-713-11 VOL SEL BOARD (EA)
ANT1
1-501-883-21 ANTENNA, TELESCOPIC
0 F902
1-532-504-51 FUSE T4AL/250V (MY,SP,EA)
0 F902
1-576-193-11 FUSE 6.3A/125V (US,CND,E92,MX)
0 T901
1-435-964-11 TRANSFORMER, POWER (US,CND,E92,MX)
0 T901
1-435-965-11 TRANSFORMER, POWER (MY,SP)
0 T901
1-437-719-11 TRANSFORMER, POWER (EA)
#3
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#5
7-685-533-19 SCREW +BTP 2.6X6 TYPE2 N-S
#6
7-682-548-04 SCREW +B 3X8
The components identified by
mark
mark
0
or dotted line with mark
0
are critical for safety.
Replace only with part number
specified.
specified.
Les composants identifiés par
une marque
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ver 1.1 2002.05
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