How To Check The Semiconductors Using An Ohm Meter; Exploded View And Parts List - Panasonic NN-V653WF Service Manual

SYMPTOM
Missing or lighting of incorrect
segment
H97/H98 appears in window
and oven stops operation.
Program High power for 1
minute and conduct following
test quickly, unless H97/H98
appears and oven stops. [NEW
H.V.]
CONTINUED FOR SENSOR MODELS
Auto sensor cooking does
not operate normally.
(Steam Sensor cooking does
not detect steam from foods.)

9.4. How to check the semiconductors using an OHM meter

10. EXPLODED VIEW AND PARTS LIST

CHECK
STEP
1 Replace IC-1 and
check operation
1 Unplug CN702(2 pin)
connector and
measure voltage
between terminals
2 Unplug CN701(3 pin)
connector and
measure pin 1 voltage
1
Steam sensor terminal
voltage by using high
impedance tester (20k
/ V),while breathing
on metal surface of
sensor
33
RESULT
Normal
Abnormal
0V
AC line voltage of 230-
240V
0V
Approx. AC 3V
Abnormal = 0V Steam sensor
Normal>10-30mV IC-1
CAUSE
CORRECTIONS
IC-1
DISPLAY
1. Latch
2. DPC/Power
Relay
Step
DPC
Magnetron