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402s
Merrychef 402s Service & Parts Manual
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47
402s Ovens Part. N
o.
32Z3539 Issue 5
AP
PE
N
DI
X
5
:
LOGIC
PCB Connection Points and key features.
Displa
y
Connecter
Relay PCB
15 wa
y
Connecter
Motor speed
controller
Membrane panel
connector
MenuKey
Socket
Connector
Door
Switch IP
Program
memory storage.
Chip may be
exchanged
with New PCB if
PCB replaced.
D7 Power LED
Indicates Logic PCB
is powered
See Troubleshooting
Guide
Door switch
Indicator
ON
wh
en door
closed
Temp Calibra
tion
Remote data
point
Spare input
(not used)
Fibre Optic
Detector 1 to LHS
Fibre Optic
Detector 2 to RHS
Magnetron
2
Magnetron
1
Fibre Optic Magnetron
Detection
Solid State R
elay
Heater regulation
circuit
46
48
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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Installation And Operating Instructions
43 pages
5
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Merrychef 402s Specifications
General
Brand
Merrychef
Model
402s
Category
Microwave Oven
Language
English
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