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HCD-GV6 HCD-GV8 LBT-GV6 LBT-GV8
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91
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9.39 MB
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Service Manual
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Device
Audio
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hcd-gv6-hcd-gv8-lbt-gv6-lbt-gv8.pdf
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Sony HCD-GV6 / HCD-GV8 / LBT-GV6 / LBT-GV8 Service Manual ▷ View online

61
HCD-GV6/GV8
 MAIN BOARD  IC501 M30622MAA-A92FP (SYSTEM CONTROLLER )
Pin No.
Pin Name
I/O
Description
1
STK-POWER
O
Power amplifier on/off selection signal output    “L”: standby mode, “H”: power amplifier on
2
POWER
O
Power on/off control signal output for the audio system (+5V) and deck, panel, audio system 
(+7V) and FM/AM tuner unit (+10V)   “L”: standby mode, “H”: power on
3
F-RELAY
O
Relay drive signal output for the front speaker protect    “H”: relay on
4
REAR-RELAY
O
Relay drive signal output for the rear speaker protect    “H”: relay on    Not used (open)
5
CD-POWER
O
Power on/off control signal output for the CD/video CD section
“L”: standby mode, “H”: power on
6
LINE-MUTE
O
Line muting on/off control signal output    “L”: muting on, “H”: muting off
7
DBFB-H/L
O
DBFB normal/high selection signal output to the M62493FP (IC101)
“L”: DBFB high, “H”: DBFB low (normal)
8, 9
Connect to ground
10
XC-IN
I
Sub system clock input terminal (32.768 kHz)
11
XC-OUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator (IC801)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
X-OUT
O
Main system clock output terminal (16 MHz)
14
VSS
Ground terminal
15
X-IN
I
Main system clock input terminal (16 MHz)
16
VDD
Power supply terminal (+5V)
17
NMI
I
Non-maskable interrupt input terminal    Fixed at “H” in this set
18
WAKE UP
I
Wakeup control signal input from the fluorescent indicator tube driver (IC601)    “L” active
19
SCOR
I
Subcode sync (S0+S1) detection signal input terminal    Not used (fixed at “L”) 
20
RDS-INT
I
Serial data transfer clock signal input from the RDS decoder on the FM/AM tuner unit
Not used (fixed at “L”) 
21
RDS-DATA
I
Serial data input from the RDS decoder on the FM/AM tuner unit    Not used (fixed at “L”) 
22
AC-CUT
I
AC off detection signal input from the reset signal generator (IC801)    “L”: AC cut checked
23
PL-CLK
O
Serial data transfer clock signal output to the pro-logic circuit    Not used (open)
24
PL-DATA
O
Serial data output to the pro-logic circuit    Not used (open)
25
PL-LAT
O
Serial data latch pulse output to the pro-logic circuit    Not used (open)
26
TIMER LED
O
LED drive signal output terminal    Not used (open)
27
PROTECT
I
Protect on/off detection signal input from the speaker protect circuit
“L”: protect on, “H”: protect off
28
V MUTE
O
Video muting on/off control signal output to the BA7615N (IC191)
“L”: muting off, “H”: muting on
29
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the CD 
mechanism controller (IC502) and fluorescent indicator tube driver (IC601)
30
IIC-DATA
I/O
Communication data bus with the CD mechanism controller (IC502) and fluorescent indicator 
tube driver (IC601)
31
NO-USE
O
Not used (open)
32
SQ-DATA
I
Subcode Q data input terminal    Not used (fixed at “L”) 
33
SQ-CLK
O
Subcode Q data reading clock signal output terminal    Not used (fixed at “L”) 
34
SW-MODE
O
Music/movie mode selection signal output to the M62493FP (IC101)
“L”: movie mode , “H”: music mode 
35
CD-DATA
O
Serial data output terminal    Not used (open) 
36
H/P IN
I
Connection detection signal input of the headphone jack (J803)
“L”: no connected, “H”: headphone connected
37
CD-CLK
O
Serial data transfer clock signal output terminal    Not used (open) 
38
493-LAT
O
Serial data latch pulse output to the M62493FP (IC101)
62
HCD-GV6/GV8
Pin No.
