Circuit Adjustments; Setting The Service Adjustment Mode; Memory Write Conþ Rmation Method; Remote Adjustment Buttons And Indicators - Sony Trinitron KV-20FS100 Service Manual

ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER
Use the Remote Commander (RM-Y172, RM-Y173, RM-Y180) to perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
4-1. SETTING THE SERVICE ADJUSTMENT
MODE
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a
second of each other:
Display Channel 5
SERVICE ADJUSTMENT MODE ON
1. The CRT displays the item being adjusted.
Mode Category
service
Signal
ntsc
Type
vchp 00000000
2. Press 1 or 4 on the Remote Commander to select the item.
3. Press 3 or 6 on the Remote Commander to change the data.
4. Press MUTING then ENTER to write into memory.
SERVICE ADJUSTMENT MODE MEMORY
Mode Category
service defl hsiz
Signal
ntsc
Type
vchp 00000000
1. Press 8 then ENTER on the Remote Commander to initialize.
Display
Mode Category Item
service defl hsiz
Signal write
ntsc
Type
vchp 00000000 00000000
2. Turn set off then on to exit Service Adjustment Mode.
SECTION 4: CIRCUIT ADJUSTMENTS
Sound Volumne +
Display
Item
Item
Data
defl hsiz 16
00000000
Display Item
Item Data
MUTING
Green
16
write
00000000 ENTER
Item
Data
MUTING
Green
16
ENTER
Red
Carry out Step 1 when adjusting
IDs 0-6 and when replacing and
adjusting IC002
4-2. MEMORY WRITE CONFIRMATION
METHOD
1. After adjustment, pull out the plug from the AC outlet, then replace
the plug in the AC outlet again.
2. Turn the power switch ON and set to Service Mode.
3. Call the adjusted items again to confi rm they were adjusted.
Power
4-3. REMOTE ADJUSTMENT BUTTONS AND
INDICATORS
MUTING
(Enter into
memory)
1
Disp. (Item up)
2
(Device Item Up)
4
Disp. (Item down)
Red
8
(Initialize)
VOLUME (+)
(Service Mode)
— 17 —
KV-20FS100/20FV300/21FM100/21FS100/
21FV300/24FV300/25FV300
POWER
(Service Mode)
DISPLAY
(Service Mode)
3
Item
(Data up)
6
Item
(Data down)
5
(Device item
down)
ENTER
(Enter into
memory)
0
(Remove from
memory)
RM-Y180