Circuit Adjustments; Setting The Service Adjustment Mode; Memory Write Confirmation Method; Adjust Buttons And Indicators - Sony TRINITRON KV-20M42 Service Manual

Electrical Adjustment by Remote Commander
Use the Remote Commander (RM-Y155) to perform the circuit adjustments in this section.
NOTE: Test Equipment Required:
• Pattern generator
• Frequency counter
• Digital multimeter
• Audio oscillator

5-1. Setting the Service Adjustment Mode

1. Standby mode (power off).
2. Display
Channel 5
on the Remote Commander (press each button within
a second).
Service Adjustment Mode On
1. The CRT displays the item being adjusted.
Disp.
(Item)
SERVICE
2. Press or on the Remote Commander to select
an item.
3. Press or on the Remote Commander to change
the data.
4. Press then
Service Adjustment Mode Memory
SERVICE WRITE
1. Press then on the Remote Commander to
initialize.
SERVICE RESET
Carry out step 1 when adjusting
IDs 0–4 and when replacing
and adjusting IC003.
2. Turn set off then on to exit service adjustment mode.
KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/
SECTION 5

CIRCUIT ADJUSTMENTS

+
Sound volume Power ON
Item
Data
HSIZ 0
to save into the memory.
MUTING
Green
ENTER
Red
— 19 —
21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C

5-2. Memory Write Confirmation Method

1. After adjustment, remove the power plug from the AC
outlet, then plug it in again.
2. Turn the power switch ON and set to service mode.
3. Call the adjusted items again to confirm they were adjusted.

5-3. Adjust Buttons and Indicators

MUTING
MUTING
SLEEP
Write into memory
MTS DISPLAY
DISPLAY
Service mode
1
1
Item up
4
4
Item down
7
JUMP
RESET
VOL(+) VOL
+
Service mode
–
RM-Y155
POWER
POWER
Service mode
TV/VIDEO
Data up
3
2 3
6 Data down
5 6
5 Service mode
8 9
ENTER 8
Initialize
0
ENTER
MENU
Write into memory
SELECT
CH
+
–