1-5. LCD SYSTEM ADJUSTMENT1. VCO Adjustment (PD-110 board)
Note 1:The back light (fluorescent tube) is driven by a high vSet the oltage VCO free-rACun frequency. If deviated, the LCD screen will
power supply. Therefore, do not touch the back light holder tobe blurred.
avoid electrical shock.
Note 2:When replacing the LCD unit, be careful to prevent damagesModeVTR stop
caused by static electricity.Signalarbitrary
Note 3:Set the LCD BRIGHT to the center.
Measurement Point9Pin of CN2904 (H START) on
Set the LCD COLOR (Menu display) to the center.VC-217 board
[Adjusting connector]Measuring Instrument Frequency counter
Most of the measuring points for adjusting the LCD system areAdjustment PageD
concentrated in CN2904 of the VC-217 board.Adjustment Address84
Connect the Measuring Instruments via the CPC-8 jig (J-6082-388-Specified Valuef = 15734 ? 30Hz (NTSC)
A).
The following table shows the Pin No. and signal name of CN2904.f = 15625 ? 30Hz (PAL)
Pin No.Signal NamePin No.Signal NameAdjusting method:
1LANC SIG2EVF BL +1) Select page: 0, address: 01, and set data: 01.
3EVF BL �4EVF VG2) Select page: 3, address: 0C, set data: 20, and press the PAUSE
5EVF VCO6GNDbutton of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 03, and press the PAUSE
7PD VG8PD VCObutton of the adjustment remote commander.
9H START10XHD/PSIG
4) Select page: D, address: 84, change the data and set the
11PANEL COM12TMSfrequency (f) to the specified value.
13TCK14TDI5) Press the PAUSE button of the adjustment remote commander.
15TDO16GND6) Select page: 3, address: 22, set data: 00, and press the PAUSE
17SWP18RF IN/LANC JACK INbutton of the adjustment remote commander.
19GND20RF MON7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
Table 5-1-8.8) Select page: 0, address: 01, and set data: 00.
CN2904
12
1920
Remove the CPC cover
Fig. 5-1-17.
5-31 |
ACEC
