Sony DXC-S500, Service Manual

Page: 41 / 148

5-7
DXC-S500 (E)
E
F
6. LCD display signal sensor voltage adjustment
(NTSC)
1. Connect an LCD_G-Sig signal (at pin 1 of CN4) to the
oscilloscope at TP8 on the PD-106 board and observe
it (with the trigger set).
2. Select CH5 of ADJ EVR SETTING EVR3 to satisfy
specifications, change the data value, and adjust so that
the DC voltage satisfies the specifications.
Specification: E = 2.0
±
0.1 V dc
3. Perform “7. LCD display contrast voltage adjustment
(NTSC)”.
7. LCD display contrast voltage adjustment
(NTSC)
1. Connect an LCD_G-Sig signal (at pin 1 of CN4) to the
oscilloscope at TP8 on the PD-106 board and observe
it (with the trigger set).
2. Select No. 04 of ADJ LCD SETTING to satisfy
specifications, change the data value, and adjust so that
the DC voltage satisfies the specifications.
Specification: F = 1.0
±
0.1 V dc
3. Perform “8. LCD display VCOM voltage adjustment
(NTSC)”.
G
8. LCD display VCOM voltage adjustment (NTSC)
1. Connect a COM signal (at pin 5 of CN4) to the
oscilloscope at TP7 on the PD-106 board and observe
it (with the trigger set).
2. Select No. 09 of ADJ LCD SETTING to satisfy
specifications, change the data value, and adjust so that
the DC voltage satisfies the specifications.
Specification: 5.8
±
0.1 V dc
3. Perform “9. LCD display PSIG voltage adjustment
(NTSC)”.
9. LCD display PSIG voltage adjustment (NTSC)
1. Connect a PSIG signal (at pin 3 of CN4) to the
oscilloscope at TP6 on the PD-106 board and observe
it (with the trigger set).
2. Select No. 08 of ADJ LCD SETTING to satisfy
specifications, change the data value, and adjust so that
the DC voltage satisfies the specifications.
Specification: G = 5.0
±
0.1 V dc