1-26 (No.YA385)
3.2
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.
3.2.1 MEMORY IC LIST
3.2.2 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.
3.2.3 SERVICE MODE SETTING
SERVICE MODE SCREEN
Fig.1
SETTING ITEM
Simbol
Number of pins
Mounting PWB
Main content of data
IC4003
32-pin
DIGITAL SIGNAL PWB
Programme (video process) of
IC4001
(DIST) is memorized.
IC4004
8-pin
DIGITAL SIGNAL PWB
Setting value of
IC4001
(DIST) is memorized.
IC7002
8-pin
DIGITAL SIGNAL PWB
Setting value of
IC7001
(SUB [CHASSIS] CPU) is memorized.
IC7602
8-pin
DIGITAL SIGNAL PWB
Setting value of
IC7501
(MAIN CPU) is memorized.
MAIN MENU SCREEN
ADJUSTMENT MODE SCREEN
S001 PREPARE 0
S001 PREPARE 0
PAL50 1409 STD H
PAL50 1409 STD H
SERVICE MENU
SERVICE MENU
1.ADJUST
1.ADJUST
2.SELF CHECK
2.SELF CHECK
3.I2C STOP
3.I2C STOP
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
