XV-DVR9H
92
1
2
4
1
2
3
4
C
D
F
A
B
E
6. ADJUSTMENT
6.1 TV MODULE ADJUSTMENT
The solder land named
"AFT"
The solder land named
"AGC"
1.90V
±
0.20V
Note1
3.80V
±
0.20V
2
Terrestrial tuner input /through output.
Any channel, RF Input
≥
60dBu
System = B/G, I or D/K
AFT = OFF
Note1
Terrestrial tuner input
Ch = E9(203.25MHz), Video= Blackburst
RF Input = 60.0
±
1.0dBu
System = B/G, I or D/K
Note 1 : The adjustment spec. is defined without the thermal drift after the power on.
Therefore, start the adjustment at least 10 minutes after the power on.
No.
Adjustment Name
Adj. Point Measurement Point
Adjustment Value
Adjustment State
1
VCO freerun frequency (AFC voltage)
adjustment
AGC start point adjustment
L315
VR300
1
2
3
4
1
19
C346
C348
R361
C319
C317
C309
C308
C310
C302
C301
U301
R309
L304
R337
Q307
F301
VR300
F305
L315
C314
C303
F306
Q311
Q301
C313
R333
F302
Q314
Q316
R332
R329
R325
R324
R323
R320
R319
R317
L313
L307
L306
D303
C328
C323
C300
C324
F303
F304
Q315
KN300
CN300
R360
R359
Q319
R345
R346
R347
R350
R351
R352
R353
R354
R356
R357
R358
C347
4
4
4
C2
E
E2
Q301,Q311
E
B
E2
B2
C
E
E2
EL FR4 P
V+6E
GND
V+5TU
GND
GND
GND
AWU8217
TV MODULE ASSY
AGC
AWU
AGC Adjust
AFC Adjust
AWU8220
R
NP
1
19
LF
1
12
13
24
Q302
IC302
Q308
Q310
R336
R335
R334
Q304
Q309
Q306
Q305
Q312
Q317
R331
R330
R328
R327
R326
R322
R321
R318
R316
R315
R314
R313
R312
R310
R307
R306
R304
R302
R301
L314
L312
L311
L309
L305
L300
D302
C344
C343
C342
C341
C340
C339
C338
C337
C336
C335
C334
C333
C332
C331
C330
C329
C327
C326
C325
C322
C316
C315
C312
C307
C306
C305
C304
L316
C345
R338
R339
R340
R341
R342
R343
R344
R348
R349
R355
R311
C349
E
EL FR4 P
GNDTV
GNDTV
GNDTV
GND
UVOUT
LDASH
AFC Adj.
7
AWU
NC
ASSY
GND
GNDTV
SDA
LM/
SCL
GNDTV
GNDTV
P_SAVEBS
SIF
VE+6
VE+37
AFT
AGC
AGC
TV MODULE
TUON
AFT
1
AGC Adj.
0
0
0
A-
1
24
12
13
19
1
R
LF
TV MODULE ASSY
A
SIDE A
SIDE B
VR300
L315
Fig.1 Adjustment Points (TV MODULE ASSY)
Fig.2 Measurement Points (TV MODULE ASSY)
∗
It is not necessary to adjust the ASSY normaly when exchanging the ASSY. But the adjustment is
necessary when exchanging the Front End (U301) and IC302 VIF/SIF IC.
Land "AGC"
Land "AFT"
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299