Pin Name
I/O
Description
39
CLOCK-OUT
O
Not used (open)
40, 41
NO-USE
O
Not used (open)
42
FL OFF
O
Filament on/off selection signal output for the fluorescent indicator tube (FL601)
“L”: filament off, “H”: filament on     Not used in this set
43
STBY RELAY
O
Main power on/off control signal output    “L”: standby mode, “H”: power on
44
BASS FREQ
O
Sync bass frequency normal/high selection signal output terminal
“L”: sync bass off (normal), “H”: sync bass high    Not used (open)
45
FUNC SEL1
O
Function selection signal output to the MC14052BFEL (IC181) and video selection signal output 
to the BA7615N (IC191)
46
FUNC SEL0
O
Function selection signal output to the MC14052BFEL (IC181) and video selection signal output 
to the BA7615N (IC191)
47
493-DATA
O
Serial data output to the M62493FP (IC101)
48
493-CLK
O
Serial data transfer clock signal output to the M62493FP (IC101)
49
ST-MUTE
O
Tuner muting on/off control signal output to the FM/AM tuner unit
“L”: muting off, “H”: muting on
50
STEREO
I
FM stereo detection signal input from the FM/AM tuner unit    “L”: stereo
51
TUNED
I
Tuning detection signal input from the FM/AM tuner unit    “L”: tuned
52
ST-CE
O
PLL chip enable signal output to the FM/AM tuner unit
53
ST-DOUT
O
PLL serial data output to the FM/AM tuner unit
54
ST-DIN
I
PLL serial data input from the FM/AM tuner unit
55
ST-CLK
O
PLL serial data transfer clock signal output to the FM/AM tuner unit
56
SENS
I
Internal status detection monitor input terminal    Not used (fixed at “L”) 
57
HOLD
O
Laser power control signal output terminal    Not used
58
XLT
O
Serial data latch pulse output terminal    Not used (open) 
59
XRST
O
Reset signal output to the CD mechanism controller (IC502)    “L”: reset
60
DISC-SENS
I
Disc status detection signal input terminal    Not used (fixed at “L”) 
61
T-SENS
I
Disc table status detection signal input from the disc table sensor (IC202)
62
VDD
Power supply terminal (+5V)
63
TBL-L
O
Motor drive signal output to the table motor driver (IC201)    “L” active    *1
64
VSS
Ground terminal
65
TBL-R
O
Motor drive signal output to the table motor driver (IC201)    “L” active    *1
66
LOAD-OUT
O
Loading motor drive signal output terminal    Not used (open)    
67
LOAD-IN
O
Loading motor drive signal output terminal    Not used (open)    
68
ENC3/UP-SW
I
Detection signal input from the up switch (S201)
69
ENC2/DISC-LED
O
LED drive signal output of the DISC No. indicator (D201)    “H”: LED on
70
ENC1
I
Disc tray address detection signal input terminal    Not used (fixed at “L”) 
71
OUT-OPEN
I
Disc tray open/close detection signal input terminal    Not used (fixed at “L”) 
72
B-TRG
O
Deck-B side trigger plunger drive signal output    “H”: plunger on
73
A-TRG
O
Deck-A side trigger plunger drive signal output    “H”: plunger on
74
CAPM-CNT2
O
Capstan motor (M1) drive signal output    “L”: reverse direction, “H”: forward direction
75
CAPM-CNT1
O
Capstan motor drive signal output terminal    Not used (open) 
76
CAP-M-H/L
O
High/normal speed selection signal output of the capstan motor (M1)
“L”: normal speed, “H”: high speed
*1  Table motor (M201) control
Stop
Counter-
clockwise
Clockwise
Brake
TBL-L (pin yd)
“H”
“L”
“H”
“L”
TBL-R (pin yg)
“H”
“H”
“L”
“L”
Terminal
Mode
63
HCD-GV6/GV8
Pin No.
Pin Name
I/O
Description
77
AMS-IN
I
Whether a music is present or not from HA12215F (IC301) is detected at automatic music sensor  
“L”: music is present, “H”: music is not present
78
TC-MUTE
O
Line muting on/off selection signal output to the HA12215F (IC301)
“L”: muting off, “H”: muting on
79
R/PB/PAS
O
Recording/playback/pass selection signal output to the HA12215F (IC301)
“L”: recording mode, “H”: pass, “Hi-z”: playback mode
80
NR-ON/OFF
O
Dolby NR on/off selection signal output to the HA12215F (IC301)
“L”: dolby off, “H”: dolby on
81
REC-MUTE
O
Recording muting on/off selection signal output to the HA12215F (IC301)
“L”: muting on, “H”: muting off
82
BIAS
O
Recording bias on/off selection signal output to the HA12215F (IC301)
“L”: bias off, “H”: bias on
83
EQ-H/N
O
Normal/high speed selection signal output to the HA12215F (IC301)
“L”: normal speed, “H”: high speed
84
PB-A/B
O
Deck-A/B selection signal output to the HA12215F (IC301)    “L”: deck-A, “H”: deck-B
85
ALC
O
Automatic limiter control signal output to the HA12215F (IC301)    “L”: limiter on
86
B-PLAY-SW
I
Detection signal input from the deck- B play detect switch (S1002)    “H”: deck-B play
87
A-PLAY-SW
I
Detection signal input from the deck- A play detect switch (S1001)    “H”: deck-A play
88
A-HALF
I
Detection signal input from the deck-A cassette detect switch (S1003)
“L”: no cassette, “H”: cassette in
89
B-HALF
I
Detection signal input from the deck-B half detect switch (S1006)
90
B-SHUT
I
  Shut off detection signal input from the deck-B side reel pulse detector (IC1002)
91
A-SHUT
I
Shut off detection signal input from the deck-A side reel pulse detector (IC1001)
92
SOFT-TEST
O
Output terminal for the software test (open)
93
HP MUTE
O
Headphone muting control signal output    “L”: muting on, “H”: muting off
94
KEY/CD-ADJ
I
Setting terminal for the CD adjustment mode    Not used (fixed at “L”) 
95
MODEL-IN
I
Model setting terminal
96
AVSS
Ground terminal (for A/D conversion)
97
SPEC-IN
I
Destination setting terminal
98
VREF
I
Reference voltage (+5V) input terminal
99
AVCC
Power supply terminal (+5V) (for A/D conversion)
100
TC-RELAY
O
Recording/playback selection signal output to the REC/PB switch (IC602)
“L”: playback, “H”: recording
64
HCD-GV6/GV8
 PANEL FL BOARD  IC601  TMP88CP76F-1B71 (FLUORESCENT INDICATOR TUBE DRIVER, KEY CONTROL)
Pin No.
