Circuit Diagrams and PWB Layouts (updated version)
35
LC4.7A AA
7.
Small Signal Board: DC-DC Converter
T
O
1M46 OF SUPPL
Y
(LCD)
SA1
OR
T
O
CN9005 OF SUB SUPPL
Y (PDP)
OUT
IN
CTRL NC
COM
FB
OUT
COMP
VREF
VCC
INH
SYNC
GND GND_HS
DC-DC CONVERTER
SUPPLY
TO/FROM 1M20 OF HERCULES
NC
NC
(LCD)
(LCD)
(PDP)
NC
NC
NC
(PDP)
(PDP)
NC
A2
A3
A3
A5
RES
RES
A7
for ITV only
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A
B
C
D
A
B
C
D
1251 A1
1252 B1
2251 A2
2252 A2
2253 A3
2254 A2
2255 B2
2261 C4
2262 C4
2263 D3
2264 D4
2265 D5
2266 D5
2268 D7
2269 D7
2271 B6
3251 A2
3259 C2
3260 C3
3266 D5
3267 D6
3268 D6
3270 A6
3271 B6
3273 A7
3274 A7
4251 A2
4255 B2
5251 A2
5252 A2
5257 B3
5258 B3
5259 B3
5262 C3
5267 D6
5268 D7
6259 C3
6262 C3
6267 D6
6270 A6
7260 B4
7262 C4
7271 B7
7272 A7
F251 A1
F252 A1
F253 A1
F254 A1
F255 A1
F257 A1
F258 A4
F259 A7
F260 B7
I251 B3
I252 B4
I253 C4
I254 C3
I255 C4
I256 D5
I257 D5
I258 D5
I259 D5
I260 D7
I261 A6
I262 A6
I263 A6
I264 A2
1252
1
2
3
I264
I262
1R0
3251
I263
I260
I261
I259
I257
I258
I256
I254
I255
I252
I253
I251
F259
F260
F257
F255
F253
F254
F251
F252
4251
5
6
7
8
9
+5V2
+5V2_RELAIS_IO2
1
10
11
2
3
4
SupplyGnd
SupplyGnd
1251
F258
9
3
1
2
8
6
SupplyGnd
+12VSW
L5973D
7262
Φ
4
5
7
LF33CPT
2
3
1
4
5
7260
2262
47u 16V
10u
2263
5268
10u
10u
2264
5259
16V
2269
470u
470u
2268
16V
3268
3K3
1%
3267
5K6
1%
33u
5267
SupplyGnd
SupplyGnd
SupplyGnd
6267
SS36
4K7
3266
SupplyGnd
2266
22n
SupplyGnd
+3V3STBY
220p
2265
10K
3259
2261
3260
6K8
SS14
6259
SS24
6262
+12VUNREG
10u
5262
SupplyGnd
SupplyGnd
+3V3STBY
3274
22K
220K
3273
7272
BC847BW
7271
BC847BW
2271
10n
820R
2K2
3271
+12VUNREG
3270
6270
BZX384-C8V2
5258
5257
2255
10p
4255
2254
16V
10u
2252
10p
+12VUNREG
+8V6
5252
10u
16V
2253
5251
10p
2251
+9V_STBY_PDP
+12V
+5V
POWER_DOWN
E_14710_077.eps
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3139 123 5867.2