WARNING TO SERVICE PERSONNEL
TABLE OF CONTENTS
SERVICE MANUAL
WARNING TO SERVICE PERSONNEL
BEFORE SERVICING
When the testing is completed
WARNING TO SERVICE PERSONNEL
After repairing
Before Servicing
C. Leakage test
MICROWAVE MEASUREMENT PROCEDURE
B. Preparation for testing
A. Requirements
If provided, Vent Hood, Fan assembly, Cooling Fan Motor
DANGER
1440 Bridge Gate Dr Diamond Bar, CA
SERVICE MANUAL
DESCRIPTION
MICROWAVE DRAWER SPECIFICATION
GROUNDING INSTRUCTIONS
GENERAL INFORMATION
OFF CONDITION
POWER LEVEL P-0 TO P-90 COOKING
OPERATION
DESCRIPTION OF OPERATING SEQUENCE
SENSOR COOKING CONDITION
Cooking Sequence
MICROWAVE
SCHEMATIC OFF CONDITION
CLOSED, COOK OFF CONDITTION
DOOR
Before testing
TEST PROCEDURES
PROCEDURE
A TOUCH CONTROL PANEL ASSEMBLY TEST
LETTER
TEST PROCEDURES
PROCEDURE
COMPONENT TEST
LETTER
TEST PROCEDURES
PROCEDURE
Check supply voltage and oven power cord
COMPONENT TEST
TEST PROCEDURES
PROCEDURE
TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT
LETTER
TEST PROCEDURES
PROCEDURE
COMPONENT TEST
G MAGNETRON ASSEMBLY TEST
Refer to the disassembly instructions found on Page
TEST PROCEDURES
PROCEDURE
J STOP SWITCH TEST
TEST PROCEDURES
PROCEDURE
I SECONDARY INTERLOCK SWITCH TEST
COMPONENT TEST
TEST PROCEDURES
PROCEDURE
M POWER TRANSFORMER TEST
5 Indicator Circuit
TOUCH CONTROL PANEL ASSEMBLY
Control Unit and Power Unit
4 Reset Circuit
Internal clock oscillation frequency setting input
DESCRIPTION OF LSI IC-1
Power source voltage 0V GND
Power source voltage 0V GND
Signal coming from touch key
Signal
Common data signal
Segment data signal
Signal to sound buzzer
Signal
Magnetron high-voltage circuit driving signal
Common relay driving signal. Square Waveform 60Hz
2 Operational Principle of Humidity Sensor
HUMIDITY SENSOR CIRCUIT
ventilation opening for sensing
1 Structure of Humidity Sensor
2. Servicing of Touch Control Panel
TOUCH CONTROL PANEL SERVICING
1 Servicing the touch control panel with power supply of the oven
4. Other Precautions
3. Soldering
PRECAUTIONS FOR USING LEAD-FREE SOLDER
2. Using lead-free wire solder
1. Employing lead-free solder
To prevent an electric shock, take the following pre- cautions
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING FOR WIRING
WARNING AGAINST HIGH VOLTAGE
MICROWAVE DRAWER DISASSEMBLY
Un-hook/Attach Ground to metal Tab on Back Plate
POWER CORD REPLACEMENT
Un-hook/Attach Black AC Wire to Top Terminal
Un-hook/Attach White AC Wire to Bottom Terminal
After adjustment, check the following
STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
Re-install
1. Follow the Microwave Drawer disassembly as previously
DRAWER ASSEMBLY AND CHOKE REMOVAL
DRAWER SUPPORT ANGLE REMOVAL
DRAWER/SLIDE RAIL REMOVAL
Actuator adjustment
SWITCH ANGLE REMOVAL/ADJUSTMENT
SWITCH ANGLE REMOVAL
ACTUATOR REMOVAL/ADJUSTMENT
Installation
AUTO DRAWER GEAR REMOVAL/INSTALLATION
Bottom cover
RACK GEAR REMOVAL
to Back Plate
HIGH VOLTAGE COMPONENTS
MMD24S
MMD24B
CN-A
Figure S-2. Power Unit Circuit
MICRO
FM A
UNIT
UNIT
CONTROL
MMD24S MMD24B
A B C D E F G H
Figure S-4. Printed Wiring Board of Power Unit
2.5A
MMD24S MMD24B
UnitControlof
5.PrintedWiringBoard
MMD24S
MMD24B
MMD24S MMD24B
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