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AV-27GFH
MEMORY IC REPLACEMENT
1. Memory IC
This model uses a memory IC.
This memory IC stores data for proper operation of the video and deflection circuits.
When replacing, be sure to use an IC containing this (initial value) data.
2. Memory IC replacement procedure
(1) Power off
Switch off the power and disconnect the power cord from the wall outlet.
(2) Replace the memory IC
Initial value must be entered into the new IC.
(3) Power on
Connect the power cord to the wall outlet and switch on the power.
(4) System constant check and setting
* * * *
It must not adjust without signal.
1) Press SLEEP TIMER key and, while the indication of "SLEEP TIMER 0
MIN." is being displayed, press DISPLAY key and VIDEO STATUS key on
the remote control unit simultaneously.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) While the SERVICE MENU is displayed, again simultaneously press the
DISPLAY and VIDEO STATUS keys to display the Fig.2 SYSTEM
CONSTANT screen.
4) Refer to the SYSTEM CONSTANT table and check the setting items.
Where these differ, select the setting item with the MENU UP/DOWN key
and adjust the setting with the MENU LEFT/RIGHT keys. (The letters of the
selected item are displayed in yellow.)
5) After adjusting, release the MENU LEFT/RIGHT key to store the setting
value.
6) Press the EXIT key twice to return the normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and set the
receive channels (Channels Preset) as described.
(6) User settings
Check the user setting items according to Table 2.
Where these do not agree, refer to the OPERATING INSTRUCTIONS
(USER'S GUIDE) and set the items as described.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is necessary.
(Fig.1) Refer to the SERVICE ADJUSTMENT for setting.
10
REMOTO CONTROL KEY LOCATION
SERVICE MENU / SETUP MODE
/SYSTEM CONSTANT
Key
SETTING
VALUE &
SETUP MODE
No. 51806
SERVICE MENU
PICTURE
SOUND
THEATER
OTHERS
LOW LIGHT
HIGH LIGHT
RF AFC
VCO (CW)
I2C BUS CTRL
SELECT
BY
OPERATE BY
EXIT BY
Fig.1
SYSTEM CONSTANT
CCD
:
YES
BBE
:
NO
V-CHIP
:
YES
CAN V-CHIP :
YES
********* ***
********* ***
********* ***
********* ***
SELECT
BY
OPERATE BY
EXIT BY
Fig.2
SERVICE
MENU Key
MENU ITEM
UP(+) Key
SETTING VALUE
UP(+) Key &
SETUP MODE
SERVICE MENU
EXIT Key
MENU ITEM
DOWN(-) Key
SERVICE ITEM
DISPLAY Key
EX
IT
EX
IT
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