Service Adjustments With Replacing Memory Ic(Ic802) - Sanyo CM21SP81 Service Manual

Service Adjustments with Replacing Memory IC(IC802)

Note: The CPU (IC801) and memory IC (IC802) store the service adjustments data and controls data for each
circuit.When the Memory IC(IC802) is replaced, some of the service adjustments should be readjusted to
obtain the best performance. The necessary service adjustments are carried out by using the RC handset.
Please set up the TV set with following steps [1] to [2].
[1] Initializing Procedure
1.
Put a new memory IC.
2.
Turn on the TV set.
3.
Press and hold the TV/AV Selector on the TV set for more than 2 seconds. The following picture appears on the
screen.
4.
Press the PROGRAMME UP on the TV set while the above On-Screen Display is still on the screen. The following
picture appears on the screen.
This completes the initialization of memory IC.
Following shows the initialized contents of memory data by this procedure.
- Plug & play
- Inhibit data
- Ch skip data
- Sound volume data
- Volume Lock
- Tuning Lock
- Colour system
[2] Required Service Adjustments
Readjust the following service adjustments.
Adjustments
RF AGC
Horizontal centre
Vertical size
Vertical-S correction
Vertical linearity
Gray scale
Further adjustment please refer to page 12 and 13.
CLR
1
: No executed
: Cancelled
: Cancelled
: 10/63 steps.
: OFF
: OFF
: AUTO
Service Mode No. & Item
Item 01, RF AGC
Item 02, H-PHA
Item 04, V-SIZ
Item 05, V-SCO
Item 06, V-LIN
Item 14-17, 19-21
TV /AV ME NU
Press and hold for more than 2 seconds
-8-