ACP RC17S2, P1333401M, RC17SX, P1333402M, RC17SDOSI Service Manual

Commercial Microwave—Technical Information

208/230 VAC, 60 Hz Models

RC17S2 P1333401M RC17SX P1333402M
RC17SDOSI P1333403M RC22S2 P1333404M
DQ22HSI P1333405M MC23MPW2 P1333406M
MC23MPTW2 P1333407M WDYRC22 P1333408M
KFC2W2 P1333409M RC30S2 P1333410M

• Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or
repair of this unit.

• Refer to Service Manual for installation, operating, testing, troubleshooting, and disassembly instruction.

CAUTION

!

All safety information must be followed as provided in Service Manual.

!

WARNING

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

Models RC17S2

Power Source

Voltage AC 208/230 VAC 208/230 VAC 208/230 VAC 208/230 VAC 208/230 VAC
Amperage (Single
Unit)
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Single Phase, 3 wire
grounded
Receptacle 6-20R 6-20R 6-30R 6-30R **
Plug 6-20P 6-20P 6-30P 6-30P **

Power Output −
Microwave

Nominal microwave
energy (IEC705)
Operating Frequency 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz

Power Consumption

Microwave only 2700 Watts 3200 Watts 4400 Watts 4100 Watts 3200 Watts

Dimensions

Cabinet (in cm)

Width 19 1/4" 49 cm 19 1/4" 49 cm 19 1/4" 49 cm 19 1/4" 49 cm 19 1/4" 49 cm
Height 18 1/4" 46 cm 18 1/4" 46 cm 18 1/4" 46 cm 18 1/4" 46 cm 18 1/4" 46 cm
Depth 26 1/4" 67 cm 26 1/4" 67 cm 26 1/4" 67 cm 26 1/4" 67 cm 26 1/4" 67 cm

Oven Interior (in cm)

Width 13" 33 cm 13" 33 cm 13" 33 cm 13" 33 cm 13" 33 cm
Height 8 1/2" 22 cm 8 1/2" 22 cm 8 1/2" 22 cm 8 1/2" 22 cm 8 1/2" 22 cm
Depth 15" 38 cm 15" 38 cm 15" 38 cm 15" 38 cm 15" 38 cm

Weight

Uncrated 94 lbs. 94 lbs. 115 lbs. 115 lbs. 115 lbs.
Crated 101 lbs. 101 lbs. 123 lbs. 123 lbs. 123 lbs.

RC17SX

RC17SD2OSII

20 A 20 A 30 A 30 A 20 A

X X X X X

1700 Watts 2200 Watts 3000 Watts 2700 Watts 2000 Watts

RC22S2
DQ22HSI2
WDYRC22

RC30S2 KFC2W2 MC23MPTW2

MC23MPW2

** MC23MPTW2, MC23MPW2 uses 20A Twist−Loc NEMA L6-20P plug

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©2012 ACP, Inc.

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.

Illustration Component Test Results

MT2

MT1 GATE

Triac 1 (center)
Triac 2 (left)
Triac 3 (right

Thermal cutout Disconnect all wires from TCO.

Diode

Triac

Capacitor

Some units may use
more then one type of
capacitor. Refer to
Parts Manual for
correct capacitor
quantity.

Snubber assembly Disconnect wires to snubber.

Magnetron

Blower motor Remove all wires from motor.

Measure resistance across terminals.

Magnetron TCO ....................................

Cavity TCO ............................................

Discharge Capacitor

Remove diode lead from capacitor and
connect ohmmeter.

Reverse leads for second test.

Resistance Check

Disconnect wires to triac.

Measure resistance from:

MT1 to MT2 ...........................................

MT1 to Gate ..........................................

MT2 to Gate ..........................................

All terminals to ground ..........................

Voltage Check

Measure voltage from:

MT1 to Gate

Discharge Capacitor

Remove wires from capacitor terminals
and connect ohmmeter, set on highest
resistance scale to terminals.

Also check between each terminal and
capacitor case.

Measure resistance across terminals ........

Discharge Capacitor

Remove wires from magnetron and
connect ohmmeter to terminals. Also
check between each terminal and ground.

Measure resistance across coil .................

Open at 300°F (149°C) and
closed at 257°F (125°C)
Opens at 262°F (128°C)

Infinite resistance should be measured
in one direction and 50KΩ or more in
the opposite direction.

NOTE: Ohmmeter must contain a
battery of 6 volts minimum.

Caution - Do not operate oven with
wire to terminal MT2 removed.

Infinite
Approximately 60 Ω
Infinite
Infinite

0.8 VAC when energized. If no
voltage, check H.V. board and wiring.

Between Terminals: Meter should
momentarily deflect towards zero then
return to over 5 MΩ. If no deflection
occurs, or if continuous deflection
occurs, replace capacitor.

