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1-4. LCD SYSTEM ADJUSTMENTS
Note 1: The back light (fluorescent tube) is driven by a high voltage
AC power supply. Therefore, do not touch the back light
holder to avoid electrical shock.
Note 2: When replacing the LCD unit, be very careful to prevent
damages caused by static electricity.
Note 3: Set the brightness to the center using the LCD BRIGHT
button (ME-4800 board).
[Power Supply Voltage]
Adjust the power supply voltage so that the voltage of Pin 9 (PANEL
UNREG) of CN5601 on PD-71 board becomes 8.4 ± 0.1 Vdc.
1. LCD Initial Data Input
Mode
VTR stop
Signal
No signal
Adjustment Page
D
Adjustment Address
60, 61 C8 to D3, F0 to F7
Adjusting method:
1) Set data: 01 to page: 1, address: 00.
2) Select page: D, and input the data in the following table.
Note: To write in the non-volatile memory (EEPROM), press
the PAUSE button of the adjusting remote commander
each time to set the data.
3) Set data: 00 to page: 1, address: 00.
Address
60
61
C8
C9
CA
CB
CC
CD
CE
CF
D0
D1
D2
D3
F0
F1
F2
30 (NTSC), 2C (PAL)
DE (NTSC), DA (PAL)
F3
F4
F5
A8 (NTSC), C8 (PAL)
F6
F7
Data
57
57
68
80
80
5A
3F
79
00
48
80
6D
FF
FF
3B
46
82
40
4B
2. Input Signal Level Adjustment (VC-183 board)
Set the input signal level of LCD block and EVF block.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Connection:
In case connect the oscilloscope to Pin !§ of CN6202 (ADJ VG),
connect Pin !§ of CN6202 and Pin @¶ (or @•) of CN6200 (3.1V
power supply) with a 3.3 kΩ resistor.
3.3 kΩ resistor: 1-249-423-11
Adjusting method:
1) Set data: 01 to page: 1, address: 00.
2) Set data: 02 to page: 2, address: 49.
3) Set data: FF to page: 5, address: 00.
4) Change the data of page: D,address:E6, and set the VG signal
level (A) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6) Set data: 00 to page: 2, address: 49.
7) Set data: 30 to page: 5, address: 00.
8) Set data: 00 to page: 1, address: 00.
6-23
VTR playback
Optional recorded tape
Pin !§ of CN6202 (ADJ VG) or pin 2
of CN5600 (PANEL G) on PD-71
board
Oscilloscope
D
E6
A = 0.32 ± 0.05V
H
Fig. 6-1-15.
A
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