JVC PD-Z50DX4, Service Manual

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1-18 (No.YA229)
3.3 MEMORY IC REPLACEMENT
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.3.1 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting values.
3. Power on
Connect the power plug to the AC outlet and switch on the power.
4. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described.
5. User setting
Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.
6. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is necessary (Fig.1). Refer to the SERVICE ADJUSTMENT for setting.
3.3.2 SERVICE MODE SETTING
„ SERVICE MODE SCREEN
Fig.1
„ SETTING ITEM
MAIN MENU SCREEN
ADJUSTMENT MODE SCREEN
S001 PREPARE 0 S001 PREPARE 0
PAL50 FULL STD M PAL50 FULL STD M
1.ADJUST 1.ADJUST
2.SELF_CHK 2.SELF_CHK
3.I2C STOP 3.I2C STOP
SERVICE MENU SERVICE MENU
Setting items Settings Item No.
Video system setting Adjust S001 - S039
Audio system setting Fixed T001 - T010
Panel control system setting Fixed P001 - P010
Drive system setting Fixed D001 - D187
Main CPU system setting Fixed Z001 - Z010