JVC HD-52Z585 Service Manual page 20

3.2 MEMORY IC REPLACEMENT
3.2.1 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.
3.2.2 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. SERVICE MENU setting
Before entering the SERVICE MENU, confirm that the setting
of TV/CATV SW of the REMOTE CONTROL UNIT is at the
"TV" side and the setting of VCR/DVD SW of the REMOTE
CONTROL UNIT is at the "VCR" side. If the switches have not
been properly set, you cannot enter the SERVICE MENU.
1) Press [SLEEP TIMER] key and while the indication of
SLEEP TIMER 0 MIN is being displayed, press
[DISPLAY] key and [VIDEO STATUS] key (Fig.2)
simultaneously.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) Verify what to set in the SERVICE MENU, and set
whatever is necessary (Fig.1).
Refer to the SERVICE ADJUSTMENT for setting.
4) Press the [BACK] key to return the SERVICE MENU.
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 after page.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) and set the items as
described.
1-20 (No.YA092B)
SERVICE MENU SCREEN
SERVICE MENU
1. ADJUST
2. SELF-CHECK
3. I2C STOP
3.2.3 SERVICE MENU SETTING ITEMS
Setting item
1.ADJUST
VIDEO SYSTEM
AUDIO SYSTEM
PANEL CONTROL SYSTEM P001~P010
DRIVE SYSTEM
SYSTEM SETTING
TV CATV VCR DVD
TV / CATV
(Set toTV)
TWIN
FREEZE
INPUT 1
V1
INPUT 2
Number key
V2
INPUT 3
V3
INPUT 4
V4
DIGITAL-IN
D-IN
SLEEP TIMER
SLEEP TIMER DISPLAY
(Skip / Enter the SERVICE MENU)
MUTING MUTING
(Memory key)
VOL
FUNCTION
(Value setting key)
MENU
VCR CHANNEL
PREV NEXT
MENU
(Come out SERVICE MENU key )
REW
REC
OPEN CLOSE
Fig.1
Item No. Remark
S001~S039
Adjust
T001~T010
Do not adjust
D001~D187
(Fixed value)
Z001~Z010
POWER
ASPECT POWER
MULTI SCREEN
INDEX
VCR/DVD
SWAP SELECT
(Set to VCR)
SERVICE MENU
1 2 3
ITEM SELECT KEY
4 5 6
7 8 9 &
1 3 9
RETURN+
0
TUNE TV
THEATER VIDEO
PRO STATUS
VIDEO STATUS
SOUND LIGHT
+
DISPLAY
C.C.
(Enter the SERVICE MENU)
C.C.
CH
VOL
OK
FUNCTION
CH
(SERVICE ITEM select key)
BACK
VCR / DVD
POWER
TV / VCR
BACK
(Return key)
PLAY FF
STOP PAUSE
STILL PAUSE
RM-C15G
Fig.2