JVC PD-Z50DX4/S Service Manual page 18

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
MAIN MENU SCREEN
SERVICE MENU SERVICE MENU
1.ADJUST 1.ADJUST
2.SELF_CHK 2.SELF_CHK
3.I2C STOP 3.I2C STOP
ADJUSTMENT MODE SCREEN
S001 PREPARE S001 PREPARE
PAL50 PAL50 FULL FULL
1-18 (No.YA229)
0 0
STD STD M M
Fig.1
SETTING ITEM
Setting items
Video system setting
Audio system setting
Panel control system setting
Drive system setting
Main CPU system setting
Settings Item No.
Adjust S001 - S039
Fixed T001 - T010
Fixed P001 - P010
Fixed D001 - D187
Fixed Z001 - Z010