Terminal to Case: Infinite resistance

Infinite

Between Terminals: Less than 1 Ω

Each terminal to ground measures
Infinite resistance.
Note: This test is not conclusive. If
oven does not heat and all other
components test good replace the
magnetron and retest.

Approximately 25 Ω

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©2012 ACP, Inc.

Component Testing Procedures

4

!

WARN ING

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

Illustration Component Test Results

COM
0 V

120 V

COM

208

Auto Transformer

230

208 V

230 V

6

4

5

230

7

8

2

3

5

208

120

0

Transformer

COM

208 VAC

230 VAC

Interlock switch

Door Closed

2

4

7

Secondary

3

Primary

5

Monitor

8

Lamp receptacle

Discharge Capacitors

Remove all wires from terminals.

Measure resistance from:

230 V to 0 V ..............................................

208 V to 0 V ..............................................

120 V to 0 V ..............................................

Discharge Capacitor

Remove all wires from terminals.

5

Measure resistance from:

230 to COM ..............................................

6

208 to COM ..............................................

230 to Ground...........................................

208 to Ground...........................................

Terminal 5 to 6 .........................................

4

Terminal 4 to Ground ...............................

Disconnect wires to switch.

With door open measure resistance from:

Terminal 2 to 3 .........................................

Terminal 4 to 5 .........................................

Terminal 7 to 8 .........................................

With door closed measure resistance from:

Terminal 2 to 3 .........................................

Terminal 4 to 5 .........................................

Terminal 7 to 8 .........................................

Test continuity of receptacle terminals. Indicates continuity if bulb is good

(some models)

Approximately 38 Ω
Approximately 37 Ω
Approximately 25 Ω

Less than 1 Ω
Less than 1 Ω
Infinite
Infinite
Less than 1 Ω
Approximately 59 Ω

Infinite
Infinite
Indicates continuity

Indicates continuity
Indicates continuity
Infinite

and screwed in.

Refer to Parts Manual

Antenna motor Remove all wires from terminals.

Power cord Measure resistance of wires. Continuity should be indicated on
for proper power cord
part number.

January 2012 16500030

©2012 ACP, Inc.

Measure resistance from:

Terminal to terminal .....................................

3

Approximately 12K Ω

each wire.

Verify polarity and grounding.

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.

Illustration Component Test Results

Side touch panel

Top touch panel Removal of touch panel is required to

Continuity is indicated as 100 Ω and
below.

perform test.
Continuity is indicated as 100 Ω and
below.

Pad
1
2
3

1

4
5
6
7
8
9
0
Start
Stop/Reset

Pad
Time Entry
Power Level
Stage
Program Save
Quantity
Menu
Hidden Pad

Trace

3 & 5
3 & 6
3 & 7
3 & 8
3 & 9
4 & 5
4 & 6
4 & 7
4 & 8
4 & 9
5 & 6
6 & 9

Trace

5 & 7
5 & 8
5 & 9
6 & 7
6 & 8
7 & 9
8 & 9

Measurement

Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity

Measurement

Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity

Display board

Pin 1

Side
Touch
Panel

Pin 1

Pin 1

Connector

J5

A B

Test Points

Function Test Set-Up Meter

Setting

Input to Display

Board

At Display

Board

Volts Test points A and B 3.0 VAC

1

Interlock
Connector

J1

J6

Probe Placement Results

H.V. board
Connector

If voltage is present and no display is
indicated, replace display board.

If no voltage is present, check wire
harness connections and H.V. board.

Pin 1

J4

Top
Touch
Panel
Connector

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©2012 ACP, Inc.

Component Testing Procedures

!

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

H.V. board

E2

E1

E3

WARN ING

Pin 1

J1

Pin 1

J2

E4 E5

Pin 1

J5

Pin 28

Pin 50

J3

Pin 1

Pin 1

J6

Pin 1

J8

Pin 1

J7

Pin 1

Function Test Set-Up Meter

Setting

Input to H.V. board At H.V. board Volts J1 pin 1 (Brown wire)

Output to display

board

NOTE: For the following test, place oven in Service Test Mode (see page 11).

Relay Function Test Set-Up Meter

K1 at
230 VAC
line voltage

K2 at
208 VAC
line voltage

Blower motor
Antenna motor
Cavity light

Blower motor
Antenna motor
Cavity light

Disconnect
J5 connector,
blower runs
continuously

Disconnect
J2 connector

Disconnect
J2 connector

Volts J5 pin 28 &

Setting

Ohms J1 pin 1 (Brown wire)

Ohms J1 pin 1 (Brown wire)

Probe Placement Results

& J1 pin 2 (White wire)

J5 pin 50

Probe Placement Results

& J2 pin 4

& J2 pin 3

E7 E6

Line voltage

- 24 VDC

Test mode 5 off − no continuity
Test mode 5 on − < 1 Ω

Test mode 5 off − no continuity
Test mode 5 on − < 1 Ω

J4

January 2012 16500030

©2012 ACP, Inc.

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