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Merrychef 402s Service & Parts Manual
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48
402s Ovens Part. N
o.
32Z3539 Issue 5
AP
PE
N
DI
X
5
:
Rel
ay PCB Connection Points and key features.
AC input from
Aux Tra
nsformer
D20 LED
ON
when power is on
OFF
when Microwave is
operated.
Magentron
Overheat sensor
Inputs
Cavity
Temperature
Sensor
Input
Connector To
Logic PCB
D19
Heater
ON
U1 A
mbient air
temperat
ure
sensor
Piezo sounder
output
Fuse
Not Used
Display
Fuse
D16 Magnetron
soft start
D15 Magnetron
active
47
49
Table of Contents
Table of Contents
2
Safety Code
3
Product Specifications
4
Installation Instructions
5
Main Features
6
Electronic Control Panel
7
Main Features Control Panel Version 2.0
7
Main Features Control Panel Version 3.0
8
Principal Components: RHS
9
Principal Components: LHS
10
Principal Components: Control Box
11
Principal Components: Back View
12
Principal Components: Power Supply
13
Principal Components: Cavity Parts & KFC Accessories
14
Principal Components: External Panels & Parts
15
Principal Components: Electronic Control Panel Assembly
16
Parts Matrix
17
Procedure for Power Output Measurement
19
High Voltage Capacitor Test
20
Power Transformer Test
20
Procedures for Principal Component Tests
20
High Voltage Rectifier Test
21
Magnetron Test
21
Procedure for Door Interlock Adjustment
22
Procedure for Door Interlock Adjustment and Test
23
Hot Air Motor and Controller
25
Circuit Diagram
27
Troubleshooting Guide
35
Appendix 1: Temperature Sensor Resistance Data
40
Appendix 2: Menukey Download Procedure V2.0
41
Menukey Download Procedure V3.0
42
Appendix 3: Cool down & Cleaning Procedure
43
Appendix 4: Recommended Spares List
46
Logic Pcb Connection Points/Key Features
47
Fibre Optic Magnetron Detection
47
Appendix 5: PCB Connection Points
47
Appendix 6: Firmware Revision Guide
49
Appendix 7: Electrical Installation Guide
55
Manual Corrections and Modifications
56
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Merrychef 402s Specifications
General
Brand
Merrychef
Model
402s
Category
Microwave Oven
Language
English
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