Sony TRINITRON KV-20S90, Service Manual

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KV-20S90 / 21SE43C
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 Sound Volumne + Power
SERVICE ADJUSTMENT MODE ON
1. The CRT displays the item being adjusted.
Mode
Display
Item
Item
Data
SERVICE
HSIZ
0
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
WRITE
ENTER
Green
Red
MUTING
SERVICE
1. Press 8 then ENTER on the Remote Commander to initialize.
Mode
Carry out Step 1 when adjusting
IDs 0-7 and when replacing and
adjusting IC003
SERVICE RESET
2. Turn set off then on to exit service adjustment mode.
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.
4-3. REMOTE ADJUSTMENT BUTTONS AND
INDICATORS
SECTION 4: CIRCUIT ADJUSTMENTS
ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER
Use the Remote Commander (RM-Y155) to perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
RM-Y155
MUTING
DISPLAY
1
2
3
4
5
6
8
0
VOLUME (+)
POWER
ENTER
(Enter into
memory)
(Service Mode)
Disp. (Item up)
(Device Item Up)
Disp. (Item down)
(Initialize)
(Service Mode)
Item (Data up)
Item (Data down)
(Device item down)
(Enter into
memory)
(Remove from
memory)
(Service Mode)