Panasonic TX-LR37S25 Service Manual ▷ View online
TX-LR37S25
29
7.16. Stand MTG Assembly
(Refer each part no. to part list)
1. STAND MTG are put in BAG.
2. BAG is wrapped around STAND MTG.
3. SCREW is put in the BAG and use yellow tape to hold screw bag.
2. BAG is wrapped around STAND MTG.
3. SCREW is put in the BAG and use yellow tape to hold screw bag.
TX-LR37S25
30
8 Measurements and Adjustments
8.1.
Voltage chart of A-board
Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table.
8.2.
Voltage chart of P-board
Set IP-Board to a dummy set and check the satisfaction with the specified voltage as following table.
NOTE: Active stdby will operate after 1 minute set stdby
8.3.
Power Supply to Check A-Board
1. Add a regulated voltage to following TP.
2. MAIN_SW / Turn on a MAIN_SW
3. SUB_ON (TP2814) ‘High’ TP/ Add a regulated voltage to following TP after SUB_ON (TP2767) becomes ‘High’.
3. SUB_ON (TP2814) ‘High’ TP/ Add a regulated voltage to following TP after SUB_ON (TP2767) becomes ‘High’.
Power Supply Name
Measurement Point
Specification (V)
SUB3.3V
TP5503
3.21V - 3.45V
3.33 ok
SUB1.5V
TP5502
1.47V - 1.56V
1.51 ok
SUB1.2V_A
TP5500
1.26V - 1.33V
1.29 ok
SUB1.2V_D
TP5501
1.26V - 1.33V
1.28 ok
SUB5V
TP5200
4.86V - 5.14V
4.99 ok
SUB_OP_5V
TP5300
4.92V - 5.31V
5.11 ok
Power Supply Name
Measurement Point
Normal condition (V)
Normal condition (V)
P32V
TP7503
31 ± 2.5 V
< 3.0
17V
TP7502
18 ± 2 V
< 2.0
DTV12V
TP7501
12.2 ± 0.6 V
< 2.0
TUNER6V
TP7601
6.1 ± 0.3 V
6.1 ± 0.3 V
DC390V
TP7201
390 ± 10 V
NO CARE
* HOT
Power Supply Name
TP No.
Voltage (V)
5.8VS
TP2750
5.8 +/- 2%
STB_SUB_5.8V
TP2789
5.8 +/- 2%
GND
TP2785
0V
BL_SOS
TP2780
0V
Power Supply Name
TP No.
Voltage (V)
P17V
TP2782
18V +/- 2%
SUB_F12V_15V
TP2783
12V +/- 2%
TX-LR37S25
31
8.4.
Target of WB adjustment value
* Clearance use WB 3 mode
x, y : +/-0.003 in Cool Colour Balance, +/-0.010 in Warm/Normal Colour Balance use WB difference mode
x, y : +/-0.003 in Cool Colour Balance, +/-0.010 in Normal Colour Balance, +/-0.015 in Warm Colour Balance
x, y : +/-0.003 in Cool Colour Balance, +/-0.010 in Warm/Normal Colour Balance use WB difference mode
x, y : +/-0.003 in Cool Colour Balance, +/-0.010 in Normal Colour Balance, +/-0.015 in Warm Colour Balance
8.5.
Picture level adjustment (RF)
Ambient Temp. Colour Balance
White
Gray
x
y
Y (cd/m
2
)
x
y
Y (cd/m
2
)
Cool
0.279
0.286
0.279
0.286
10.0 - 12.5 deg.
Normal
0.293
0.308
0.293
0.308
Warm
0.323
0.334
0.323
0.334
Cool
0.276
0.282
0.276
0.282
12.5 - 17.5 deg.
Normal
0.291
0.304
0.291
0.304
Warm
0.320
0.330
0.320
0.330
Cool
0.273
0.277
0.273
0.277
17.5 - 22.5 deg.
Normal
0.287
0.298
0.287
0.298
Warm
0.317
0.325
> 300
0.317
0.325
don’t care
Cool
0.271
0.273
0.271
0.273
22.5 - 27.5 deg.
Normal
0.285
0.295
0.285
0.295
Warm
0.314
0.322
0.314
0.322
Cool
0.268
0.268
0.268
0.268
27.5 - 32.5 deg.
Normal
0.281
0.289
0.281
0.289
Warm
0.310
0.316
0.310
0.316
Cool
0.265
0.263
0.265
0.263
32.5 - 35.0 deg.
Normal
0.278
0.284
0.278
0.284
Warm
0.306
0.311
0.306
0.311
Instrument Name
Remarks
1. REMOTE TRANSMITTER
2. Ex. Signal (Sprit color bar)
2. Ex. Signal (Sprit color bar)
Adjustment or Inspection Procedure
Remarks
<procedure>
1. Receive the Sprit color bar.
(Screen mode: ZOOM or FULL Picture mode: DYNAMIC AI: OFF AI Picture: OFF)
*BACK LIGHT +30
*BACK LIGHT +30
<Inspection>
1. Enter Service mode, and select MAIN_ADJ PICTURE.
Volume UP/DOWN key makes GAIN displayed under PICTURE to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited
to the adjustment value automatically.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited
to the adjustment value automatically.
(The Sprit Color Bar Pattern)
TX-LR37S25
32
8.6.
Picture level adjustment (VIDEO)
8.7.
Picture level adjustment (YUV)
Instrument Name
Remarks
1. REMOTE TRANSMITTER
2. Video signal generator (100% Color bar)
2. Video signal generator (100% Color bar)
Adjustment or Inspection Procedure
Remarks
<procedure>
1. Receive 100% Color bar.
(ASPECT: ZOOM or FULL, Picture mode: VIVID, AI Picture: OFF)
* BACK LIGHT MAX VALUE
* BACK LIGHT MAX VALUE
<Inspection>
1. Enter Service mode, and select ADJUST CONTRAST.
Volume UP/DOWN key makes GAIN value displayed on the right of CONTRAST to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value
automatically.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value
automatically.
Instrument Name
Remarks
1. REMOTE TRANSMITTER
2. Component Video signal generator (100% Color bar 1080i)
2. Component Video signal generator (100% Color bar 1080i)
Adjustment or Inspection Procedure
Remarks
<procedure>
1. Receive 100% Color bar.
(ASPECT: ZOOM or FULL, Picture mode: VIVID, AI Picture: OFF)
* BACK LIGHT MAX VALUE
* BACK LIGHT MAX VALUE
<Inspection>
1. Enter Service mode, and select ADJUST CONTRAST.
Volume UP/DOWN key makes GAIN value displayed on the right of CONTRAST to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value
automatically.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value
automatically.
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