Frigidaire GLBM188HB, Service Manual

Page: 2 / 47

Page 2
SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CHAPTER 1
WARNING TO SERVICE PERSONNEL. . . . . . . . . . . . . . . . . . . . . 4
[1] Before Servicing
[2] When Testing Is Completed
[3] After Repairing
CHAPTER 2.
MICROWAVE MEASUREMENT PROCEDURE. . . . . . . . . . . . . . 5
[1] Requirements
[2] Preparation For Testing
[3] Leakage Test
CHAPTER 3 .
FOREWORD AND WARNING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
[1] Foreword
[2] Warning
[3] Danger
CHAPTER 4.
PRODUCT DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
[1] Specifications
CHAPTER 5 .
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
[1] Grounding Instructions pg. 8
[2] Oven Diagram pg. 8
[3] Control Panel pg. 9
CHAPTER 6.
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
[1] Description Of Operating Sequence
Off Condition pg. 10
Cooking Condition pg. 10
Power Level pg. 10
Power Output Reduction pg. 10
Ventilation Methods pg. 10
Sensor Cooking Condition pg. 11
Cooking Sequence pg. 11
[2] Oven Schematic pg. 12
[3] Description And Function Of Components
Door Open Mechanism pg. 13
Door Sensing Switch pg. 13
Secondary Interlock Switch pg. 13
Monitor Switch pg. 13
Cavity Thermal Cut Out pg. 13
Turntable Motor pg. 13
Cooling Fan Motor pg. 13
Hood Fan Motor pg. 13
Thermostat [60° C ON] pg. 13
Antenna [Stirrer] Motor pg. 13
Cook Top Lamp pg. 13
CHAPTER 7.
TROUBLESHOOTING GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . . 14
[1] Troubleshooting Chart pg. 15
CHAPTER 8.
TEST PROCEDURES. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 16
[1] Magnetron Assembly Test pg. 16
[2] Power Transformer Test pg. 16
[3] High Voltage Rectifier Test pg. 16
[4] High Voltage Capacitor Test pg. 17
[5] Thermal Cutout and Temperature Fuse Test pg. 17
[6] Secondary Interlock Switch Test pg. 17
[7] Primary Interlock System Test pg. 18
[8] Monitor Switch Test pg. 18
[9] Blown Monitor Fuse Test pg. 18
[10] Hood Thermostat Test pg. 19
[11] Hood Fan Motor Test pg. 19
[12] Touch Control Panel Assembly Test pg. 19
[13] Key Unit Test pg. 21
[14] Relay Test pg. 21
[15] Open PWB Fuse Procedures pg. 22
[16] Humidity Sensor Test pg. 22
[17] Noise Filter Test pg. 24
CHAPTER 9.
TOUCH CONTROL PANEL ASSEMBLY. . . . . . . .. . . . . . . 25
[1] Outline Of Touch Control Panel Assy. pg. 25
[2] Humidity Sensor Circuit pg. 26
[3] Servicing For Touch
Control Panel pg. 27
CHAPTER 10.
PRECAUTIONS FOR USING LEADFREE SOLDER . . . . . . . . . . . 28
CHAPTER 11.
COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
[1] Warnings pg. 29
[2] Adjustments With Oven Installed pg. 29
[3] Removal Of Oven From Wall pg. 29
[4] Hood Louver Removal pg. 30
[5] Outer Case Removal pg. 30
[6] Power Transformer Removal pg. 30
[7] Hood Fan Motor, Hood Duct
Oven Lamp Socket, and
Humidity Sensor Removal pg. 30
[8] Magnetron Removal pg. 31
[9] High Voltage Rectifier and
Capacitor Removal pg. 31
[10] Hood Fan Thermostat Removal pg. 32
[11] Cooling Fan Removal pg. 32
[12] Turntable Motor Removal pg. 33
[13] Antenna (Stirrer) Motor Removal pg. 33
[14] Stirrer Cover and Antenna Installation pg. 33
[15] Oven Lamp Removal pg. 33
[16] Positive Lock Connector Removal pg. 33
[17] Right Panel Assembly and Power
Unit Removal pg. 33
[18] Door Switch Removal pg. 34
[19] Door Switch Adjustment pg. 34
[20] Door Replacement pg. 34
[21] Door Disassembly pg. 35
[22] Cooktop Lamp Socket Removal pg. 36
CHAPTER 12.
CIRCUIT DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
[1] Pictorial Diagram pg. 37
[2] Power Unit Circuit pg. 38
[3] Keypad Unit and Display Circuit pg. 39
[4] Printed Wiring Board (PWB) pg. 40
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
CONTENTS