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Merrychef 402s Service & Parts Manual
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51
402s Ovens Part. N
o.
32Z3539 Issue 5
PCB Visual Check
Hardw
are fitted
against PCB visual
Supports
Oven
Upgrade
to V3
Allowable
Version /
Firmware
SSR
Mag
Detect
ONLY ON
V2 ovens
4.4SD
ON V2.5
ovens
4.4SD
or higher
ON V3
Ovens
3.0LD
or higher
No pin str
ip
Device
secured to
plate
Pin strip f
itted but
no optics board
Device
free
standing
3.0 How to
check your
hardware fitted:
3.1
Remove the oven lid to reveal the Logic PCB. See Table 2a below
TABLE 2B Hardware Upgrade
Hardw
are Upgrade
Technical Bulletin
Required
V2
oven
V2.5
oven
V3
oven
Adding Ma
gnetron Detec
t
TB11
4
TB114
Adding Solid State Relay
TB12
2
TB12
2
Revision 1
Revision 2
TABLE 2A
50
52
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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