Sony STR-DB830 Service Manual - Page 38

Ic251, 252 Njm2296m S Video Board - protector on

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IC414, 415, 416 TC9299P (MAIN BOARD) V+ Vout2 SW1 Vin1 GND Vout3 SW2 Vin2 16 15 14 13 12 11 10 9 S6 S5 S1 S4 S3 S7 S2 12345678 Vout1 SW5 Vin5 SW3 Vin4 SW4 Vin3 V- IC701 µPC2581V (REAR AMP BOARD) PROTECTOR BIAS CIRCUIT REG DRIVE PRE DRIVE PRE DRIVE DRIVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 IC501, 601 µPC2581V (MAIN BOARD) VSS 1 OUT 2 L-ch IN 3 NC 4 A-GND 5 L-CH DATA LATCH CIRCUIT R-CH DATA LATCH CIRCUIT 16 VDD 15 OUT 14 IN R-ch 13 NC 12 A-GND CS1 6 GND 7 CK 8 LEVEL SHIFT CIRCUIT SHIFT REGISTER (13bit) STROBE GENERATOR CIRCUIT LEVEL SHIFT CIRCUIT 11 CS2 10 STB 9 DATA IC201 NJM2296M (VIDEO BOARD) PROTECTOR BIAS CIRCUIT REG DRIVE PRE DRIVE PRE DRIVE DRIVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MUTE +VOUT1 -VOUT1 COMP1 NF1 IN1 GND IN2 NF2 COMP2 -VOUT2 +VOUT2 VCC1 VCC2 VEE MUTE +VOUT1 -VOUT1 COMP1 NF1 IN1 GND IN2 NF2 COMP2 -VOUT2 +VOUT2 VCC1 VCC2 VEE IC251, 252 NJM2296M (S VIDEO BOARD) V+ Vout2 SW1 Vin1 GND Vout3 SW2 Vin2 16 15 14 13 12 11 10 9 S6 S5 S1 S4 S3 S7 S2 1 2 3 4 5 6 7 8 Vout1 SW5 Vin5 SW3 Vin4 SW4 Vin3 V- - 60 -

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— 60 —
IC414, 415, 416 TC9299P (MAIN BOARD)
IC501, 601 μPC2581V (MAIN BOARD)
IC701 μPC2581V (REAR AMP BOARD)
IC201 NJM2296M (VIDEO BOARD)
IC251, 252 NJM2296M (S VIDEO BOARD)
1
2
3
4
5
16
15
14
13
12
6
7
8
11
10
9
CK
GND
CS1
DATA
STB
CS2
A-GND
NC
IN
OUT
VSS
A-GND
NC
IN
OUT
VDD
L-CH
DATA
LATCH
CIRCUIT
LEVEL
SHIFT
CIRCUIT
SHIFT
REGISTER
(13bit)
STROBE
GENERATOR
CIRCUIT
LEVEL
SHIFT
CIRCUIT
R-CH
DATA
LATCH
CIRCUIT
R-ch
L-ch
PROTECTOR
DRIVE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PRE
DRIVE
PRE
DRIVE
BIAS CIRCUIT
REG
MUTE
+VOUT1
–VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
–VOUT2
+VOUT2
VCC1
VCC2
VEE
DRIVE
PROTECTOR
DRIVE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PRE
DRIVE
PRE
DRIVE
BIAS CIRCUIT
REG
MUTE
+VOUT1
–VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
–VOUT2
+VOUT2
VCC1
VCC2
VEE
DRIVE
9
S5
S6
S7
S4
S1
S2
S3
Vout1
Vout2
Vout3
V-
GND
SW3
SW2
SW1
SW5
SW4
Vin1
Vin2
Vin3
Vin4
Vin5
V+
10
11
12
13
14
15
16
1
5
2
3
4
6
7
8
9
S5
S6
S7
S4
S1
S2
S3
Vout1
Vout2
Vout3
V-
GND
SW3
SW2
SW1
SW5
SW4
Vin1
Vin2
Vin3
Vin4
Vin5
V+
10
11
12
13
14
15
16
1
5
2
3
4
6
7
8