29C-FX10T
29C-FH100T
INSTALLATION AND SERVICE INSTRUCTIONS
Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic
screwdrivers or TV alignment tools.
(2) Before performing adjustments, the TV set must be on at least 15 minutes.
CIRCUIT PROTECTIONHIGH VOLTAGE CHECK
The receiver is protected by a 5.0A fuseHigh voltage is not adjustable but must be checked
(F700), mounted on PWB-C, wired into oneto verify that the receiver is operating within safe
and efficient design limitations as specified checks
side of the AC line input.should be as follows:
X-RADIATION PROTECTOR CIRCUIT TEST1. Connect an accurate high voltage meter between
After service has been performed on the horizontalground and anode of picture tube.
2. Operate receiver for at least 15 minutes at 110-220V
deflection system, high voltage system, B+ system,AC line voltage, with a strong air signal or a properly
test the X-Radiation protection circuit to ascertaintuned in test signal.
proper operation as follows:3. Enter the service mode and select the service
adjustment "S21" and Bus data "01" (Y-mute on).
1. Apply 110-220V AC using a variac transformer for4. The voltage should be approximately 32.0kV (at zero
accurate input voltage.beam).
2. Allow for warm up and adjust all customer controlsIf a correct reading cannot be obtained, check circuitry
for normal picture and sound.for malfunctioning components. After the voltage test,
3. Receive a good local channel.
4. Connect a digital voltmeter to TP1613 and make suremake Y-mute off to the normal mode.
that the voltmeter reads 18.1 ? 1.0V DC.
5. Apply external 23.2V DC at TP1613 by using an
external DC supply, TV must be shut off.
6. To reset the protector, unplug the AC cord and plug
the AC cord power on. Now make sure that normal
picture appears on the screen.
7. If the operation of the horizontal oscillator does not
stop in step 5, the circuit must be repaired before the
set is returned to the customer.
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ACEC
