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Model
HCD-V4800 LBT-V4800 LBT-V4800R
Pages
67
Size
1.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-v4800-lbt-v4800-lbt-v4800r.pdf
Date

Sony HCD-V4800 / LBT-V4800 / LBT-V4800R Service Manual ▷ View online

– 25 –
Pin No.
Pin Name
I/O
Function
87
PB-A/B
O
Deck-A/B selection signal output to the HA12203NT (IC1501)    “L”: deck-A, “H”: deck-B
88
EQ-H/N
O
Normal/high speed selection signal output to the HA12203NT (IC1501)
“L”: normal speed, “H”: high speed
89
BIAS
O
Recording bias on/off selection signal output to the HA12203NT (IC1501)
“L”: bias off, “H”: bias on
90
REC-MUTE
O
Recording mute on/off selection signal output to the HA12203NT (IC1501)
“L”: mute on, “H”: mute off
91
NR-ON/OFF
O
Dolby NR on/off selection signal output to the HA12203NT (IC1501)
“L”: dolby off, “H”: dolby on
92
R/P-PASS
O
Recording/playback/pass selection signal output to the HA12203NT (IC1501)
93
TC-MUTE
O
Line mute on/off selection signal output to the HA12203NT (IC1501)
“L”: mute off, “H”: mute on
94
A-PLAY-SW
I
Detection input from the deck- A play detect switch (S1001)    “H”: deck-A play
95
B-PLAY-SW
I
Detection input from the deck- B play detect switch (S1002)    “H”: deck-B play
96
RELAY
O
Recording/playback select signal output to the REC/PB switch (IC602)
“L”: playback, “H”: recording
97
A-HALF
I
Detection input from the deck-A cassette detect switch (S1004)
“L”: cassette in, “H”: no cassette
98
POWER
O
On/off selection signal output of the main power supply    “L”: power on
99
SW-F-CON
O
Control signal output of the super woofer mode    “H”: music, “L”: movie
100
STK-MUTE
O
Power amplifier on/off selection signal output terminal    “L”: on, “H”: standby
– 26 –
   
Pin No.
Pin Name
I/O
Function
1
LED3
O
LED drive signal output terminal (SUPER WOOFER, 
P (CD))
2
LED4
O
LED drive signal output terminal (
· (CD))
3
LED5
O
LED drive signal output terminal (deck-B 
ª / ·)
4
LED6
O
LED drive signal output terminal (
P / r REC (TAPE))
5
LED7
O
LED drive signal output terminal (EFFECT, ENTER)
6
LED8
O
LED drive signal output terminal (FILE 1/2)
7
VSS
Ground terminal
8
X-OUT
O
System clock output terminal (8 MHz)
9
X-IN
I
System clock input terminal (8 MHz)
10
RESET
I
System reset signal input from the reset signal generator (IC302)
“L”: reset
For several
hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
11
LED9
O
LED drive signal output terminal    Not used (connected to ground)
12
LED10
O
LED drive signal output terminal    Not used (connected to ground)
13
TEST
I
Connected to ground
14
LED11
O
LED drive signal output terminal (FILE 3/4)
15
LED12
O
LED drive signal output terminal (FILE 5, P FILE)
16
LED13
O
LED drive signal output terminal (MENU 2/1)
17
LED14
O
LED drive signal output terminal (KEY CONTROL)
18
LED15
O
LED drive signal output terminal (decck-A 
· / ª)
19
LED16
O
LED drive signal output terminal (CD NON-STOP, VCD)
20
VOL-A
I
Rotary encoder pulse input from the S701 (VOLUME)
21
DOOR SW
I
CD door switch (S691 (
6 OPEN)) input terminal
22
JOG-A
I
Jog dial pulse input from the S711 (
≠ AMS ±)
23
CLOCK
I/O
 
