Sony CFD-G505 Service Manual ▷ View online
37
CFD-G505
1
2
3
6
9
10
11
12
8
7
4
5
22
TAPE
TAPE
TAPE
BUF AMP
A1
BUF AMP
A2
NAB
AMP1
NAB
AMP2
23
24
15
14
13
21
20
17
16
RADIO
BUF AMP
B1
BUF AMP
B2
MUTE
MUTE
ON
ON
ON
7dB
26dB
26dB
MONITOR
AMP
LOGIC
18
19
MUTE
7dB
MONITOR
AMP
LINE
TAPE
RADIO
LINE
ALC2
ALC1
DET
REC
AMP1
REC
AMP2
2.1
REF
AMP
MIC
AMP1
VCC
R.LO
LINE
R.RAD
TAPE
R.LIN
MIC
L.LO
REC
L.RAD
MIC I/EX
L.LIN
AGC
L.PO
L.NF
L.RO
L.IN
REF
GND
R.IN
R.RO
R.NF
R.PO
MIC.NF
IC301 TA2068N
24
CAP
23
TNF1
22
TNF2
21
BNF2
20
BOUT2
19
BNF1
18
BOUT1
17
OUT1
16
OUT2
15
VCC
14
SI
13
SC
1
VIN1
2
VIN2
3
SEL2
4
SEL1
5
A1
6
A2
7
B1
8
B2
9
C1
10
C2
11
FIL
TER
12
GND
0dB-
-87dB
-
-87dB
-
Vcc/2
Vcc/2
Surround
50k
50k
50k
50k
50k
50k
Vcc/2
Vcc/2
Vcc/2
Treble1
fc=8kHz
Treble2
fc=8kHz
Bass2
fo=80Hz
Bass1
fo=80Hz
Logic
IC321 BD3870FS-E2
– MAIN Board –
– TC Board –
38
CFD-G505
• IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC801
MAIN BOARD IC801
µ
PD789478GC-A24-8BT (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
NC
–
Not used (open)
3
VLC2
I
LCD bias power supply
4
VLC1
I
LCD bias power supply
5
VLC0
I
LCD bias power supply
6 to 9
COM 0 to COM 3
O
LCD common signal output
10 to 27
SEG 0 to SEG17
O
LCD segment signal output
28, 29
NC
–
Not used (open)
30
WOOFER ON/OFF
O
Woofer on/off control signal output
31
WOOFER 1/2
O
Woofer 1/2 signal output
32
ISS1
O
ISS-1 signal output (not used)
33
ISS2
O
ISS-2 signal output (not used)
34
A-MUTE
O
Audio muting signal output
35
SCL
O
Clock output to the EEPROM
36
SDA
I/O
Data input/output with the EEPROM
37
INIT
O
Initialization setting signal output
38
AVDD
–
Power supply (+3.3V)
39
REC
I
REC signal input from the REC/PB switch (S301) “H”: record mode
40
C-DOOR
I
Detection signal input from the CD OPEN switch (S801) “L”: CD door close
41
SIMUKE
I
Destination setting signal input
42
MODE (975/H)
I
Model setting signal input
43 to 45
KEY-1 to KEY-3
I
Key signal input from the function keys
46
C-FSEQ
I
CD FSEQ synchronizing signal detection signal input from the IC701
47
AVSS
–
Ground
48
RMC
I
Data input from the remote control receiver
49
REG CHK
I
Power supply voltage monitoring signal input
50
WP
I/O
WAKE UP reading signal output (interrupt signal in input mode)
51
TC-PLAY
I
TAPE PLAYsignal input from the TC PLAY switch (S971)
52
WRQ
I
CD WRQ signal input from the IC701
53
C-DO
I
CD DSP data input from the IC701
54
C-DI
O
CD DSP data output to the IC701
55
C-CLK
O
CD clock output to the IC701
56
C-CE
O
CD chip enable signal output to the IC701
57
R-MUTE
O
Radio muting signal output “L”: active
58
C-DRF
I
CD DRF signal input from the IC701
59
C-RES
O
CD system reset signal output to the IC701
60
R-COUNT
I
Radio IF count signal input from the IC2
61
R-CLK
O
Radio clock signal output to the IC2
62
R-DATA
O
Radio data output to the IC2
63
R-CE
O
Radio chip enable signal output to the IC2
64
V-CLOCK
O
Clock signal output to the sound processor (IC321)
65
V-DATA
O
Data output to the sound processor (IC321)
66
P-CON
O
Power control signal output
67
TAPE
O
TAPE function signal output to the IC301
68
VL
O
VL control signal output “L”: active
69
NC
I
Not used (connected to ground)
70
XT1
I
Sub system clock oscillator input (32.768kHz)
71
XT2
O
Sub system clock oscillator output (32.768kHz)
39
CFD-G505
Pin No.
Pin Name
I/O
Description
72
VDD
–
Power supply (+3.3V)
73
VSS
–
Ground
74
X1
I
Main system clock oscillator input (4.19MHz)
75
X2
O
Main system clock oscillator output (4.19MHz)
76
RST
I
System reset signal input
77
CD
O
CD function signal output “L”: active
78
LED CONT
O
LED control signal output (not used)
79
W-LED2
O
Woofer2 LED control signal output
80
W-LED1
O
Woofer1 LED control signal output
40
CFD-G505
SECTION 7
EXPLODED VIEWS
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference 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.
number in the exploded views are not supplied.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-264-875-11 LID BATTERY
2
3-264-873-11 HANDLE
3
3-254-143-11 SCREW (B3), (+) BV TAPPING
4
3-254-145-11 SCREW (B3), (+) BV TAPPING
5
2-189-049-11 COVER HANDLE
SP191
1-826-352-11 SPEAKER (10CM) (L-CH)
SP291
1-826-352-11 SPEAKER (10CM) (R-CH)
SP393
1-825-767-11 SPEAKER (10CM) (WOOFER)
7-1.
OVERALL SECTION
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
1
2
5
4
3
4
4
4
4
3
3
3
4
cabinet (upper) section
cabinet (front) section
cabinet (rear) section
SP191
SP393
SP291
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