Pin Name
I/O
Description
1
SIRCS
I
Remote control signal input from the remote control receiver (IC702)
2
KEY POWER 
SAVE/DEMO
I
Power save/demonstration switch (S609 POWER SAVE/DEMO (STANDBY)) input terminal
“L” is input when key pressing
3
LED SCK
O
Serial data transfer clock signal output to the LED driver (IC701)
4
KEY POWER 
ON/OFF
I
Power on/off switch (S608 I/1) input terminal    “L” is input when key pressing
5
LED DAT
O
Serial data output to the LED driver (IC701)
6
LED LATCH
O
Serial data latch pulse signal output to the LED driver (IC701)
7
LED SEL
O
LED selection signal output
8
WAKE UP
O
Wakeup control signal output to the system controller (IC501)    “L” active
9
VOL A
I
Jog dial pulse input from the rotary encoder (S736 VOLUME) (A phase input)
10
VOL B
I
Jog dial pulse input from the rotary encoder (S736 VOLUME) (B phase input)
11
KEY 0
I
Key input terminal (A/D input)    S601 to S607, S727 to S730, S735 (DISPLAY, SPECTRUM 
ANALYZER, TIMER SELECT, SLEEP, c/CLOCK SET, GAME, FUNCTION, ROCK, 
MOVIE, REGGAE, KARAOKE PON/MPX, KEY CONTROL #) keys input
12
KEY 1
I
Key input terminal (A/D input)
S621 to S627, S743 to S750 (H, h, x, . AMS > m/M, DOLBY NR, DIRECTION,
CD FLASH, EDIT, NON-STOP, DISC1/2/3/4/5) keys input
13
KEY 2
I
Key input terminal (A/D input)
S615 to S619, S716 to S726 (h, H, x, . AMS > m/M, POP, JAZZ, SAMBA, 
DANCE, TANGO, SALSA, GAME, b, v, V, B) keys input
14
KEY 3
I
Key input terminal (A/D input)    S701 to S715, S741 (TUNER MEMORY, ENTER/TEXT, –, 
TUNER/BAND, +, STEREO/MONO, TUNING MODE, ENTER, P.FILE, FLAT, KEY 
CONTROL 2, SURROUND, GROOVE, SUPER WOOFER, SUPER WOOFER MODE, CD 
LOOP) keys input
15
KEY 4
I
Key input terminal (A/D input)    S611 to S614, S751 to S762 (X, z REC, H SPEED DUB, CD 
SYNC, HX, x, m, M, DISC SKIP, REPEAT, PLAY MODE, NEXT, PREV, RETURN, 
SELECT, ACTIVE) keys input
16
GUITAR 
DISTORTION
O
Distortion on/off control signal output terminal    Not used
17
BPF 0
I
Spectrum analyzer drive (super low frequency)  signal input from the spectrum analyzer band-
pass filter (IC602) (for 40 Hz)
18
BPF 1
I
Spectrum analyzer drive (low frequency)  signal input from the spectrum analyzer band-pass filter 
(IC602) (for 100 Hz)
19
BPF 2
I
Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer 
band-pass filter (IC602) (for 400 Hz)
20
BPF 3
I
Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer 
band-pass filter (IC602) (for 2 kHz)
21
BPF 4
I
Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter 
(IC602) (for 6 kHz)
22
ALL BAND
I
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC602)
(for VACS, non-stop signal)
23
VSS
Ground terminal
24
VASS
Ground terminal (for A/D conversion)
25
VAREF
I
Reference voltage (+5V) input terminal (for A/D conversion)
26
VDD
Power supply terminal (+5V)
27, 28
GR-16, GR-15
O
Grid drive signal output to the fluorescent indicator tube (FL601)
29 to 40
GR-14 to GR-3
O
Grid drive signal output to the fluorescent indicator tube (FL601)
41
VDD VFT
Power supply terminal (+5V)
42
GR-2
O
Grid drive signal output to the fluorescent indicator tube (FL601)
43
GR-1
O
Grid drive signal output to the fluorescent indicator tube (FL601)
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