JVC LT-26A80SU Service Manual page 15

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 TABLE
Simbol Number of pins
IC7003 8-pin MAIN PWB
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.3-2). Refer to the SERVICE ADJUSTMENT for
setting.
3.2.3 SERVICE MODE SETTING
SERVICE MODE SCREEN
SERVICE MODE SCREEN
SERVICE MENU SERVICE MENU
1.ADJUST 1.ADJUST
2.SELF_CHECK 2.SELF_CHECK
3.I2C STOP 3.I2C STOP
Press [1] key
1. ADJUST
ADJUST ADJUST AUTO AUTO FUL
1.SC ADJ 1.SC ADJ
SC DEV:+ SC DEV:+
- + - + OK:STORE OK:STORE
Mounting PWB
FUL
14 14
0 0
i=EXIT i=EXIT
Fig.3-2
Main content of data
Setting value of IC7001(MAIN CPU) is memorized.
SETTING ITEM
Setting mode Setting items
1.ADJUST 1.SC ADJ.
2.R DRIVE
3.G DRIVE
4.B DRIVE
5.CUTOFF R
6.CUTOFF G
7.CUTOFF B
8.COLOUR
9.HUE
10.CONTRAST
11.BRIGHT
12.SHARP
13.DC EXTMD
14.PWM EXTMD Fixed [Do not adjust]
Settings
Adjust
Adjust
Adjust
Adjust
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
Fixed [Do not adjust]
(No.YA509)1-15