Panasonic TC23LX60 - 23" LCD TV, Руководство по обслуживанию

Страница: 20 / 53

13 Block Diagram
13.1. Block Diagram for P and AP (DC-DC CONV.) (1 of 2)
! " # $ % & ' (
)
*
+
,
-
.
/
0
1
2
Q7702
Q7303
D7403
D7303
D7203
D7
D7452
Q7701
D7302
D7703
*D7223
*Q7224
*Q7223
Q7210
D7601
D7207
*D7224
D7304
D7301
Q7301
D7704
D7404
*Q7450
D7204
D7602
D7453
2
SOUND_20V OVP
INV 24V
SUB_ON
3
AP3
13
4
3
N0AB3GH00003
2
1
SHORT SOS
2
1
AC CORD
+20V
24V
1
1
INV 24V
11
+9V
POWER UNIT
2
IC7218
TO
LCD PANEL
(INVERTER)
2
2
INV 24V
INV 24V
8
INV 24V
5
KEY
24V
MAIN+5V ON
10V
(+22V)
INV 24V
MIX
INV 24V
(+15V)
12
10V
INV 24V
L:NORMAL
2
AP1
PANEL_Vcc OVP
2
(+7.5V)
INV 24V
MAIN_9V
1
(+13V)
(+27V)
INV 24V
(+13V)
MAIN9V OVP
SOUND_20V
1
TO
LCD PANEL
(INVERTER)
IC7212
5
CN3
PANEL_Vcc(12V)
6
1
IC7205
RELAY
MAIN_5V
6
3
AP2
6
7
4
+9V
MAIN+9V ON
SOUND+18V ON
5
H:ABNORMAL
1
SHORT SOS DET
SOUND VCC,PANEL VCC
PANELVCC_ON
10V, BT30V
CN2
INV 24V
SOUND VCC,PANEL VCC
O.V.P, DET CIRCUIT
SUB9V
10V,24V,SUB+9V
5
9V OVP 7VS
OVP DET
7
INV 24V
MAIN+5V,MAIN+9V
10V OVP
2
3
8
1
5
INV 24V
Q7204-Q7207
24V
+5V
4
13
UNREG_30V
3
9
2
5
4
Exchange board only
24V OVP
+9V
(DET:AC RELAY OFF)
4
CN1
5
3
5
AP7
INV 24V
1
IC7210
1
5V OVP
1
7
11
AP6
PANELVCC_ON
K1
INV 24V
INV 24V
9
5
2
12
(+18V)
INV 24V
1
3
IC7209
(+1
AP DC-DC CONV.
Note:
K-board is included in the control panel assy.
KEY SCAN
KEY SCAN
K
P
RELAY ON/OFF
TC-23LX60 Block Diagram (1 of 2)
*34567,89:;9<777777!74=7"7777777>+?"#@A&B
20