COMPONENT
COMPONENT
COMPONENT
COMPONENT
COMPONENT
CHECKOUT PROCEDURE
CHECKOUT PROCEDURE
CHECKOUT PROCEDURE
CHECKOUT PROCEDURE
CHECKOUT PROCEDURE
RESUL
RESUL
RESUL
RESUL
RESULTTTTT
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
NOTE
NOTE
NOTE
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 voltage : Between test point TP-1,
TP-2, TP-3, TP-4 or TP-5 and Ground between
TP-6 and TP-7 (See Control Circuit Board on
page 19).
NOTE
NOTE
NOTE
NOTE
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.
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
- 5 -
Test
TP-1
TP-2
TP-3
Point
Voltage
-5V
-15V
-25V
DC
DC
DC
Test
TP-4
TP-5
TP-6/
Point
TP-7
Voltage
-27V
-31V
2.0V
DC
DC
AC
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
Ohm-meter
HIGH-VOLTAGE
DIODE
CONTROL
CIRCUIT
BOARD
HIGH-VOLTAGE
CAPACITOR
including
BLEEDER
RESISTOR