Communication data reading clock signal input or transfer clock signal output with the master
controller (IC301) and IIC interface controller (IC901)
24
DATA
I/O
Communication data bus with the master controller (IC301) and IIC interface controller
(IC901)
25
LED SELECT
O
LED selection signal output terminal
26
MODEL
I
Destination setting terminal
27
KEY-1
I
28
KEY-2
I
29
KEY-3
I
30
KEY-4
I
31
LED17
O
LED drive signal output terminal (PBC, AUTO PBC)
32
L+R
I
Spectrum analyzer drive signal input terminal (for high frequency)
PANEL BOARD  IC601  TMP87CH74-6566
(FLUORESCENT INDICATOR TUBE DRIVER, KEY CONTROL, LED DRIVER)
Key input terminal (A/D input) (S601 to 608, 651 to 659)
ENTER/NEXT, TUNER MEMORY, TUNING MODE, TUNER/BAND, TUNING +/–, 
STEREO/MONO, FUNCTION, deck-B (
· / ª / ) / 0 / p), P , r REC,
H SPEED DUB, CD SYNC
Key input terminal (A/D input) (S609 to 615, 676 to 679, 681 to 686)
GROOVE, GEQ 
4 / 9 / ( / $ , SUPER WOOFER, SUPER W MODE, CD (· / p /
P), DISC SKIP, CD ()), REPEAT, PLAY MODE, 1/ALL DISCS, EDIT, CD (0)
Key input terminal (A/D input) (S616 to 618, 641 to 647, 661 to 666, 670, 671)
GEQ CONTROL, ENTER, EFFECT, deck-A (
· / ª / p / 0 / )), DOLBY NR, 
DIRECTION, DISC 1 to DISC 5, CD FLASH, PREV, NEXT
Key input terminal (A/D input) (S619 to 626, 628 to 633, 667 to 669)
SPECTRUM ANALYZER, DISPLAY/DEMO, POWER. CLOCK SET, REC, DAILY 1/2, 
SLEEP, WAVE, KARAOKE PON/MPX, SURROUND, P FILE MEMORY, 
n, ˜,
CD NON-STOP, CD LOOP, RETURN
– 27 –
Pin No.
Pin Name
I/O
Function
33
SIRCS
I
Sircs input from the remote control receiver (IC602)
34
VOL-B
I
Rotary encoder pulse input from the S701 (VOLUME)
35
JOG-B
I
Jog dial pulse input from the S711 (
≠ AMS ±)
36
SPEANA-1
I
37
SPEANA-2
I
38
VASS
Ground terminal
39
VAREF
I
Reference voltage (+5V) input terminal (for A/D conversion)
40
VDD
Power supply terminal (+5V)
41
Not used (open)
42 to 56
GR-1 to GR-15
O
Grid drive signal output to the fluorescent indicator tube (FL601)
57 to 77
SEG-1 to        
SEG-21
O
Segment drive signal output to the fluorescent indicator tube (FL601)
78
VKK
Power supply terminal (–30 V) (for fluorescent indicator tube drive)
79
LED1
O
LED drive signal output terminal (TUNER/BAND)
80
LED2
O
LED drive signal output terminal (ENTER/NEXT, GROOVE)
Spectrum analyzer drive signal input terminal (A/D input)
– 28 –
   VIDEO BOARD  IC701  HD6433032SK12F (CD MECHANISM CONTROLLER)
Pin No.
Pin Name
I/O
Function
1
CMD0
I/O
2
CMD1
I/O
3
CMD2
I/O
4
CMD3
I/O
5
SACK
O
Data acknowledge output to the IIC interface controller (IC901)
6
QINT
I
Interrupt status input from the IIC interface controller (IC901)
7
VDAC-XLAT
O
Serial data latch pulse output to the video D/A converter (IC401)
8
DF-XLAT
O
Serial data latch pulse output to the D/A converter/digital filter (IC101)
9
P90/TXD
O
Transmit data output terminal    Not used (open)
10
SUBQ
I
Sub-code Q data signal input from the CXD2545Q (IC101)
11
SQCK
O
Sub-code Q data transfer clock signal output to the CXD2545Q (IC101)
12
VSS
Ground terminal
13
D0
I/O
14
D1
I/O
15
D2
I/O
16
D3
I/O
17
D4
I/O
18
D5
I/O
19
D6
I/O
20
D7
I/O
21
VCC
Power supply terminal (+5V)
22
A0
O
23
A1
O
24
A2
O
25
A3
O
26
A4
O
27
A5
O
 
28
A6
O
29
A7
O
30
VSS
Ground terminal
31
A8
O
32
A9
O
33
A10
O
Address signal output to the S-RAM (IC751)
34
A11
O
35
A12
O
36
A13
O
37
A14
O
38
A15
O
39
A16
O
40
A17
O
41
A18
O
42
A19
O
Address signal output terminal    Not used (open)
43
WAIT
I
Wait signal input from the MPEG audio/video decoder (IC201)
44
MD0
I
Mode selection terminal (fixed at “H”)
45
MD1
I
Mode selection terminal (fixed at “L”)
46
Φ
O
System clock signal output terminal    Not used (open)
Two-way data bus with the IIC interface controller (IC901)
Two-way data bus with the S-RAM (IC751)
Address signal output to the S-RAM (IC751)
Address signal output terminal    Not used (open)
Address signal output to the MPEG audio/video decoder (IC201) and S-RAM (IC751)
Address signal output terminal    Used for chip enable signal output to the S-RAM (IC751)
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