Read Sony MHC-S3 / TA-S3 Service Manual online
TA-S3
18
18
5-9.
IC PIN FUNCTION DESCRIPTION
•
FRONT AMP BOARD IC310 PT8300-S (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VSS
—
Ground terminal
2
RESET_B
I
Reset signal input terminal Not used
3
CLK
I
Serial data transfer clock signal input from the tuner unit (ST-S3)
4
LATCH
I
Serial data latch pulse input from the tuner unit (ST-S3)
5
LED C
O
LED drive signal output of the 2CH/MULTI C indicator (D706) “L”: LED on
6
LED B
O
LED drive signal output of the MOVIE MODE B indicator (D705) “L”: LED on
7
LED A
O
LED drive signal output of the MUSIC MODE A indicator (D704) “L”: LED on
8
LED EQ
O
LED drive signal output of the EQ indicator (D703) “L”: LED on
9
LED SUR
O
LED drive signal output of the SUR indicator (D702) “L”: LED on
10
LED BLU
O
LED drive signal output of the MULTI CHANNEL DECODING indicator (D781)
“L”: LED on
“L”: LED on
11
HP SW
I
Headphone detection signal input terminal “H”: headphone on
12
PROTECT
I
Over load detection signal input for speaker output “L”: over load
13
LATCHO
O
Serial data latch pulse output terminal Not used (open)
14
CLKO
O
Serial data transfer clock signal output terminal Not used (open)
15
—
—
Not used (open)
16
—
—
Not used (fixed at “L”)
17
—
—
Not used (open)
18
MUTING
O
Muting on/off control signal output terminal “L”: muting
19
LED PW
O
LED drive signal output of the I/1 indicator (D701) “L”: LED on
20
SUR RY
O
Relay drive signal output for the surround speaker (rear and center) protection “H”: on
Not used (fixed at “H”)
Not used (fixed at “H”)
21
F RY
O
Relay drive signal output for the front speaker protection “H”: on
22
STK PW
O
Power amplifier on/off selection signal output terminal “L”: standby, “H”: on
23
—
—
Not used (open)
24
STBY RY
O
Standby relay drive signal output terminal “L”: standby, “H”: power on
25
DATA OUT
O
Serial data output to the tuner unit (ST-S3)
26
DATA IN
I
Serial data input from the tuner unit (ST-S3)
27
PULLUP
—
Not used (open)
28
VCC
—
Power supply terminal (+5V)
6-1.
COVER SECTION
SECTION 6
EXPLODED VIEWS
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list is given in the last of
the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
1-773-178-11 WIRE (FLAT TYPE) (23 CORE)
2
3-363-099-21 SCREW (CASE 3 TP2)
3
4-232-336-11 COVER
4
4-233-558-01 PANEL (2CH/VCD), BACK (AEP)
4
4-233-558-11 PANEL (2CH/VCD), BACK (UK)
5
1-680-751-11 SUB TRANS BOARD
6
1-763-072-11 FAN, D. C.
7
1-680-755-11 RELAY BOARD
#4
#1
#1
#1
#1
#1
#1
#1
#1
#1
not supplied
Front panel section
2
2
1
5
6
7
4
3
not supplied
not supplied
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