COMPONENT
CHECKOUT PROCEDURE
RESULT
Measure the resistance : Across two terminals
Normal reading :
with an Ohm-Meter on highest scale.
Momentarily indicates several ohms,
and gradually returns to 10 Meg-Ohms.
Abnormal reading :
Indicates continuity or 10 Meg-Ohms
from the beginning.
Measure the resistance : Across two terminals
Normal reading :
with an Ohm-Meter on R x 10,000 scale.
Indicates about the middle position in
one direction (forward direction) and
infinite ohms in the reverse direction,
using meter which is provided with a
9 volt battery.
NOTE
- Some digital meter may show over
even in a forward direction because
low measuring voltage of meter does
not allow the meter current to pass
through the High Voltage Diode.
Abnormal reading :
Indicates continuity or infinite Ohms
in both directions.
Measure the resistance : Across two terminals
Normal reading :
with an Ohm-Meter on highest scale.
Indicates infinite Ohms in both directions.
Abnormal reading :
Indicates continuity in both directions
or continuity in one direction and
infinite Ohms in reversed direction.
Measure the voltage : Between test point TP-1,
TP-2, TP-3 or TP-4 and Ground (See Control
Circuit Board on page 19).
NOTE
- Proceed with the check of the Step-Down
Transformer, to see if any one of the measured
values is different from the specified values.
Ohm-Meter
Figure 7
Ohm-Meter
- 5 -
Figure 8
Figure 9
Ohm-Meter
HIGH-VOLTAGE
CAPACITOR
including
BLEEDER
RESISTOR
HIGH-VOLTAGE
DIODE
FUSE DIODE
CONTROL
CIRCUIT
BOARD
Test
TP-1 TP-2 TP-3 TP-4
Point
Voltage
-5V
-15V -27V -31V
DC
DC
DC
DC
