Chart 1
Symptom:
Dead Set
Check Power Supply
J106-1 12V Stand-By
Pret* Power On
Button.
Check Power Supply
Panel Q1, 0 2 , 0 3 .
Note:
The SUrl-Up 24V la
Present Normally
For 2 Seconds. Then
24V Start-Up Is Shut
Down By Either
Derived 24V From
Deflection Panel Or
Its Timing Circuit
R5, CIO.
Check AC Inter-
connect Fuse Power
Supply Transistor T1,
Thermal Breaker®
Check TS Con-
troller IC1100,
IC1000.
Check Horizontal
Oscillator IC1. IC2
Or Replace Module.
Check Defection
Panel OS. 09, 010
Or Replace Panel.
Check TS Con-
troller IC1000, QS20,
0522 Or Replace
TS Controller.
Chart
2
Symptom:
No Audio, No
Video
Check
Tuner Interlace
Panel ,
Check: Deflection
Panel TP15, 018,
CS2 L4, C53.
Measure Tuner
Interlace Panel
TI
'B
Check: Deflection
Panel J204-4, C57,
C5S, R82.
Check Tuner Plugs
P21 And P22.
Use Tuner Plug
Charts.
Sub Tuner.
Replace Tuner.
Chart 3
Symplon:
No Audio
Plug Volt Ohm-
meter Into Tuner
Interlace Panel
Note:
1. Tune To A Live Channel
2. Use A Volt Ohmmeter With
An AC Output Measuring
Ability.
IF Module Sound
Detector Is Ok
Replace IF Module
Audio Circuits
Are Ok
Check Audio Signal
At I/O Panel
J7I2-3.1 With AC
Output Meier.
Check Slereo'SAP
Decoder Ptugs
P25-2.3. Or Replace
Stereo/SAP Decoder
Check Audio Signal
At Sound Processing
Module. J1104-1.4
With AC Output
Meter.
Check I/O Plug P718.
Butler s Q19. Q20.
And IC3. Or Replace
I/O Panel
Check Audio Signal
At Sound Processing
Module P1101-3.6
Replace Sound
Processing
Module
Check Audio Signal
Al Slereo Power
Amp Speaker Plug
J301-1.5
Check Stereo Power
Amp O203. Q204.
O202. Q201 Or
Replace Power Amp
Check Speaker
Wiring And Plug
P301
Use Audio Test
Chan 3. Use Video
Test Chart 4.
Check: TS Con-
troller
Or Replace
Controller.
