ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: ?CBA? is abbreviation for How to set up the service mode:
?Circuit Board Assembly.?
Service mode:
Note: Electrical adjustments are required after
replacing circuit components and certain 1. Use the service remote control unit.
mechanical parts. It is important to perform 2. Turn the power on. (Use main power on the TV
these adjustments only after all repairs and unit.)
replacements have been completed.
3. Press [SLEEP] button on the service remote
Also, do not attempt these adjustments unless
control unit. Version of micro computer will display
the proper equipment is available.
on the CRT. (Ex: 058-0.06)
4. Check the display on the lower left is ?3200? and if
Test Equipment Required
it is not ?3200,? set it at ?3200? according to "Initial
1. NTSC Pattern Generator (Color Bar W/White Setting" on page 5-2.
Window, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)1. +B Adjustment
2. DC Voltmeter
Purpose: To obtain correct operation.
3. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50 V/Div, Symptom of Misadjustment: The picture is dark and
F-Range: DC~AC-60 MHzthe unit does not operate correctly.
4. Plastic Tip Driver
Test PointAdj. PointModeInput
5. Remote control unit: Part No. N0108UD,
TP601(+B)
N0132UD, NE121UD or NE122UDVR661------
TP300(GND)
6. DC power supply 13.2V/5A
TapeM. EQ.Spec.
How to make Service remote
---DC Voltmeter+120?0.5 V DC.
control unit:
Note: TP601, TP300(GND), VR661 --- Main CBA
1. Prepare normal remote control unit. (Part No.
1. Connect DC Volt Meter to TP601 and
N0108UD, N0132UD, NE121UD or NE122UD)
TP300(GND).
Remove 3 Screws from the back lid. (Fig. 1-1)
2. Adjust VR661 so that the voltage of TP601
Screwsbecomes +120?0.5 V DC.
Remote control unit (bottom)
Fig. 1-1
2. Added J1 (Jumper Wire) to the remote control
CBA. (Fig. 1-2)
J 1
Remote Control CBA
Fig. 1-2
5-1L3400EA |