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