Service Menu - JVC AV-27F577/R Service Manual

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
IC702 8-pin MAIN PWB
3.2.2 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug.
2. Replace the memory IC
Be sure to use a memory IC written with the initial setting data.
3. Power on
Connect the power cord to the wall outlet and switch on the
power.
4. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE)
and set the receive channels (Channels Preset) as described.
5. User settings
Check the user setting items according to the "FACTORY
SETTING ITEM" table.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) 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.
Mounting PWB
Setting value of Initial setting data is memorized.
Main content of data
3.2.3 SERVICE MODE SETTING ITEMS

Service Menu

Service Menu
1.Digital Service
2.TV-Micro Service
3.Conver Service
4.Diagnostics
Press [2] key
Digital Service
Digital Service
1.Adjust
2.Memory Edit
3.Edit Config
4.All Reset
5.Select Channel Map
6.Clear Channel Map
7.Digital Tunig Test
TV-Micro Service
TV-Micro Service
1.Adjust
2.White Balance
3.Memory Edit
Setting items
1. Digital Service
Audio system setting
2. TV-Micro Service
Video system setting
Deflection system
Factory system setting
Press [1] key
Fig.1
Settings Item No.
Adjust A001~A010
Adjust S001 - S045
Adjust D001 - D033
Fixed F001 - F003
(No.YA387)1-9