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Component Testing Procedures 

 

!

WARNING

 

To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor  
before servicing, unless testing requires power. 

 

June 2014 

 

16500054 

©2014 ACP, Inc.

 

5

 

H.V. Board 

– Connector Locations 

 

 

 

 

Function 

Test Set-Up 

Meter 

Setting 

Probe Placement 

Results 

Input to  

H.V. Board 

At H.V. board 

Volts 

J1-1 (white)  to 
J1-2 (brown) 

Line voltage 

Output to  

Display Board 

Disconnect  

J5 connector 

Volts 

J5-1  to  J5-47 

7.4 VDC 

 

Function 

Test Set-Up 

Meter 

Setting 

Probe Placement 

Results 

Blower Motor 208v 

Door Open 

Volts 

J2-4  to  J3-3 

208v 

Blower Motor 230v 

Door Open 

Volts 

J2-4  to  J3-1 

230v 

Convection Motor 208v 

Door Open 

Volts 

J2-4  to  J3-3 

208v 

Convection Motor 230v 

Door Open 

Volts 

J2-4  to  J3-1 

230v 

Antenna Motor 208v 

Door Open 

Volts 

J2-4  to  J3-3 

208v 

(

Note

: Blower Motor used as 

step-up transformer to provide 230v)

 

Antenna Motor 230v 

Door Open 

Volts 

J2-4  to  J3-1  

230v 

Microwave 

Service Test       
#3 

Volts 

J1-1  to  J2-3  

Line Voltage 

 
Heater  

Preheat On 
or Service 
Test #1 

 
Volts 

 
J1-1  to  J2-2  

 
Line Voltage 

 

 

Summary of Contents for Menumaster JET14

Page 1: ...scharge capacitor before servicing unless testing requires power Models JET14 JET19 Power Source Voltage AC 208 240 VAC 208 240 VAC Amperage Single Unit 16 A 26 A Frequency 60 Hz 60 Hz Single Phase 3 wire grounded YES YES Receptacle 6 20R 6 30R Plug 6 20P 6 30P Power Output Microwave Nominal microwave energy IEC705 1400 Watts 1900 Watts Minimum temperature rise 14ºF 7 5ºC 19ºF 10 5ºC Power Consump...

Page 2: ...ear is for Microwave In cook mode measure voltage from MT1 to Gate MT1 to MT2 0 8 VAC when energized If no voltage check H V board and wiring 0VAC Capacitor Discharge Capacitor Remove wires from capacitor terminals and connect ohmmeter on highest resistance scale or capacitance meter to terminals Also check between each terminal and capacitor case Capacitance Meter JET14 65µ JET19 85µ Ohm Meter Be...

Page 3: ... from Terminal 2 to 3 Terminal 7 to 8 Terminal 4 to 5 Door CLOSED measure resistance from Terminal 2 to 3 Terminal 7 to 8 Terminal 4 to 5 Open Infinite Ω Open Infinite Ω Open Infinite Ω Continuity 0Ω Continuity 0Ω Continuity 0Ω Convection Blower Motor Remove all wires from motor Measure resistance between Orange and Brown terminals Blue and Brown terminals Approximately 22 Ω Approximately 24 Ω Hea...

Page 4: ...and 1 Contacts 2 4 indicate Continuity 0Ω Contacts 6 8 indicate Continuity 0Ω Side Touch Panel Select Time Entry on Top Touch Panel and press each number pad to ensure proper operation Inspect for any damage Each number should operate with equal force If no response unplug the Top Touch Panel and test each pad again without selecting Time Entry If still no response replace the Side Touch Panel If ...

Page 5: ...isconnect J5 connector Volts J5 1 to J5 47 7 4 VDC Function Test Set Up Meter Setting Probe Placement Results Blower Motor 208v Door Open Volts J2 4 to J3 3 208v Blower Motor 230v Door Open Volts J2 4 to J3 1 230v Convection Motor 208v Door Open Volts J2 4 to J3 3 208v Convection Motor 230v Door Open Volts J2 4 to J3 1 230v Antenna Motor 208v Door Open Volts J2 4 to J3 3 208v Note Blower Motor use...

Page 6: ...r for ten seconds and record temperature 6 Subtract the starting water temperature from the ending water temperature to obtain the temperature rise 7 If the temperature rise meets or exceeds the minimum the test is complete If the temperature rise fails to meet the minimum temperature rise test the line voltage to verify it is correct Then repeat steps 1 6 making sure to change the water If the te...

Page 7: ...w Service Mode hz and amount of voltage applied to unit TO EXIT SERVICE MODE Press PAD RESULT 1 Heater On Off NOTE Amperage will be less than one 3 Magnetron On Off Amperage 12amps approx 4 Convection Fan Motor On Off Note Amperage will be less than one 5 Cooling Fan On Off Blower Motor 7 Magnetron Hours 8 Door Cycles Number of door openings 9 While in this mode pressing START will reset Magnetron...

Page 8: ...0 C Cycle 2 240 C 260 C 480 C 520 C 1000 C 1000 C 4 250 C average temperature If the average temperature is too high or too low the oven temperature offset needs to be calibrated Convection Temperature Calibration NOTE It is normal for the average oven temperature to vary from the oven setting by as much as 40 F 14 C Difference will not effect cooking since recipes are written with this difference...

Page 9: ... 4 Failed H V Board Replace H V Board Incorrect H V Board Installed in Oven Error Code 5 Shorted Touch Panel Note If touch panel is pressed for more than 30 seconds this error code will appear Disconnect Oven From Power Supply Disconnect Side Touch Panel Connector From Display Board Reconnect Oven to Power Supply If Error Code 5 Reappears After 30 Seconds Replace Top Touch Panel If Error Code 5 Do...

Page 10: ...m and Schematic W ARNING To avoid risk of electrical shock personal injury or death disconnect power to oven and discharge capacitor before servicing unless testing requires power 16500054 June 2014 2014 ACP Inc 10 ...

Page 11: ...m and Schematic W ARNING To avoid risk of electrical shock personal injury or death disconnect power to oven and discharge capacitor before servicing unless testing requires power June 2014 16500054 2014 ACP Inc 11 ...

Page 12: ...m and Schematic W ARNING To avoid risk of electrical shock personal injury or death disconnect power to oven and discharge capacitor before servicing unless testing requires power 16500054 June 2014 2014 ACP Inc 12 ...

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