Toshiba 42WP37C Service Manual page 65

P-Board Block Diagram
L451 L451
Q451
Q452
IC451
Q454
Q453
3 3 8 8
6 6
A
4 4
! D451 D451
POWER POWER
FACTOR FACTOR
CONTROL CONTROL
P P
Power Supply Board Power Supply Board
B
HOT
C COLD
! RL401
TV ON/OFF
TO PF9 P9
NEUTRAL
NEUTRAL 1
LINE
LINE
4
!
RL403
D
RUSH ON/OFF
5V
!
RL402
E
P-Board Block Diagram
1
IC551
SUSTAIN VOLTAGE CONTROL
4
Vin
DRV.REG
Drain Drain
=8.3V 3 3
Rg2 Rg2
START O.V.P
DRIVER
Rg1 Rg1
REG 2 2
LATCH Source Source
OCP/FB OCP/FB
1 1
T.S.D
- -
+ +
O.S.C
- -
+ +
GND GND
5 5
Q455
Q457
Q456
Q651
Q650
IC550 IC550
IC552
3 3
PROCESS VOLTAGE CONTROL
4
Vin
DRV.REG Drain
=8.3V
3 3
Rg2
START
O.V.P
DRIVER
Rg1
REG
LATCH
OCP/FB
1 1
T.S.D - -
+ +
O.S.C
2 2
Source Source
- -
+ +
GND GND
5 5
15V
!
D404
IC401
STANDBY
3 3
VOLTAGE
CONTROL
2 2
1 1
17V 17V
13.5V 13.5V
2 3
380V
!
T501
10 10
9 9 12 12
7 7 14 14
6 6 15 15
4 4 17 17
18 18
70V 70V
2 2 19 19
1 1 20 20
! D565
Vsus Vsus
1 1
IC553
2 2
! T502 ERROR ERROR
OUT OUT
DETECT DETECT 3 3
1 1
IN IN
1 1 18 18
2 2
12V 12V
2 2 17 17
15Vs 15Vs
3 3 16 16
4 4 15 15
12V 12V
14 14
13 13
15V 15V
7 7
12 12
8 8 11 11
REGENERATIVE REGENERATIVE
CONTROL CONTROL
9 9 10 10
Q552,3,4 Q552,3,4
IC554 IC554
HOT COLD
D566
!
Vda Vda
1 1
2 2
!
T401
3 3
8 8 9 9
IC557
7 7 10 10
ERROR ERROR
6 6 11 11 DETECT DETECT
7V 7V
12 12
4 4 13 13
3 3 14 14
2 2 15 15
1 1
! D408
1 1
2 2
IC402 IC402 3 3
ERROR ERROR
+ +
DETECT DETECT
TVON/OFF TVON/OFF
Q401 Q401
RUSH ON/OFF RUSH ON/OFF
Q403 Q403
5V 5V
5V 5V
Q402 Q402
4 5
P11 P11 TO SS11 TO SS11
2 2 VSUS VSUS
3 3 VSUS VSUS
TO SC2 TO SC2
P2 P2
190V 190V
1 1 VSUS VSUS
2 2 VSUS VSUS
P10 P10
Q557 Q555 1 1 DR15V DR15V
3 3 FAN SUS FAN SUS
4 4 5V 5V
1 1
2 2
P23 P23 TO SC23 TO SC23
3 3
1 1 DR15V DR15V
2 2 DR15V DR15V
IC558
ERROR ERROR P5 P5 TO Z5 TO Z5
DETECT DETECT
11 11 DR15V DR15V
12V 12V
1 1
2 2 12V 12V
3 3 5V 5V
4 4 STB5V STB5V
7 7 +12Vs +12Vs
8 8 +12Vs +12Vs
P7 P7
1 1 +15Vs +15Vs
+15Vs +15Vs
2 2
P25 P25 TO D25 TO D25
IC555 IC555
1 1 12V 12V
AVR 5V AVR 5V 2 2 12V 12V
1 1 2 2 5 5 5V 5V
P27 P27
TO D27 TO D27
1 1 RUSH ON/OFF RUSH ON/OFF
IC403 IC403
2 2 TV ON/OFF TV ON/OFF
AVR 5V AVR 5V
Q404
3 3 M POWER M POWER
STB 5V STB 5V
1 1 3 3 4 4
2 2 Q558 5 5 KILL SOS KILL SOS
6 6 FAN SOS FAN SOS
7 7 PS SOS PS SOS
8 8 ALL OFF1 ALL OFF1
P12 P12 TO SS12 TO SS12
1 1 VDA VDA
2 2 DR15V DR15V
4 4 STB PS STB PS
P-Board Block Diagram
6 7
42WP37
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