Diagnostics And Service Information - GE Spacemaker JVM1665 User Manual

Diagnostics and Service Information

Diagnosis Flow Chart
Y
N
OPEN DOOR IS OVEN CHECK
LIGHT "ON"? • LIGHT
• DOOR S/W AND MAIN RELAY
Y
• WIRING
• CLOSE DOOR
• RUN CONTROL
PERFORMANCE TEST
(SEE TEST)
TOUCH START
• DOES IT PASS?
Y
OPEN LIGHT &
LARGE WATER LOAD
BLOWER "ON"
& NEON IN OVEN
AND STAYS "ON"?
PROGRAM TIME COOK
MW PWR "ON"?
N
30 MIN DOES OVEN
(NEON LIGHT)
START WITHOUT
TOUCHED "START"?
• CHANGE TO PWR 5
Y
• NEON CYCLE?
• CLEAR OFF &
• ONLY LIGHT LIGHT FAN
& &
FAN ON MW PWR
• DOES IT TURN "OFF"?
• NO MW PWR "ON"
REPL SMART • SMART BOARD
BOARD OR
KEY PANEL
TOUCH "OFF" PADS TURN "OFF"?
Y N
NORMAL KEY PANEL
OR
SMART BOARD
VENT FAN OR LIGHT "ON" ONLY
WHEN PAD TOUCHED
REPLACE SMART
BOARD
DISPLAY LIT
• CANNOT SET CLOCK
• NO OR ONLY SOME PADS WORK
• DISPLAY NOT WHAT ENTERED
• ERRATIC DISPLAY
N
• NO BEEP
• DISPLAY GOES BLANK, FF, RESET
• CANNOT CLEAR DISPLAY
Y
N
• VERIFY XFMR VOLTS
Y
N
• SMART BOARD
• KEY PANEL
Y
N
PERFORM KEY PANEL TEST
Y
PROGRAM 30 SEC
START & TIME OUT
• WITH OVEN RUNNING
N
OVEN LIGHT & BLOWER
• OPEN & CLOSE DOOR
• LIGHT & BLOWER
TOUCH FAN & LIGHT PADS
Y
VENT FAN & LIGHT "ON"
AND STAYS "ON"?
CHECK SMART BOARD 16PIN PLUG
• VENT FAN AT 5-12
• SURFACE LIGHT AT 6-12
Y
• PLUGS
• WIRING
• LAMPS
• FAN OR
• SMART BOARD
OK?
Y N
REPL
OR XFMR
CHECK POWER
CHECK NEON CYCLE CONTROL RELAY
TURNED ON
REPLACE SMART
BOARD
SMART BOARD
OR HV SECT
STILL ON
STILL ON
SMART BOARD
ONLY FAN
OR
LIGHT WORKS
N
• SMART BOARD
OR
• KEY PANEL
– 27 –
N
CHECK
• 120V SUPPLY
• 20A FUSE
• (IF BLOWN CHECK VARISTOR)
• MAGN TCO & OVEN CUTOUT.
• CONTROL XFMR VOLTS
ALL OK?
Y N
• XFMR PLUGS REPAIR
OR
• SMART BOARD
CAUTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
SENSITIVE DEVICES
NO OVEN LIGHT LIGHT & BLOWER ON
& ONLY WHEN START
NO BLOWER PAD TOUCHED
WITH START PAD REPLACE SMART
TOUCHED CHECK
LIGHT/BLOWER 5-12
VDC PLUG
Y N
CHK WINDINGS INTERLOCKS DOOR
AT PLUG SWITCH CONTROL
XFMR KEY PANEL OR
SMART BOARD
NO FAN
&
NO LIGHT
CHECK
• 120V SUPPLY
• IF 20A FUSE BLOWN, CHECK
VARISTOR.
• MAGN TCO ALL OK?
Y N
• XFMR REPAIR
• PLUGS OR
• SMART BOARD
(Continued next page)
BOARD