Lcd System Adjustments; Lcd Initial Data Input (1) - Sony DCR-TRV820 Service Manual

1-5.

LCD SYSTEM ADJUSTMENTS

Note 1: The back light (fluorescent tube) is driven by a high volt-
age AC power supply. Therefore, do not touch the back
light holder to avoid electrical shock.
Note 2: When replacing the LCD unit, be careful to prevent dam-
ages caused by static electricity.
Note 3: Set the LCD BRIGHT to the center.
Set the LCD COLOR (Menu display) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD display are
concentrated in the following connector.
CN5502 of the PD-118 board
Connect the Measuring Instruments via the multi CPC jig (J-6082-
311-A).
The following table shows the Pin No. and signal name of the
connector.
Pin No. Signal Name
1 VB
3 VG
5 VR
7 C-SYNC/XHD
9 GND
[LCD type check]
By measuring the resistor value between Pin 6 of CN5502 and
Pin q; of CN5502, the type of LCD can be discriminated.
PD-118 board CN5502
Resistor
LCD type
value
8.2 kΩ TYPE S
10 kΩ TYPE C
PD-118 board
Fig. 5-1-16
Pin No. Signal Name
2 XVD OUT
4 PANEL COM
6 N.C.
8 XHD OUT
10 GND
Volt ohm meter
CN5502
Multi CPC jig
(J-6082-311-A)
6 pin
0 pin

1. LCD Initial Data Input (1)

Mode
Signal
Adjustment Page
Adjustment Address
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: C, and input the data in the following table.
Note: To write in the non-volatile memory (EEPROM), press
the PAUSE button of the adjustment remote commander
each time to set the data.
3) Select page: 0, address: 01, and set data: 00.
Address Data
AB 53
AC 00
AD 90
AE CB
AF 6C
B0 2C
B1 00
B2 00
B3 20
B4 0A
B5 24
B6 1A
B7 0F
B8 17
B9 21
BA 23
5-29
VTR stop
Arbitrary
C
AB to BA
Remark
Fixed data