Garland EM-S85 User Manual

SERVICE MANUAL SUPPLEMENT

CAUTION

WARNING TO SERVICE

TECHNICIANS

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING
SERVICING TO AVOID POSSIBLE EXPOSURE TO

EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary:
(1)Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other
damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.
(c) Before turning on microwave power for any service test or inspection within the microwave generating
compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation

and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual

before the oven is released to the owner.
(e)(i) A microwave leakage check to verify compliance with the Federal performance standard should be
performed on each oven prior to release to the owner. (For U.S.A)
(e)(ii) A microwave leakage check to verify compliance with the Canadian Regulation, HEALTH AND WELFARE,

SOR/79-920 should be performed on each oven prior to release to the owner. (For CANADA)

See the Service Manual of EM-C180US(SM-640179)

except the items described in this Service Manual.

PRODUCT CODE NO. 437-453-00

File No:

for Model EM-S85

Microwave Oven

FORM # EM-S85 (02/05)

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-- 1 --

2. SPECIFICATIONS

Rated Power Consumption . . . 1260W.

Microwave Output . . . . . . . . . . 850W.

Frequency . . . . . . . . . . . . . . . . 2,450MHz±50MHz.

Power Supply . . . . . . . . . . . . . 120V, 60Hz.

Rated Current . . . . . . . . . . . . . 11.1 Amp.

Safety Devices . . . . . . . . . . . . Thermal Fuse open

at 167oC for Cavity
Thermal Protector open
at 122oC for Magnetron
Fuse (Cartridge Type 15A)
Primary Interlock Switch
Secondary Interlock Switch

Interlock Monitor Switch.

Timer . . . . . . . . . . . . . . . . . . . 60 min.

Overall Dimensions . . . . . . . . . 525(W) x 427(D) x 283(H)

mm.

Oven Cavity Size . . . . . . . . . . . 350(W) x 371(D) x 208(H)

mm.

Turn Table Diameter . . . . . . . . 340mm.

Effective Capacity of

Oven Cavity . . . . . . . . . . . . . . 25 liters.

Net Weight . . . . . . . . . . . . . . . Approx. 16kg.

3. POWER OUTPUT MEASUREMENT

NOTE

4. PRECAUTIONS AND REPAIR SERVICE TIPS

PRELIMINARY

The power output specification, 850 W on this model is
measured with IEC measurement. The power output is
measured with two (2) liters water is equivalent
to 850 W in measurement with IEC, when measured with
the following power output.

(A)

(B)
(C)

(D)

(E)

(F)

(G)

1.Fill two beakers with one liter of tap water respectively

2.Use accurate thermometer and measure each water
temperature respectively.

Place beakers side by side in the centre of the glass tray.

1.Set the timer at any position more than 2 minutes.

2.Heat the water correctly for 2 minutes.

T ake the beakers out, immediately stir the water and mea­sure the water temperature respectively.

1.Calculate the temperature rise of water in each beaker.

2.Then calculate the average value of two temperature

rises.

3.Output power can be calculated by the equation;

Power Output (W) = 70 x Dt
Where Dt is an average temperature rise in degrees
Centigrade.

Power Output shall be in the following range :

AverageTemperature Rise Power Output

Minimum 9.9

o

C 693W

Maximum 12.7oC 889W
Power Output is affected by the line voltage under load.

For correct Power Output measurement, the line voltage
under load must be 120± 2volts.

A.B.SINCE NEARLY 2,000 VOLTS EXISTS IN SOME

CIRCUITS OF THIS MICROWAVE OVEN, REPAIRS SHOULD
BE CARRIED OUT WITH GREAT CARE.

TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENEGY
LEAKAGE, THE FOLLOWING PRECAUTIONS MUST BE
TAKEN BEFORE SERVICING.

(1)
(a)

(b)

(2)
(a)

(b)

(3)

(a)
(b)
(c)
(d)

(e)

(4)

(a)

(b)

(c)

(d)

(e)

Before the power is applied :
Open and close door several times to make sure the prima-

ry interlock switch, the interlock monitor switch and the door
sensing switch operate properly. (Listen for the clicking
sound from the switches.) Make sure the interlock monitor
switch closes after the primary interlock switch is opens
when the door is opened.
(See pages 1 and 6)

Make sure the perforated screen and the choke dielectric of
the door are correctly mounted.

After the power is applied :
Open and close the door to see if the interlock mechanism

operates properly.
Check microwave energy leakage with a leakage detector

and confirm the energy leakage is below 5 mW/cm

2

.

Do not operate the unit until it is completely repaired, if any
of the following conditions exists:

Door does not close firmly against the cavity front.
The hinge is broken.
The choke dielectric or the door seal is damaged.
The door is bent or warped, or there is any other visible dam-

age to the oven that may cause microwave energy leakage.
NOTE : Always keep the seal clean.

Make sure there are no defective parts in the microwave
generating and transmission assembly. (especially wave­guide).

The following items should be checked after the unit is
repaired :

The interlock monitor switch is connected correctly and firm­ly.

The magnetron gasket on the magnetron is properly posi­tioned.

Waveguide and oven cavity are intact (no leakage of
microwave energy).

The door can be properly closed and the safety switches
work properly.

The oven must be stopped when the door is opened or the
time is up.

The oven must not be operated with any of the

above components removed or bypassed.

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5. CIRCUIT DIAGRAM

-- 3 --

NOTE : All component have special characteristics for safety and must be replaced using parts listed in this manual.

All service on M/W ovens should be performed by a qualified technician using approved testing equipment.
Customers should not attempt replace component marked with a

symbol.

6. TEST PROCEDURES AND TROUBLESHOOTING

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-- 5 --

-- 6 --

-- 7 --

-- 8 --

7. DISASSEMBLY INSTRUCTIONS

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8. EXPLODED VIEW AND PARTS LIST

CAVITY PARTS

Key

Part No. Description Q’ty.

No.

1 617 186 2072 Cabinet 1
2 411 082 5201 SCR TPG TRS 4 x 10 Z1 9
3 411 160 6007 SCR TPG TRS + SRT 4 x 10 Z1 1
4 617 182 7675 Power Cord 1
5 411 160 6106 SCR S-T PAN 4 x 10 Z1 1
6 617 224 3467 Oven Cavity (Not Service Part) 1
7 617 150 2657 Gear Motor 1
8 411 010 5808 SCR EVR PAN4 x 10 Z1 2
9 617 138 5601 Bottom Plate (Not Service Part) 1
10 617 221 6096 Plastic Foot with Canoe Clip 4
11 411 011 0802 Bolt Hex + SW + W 5 x 14 2
12 617 180 6137 Hinge, Lower 1
13 411 089 2500 Washer F5 x 10 x 0.8 1

Key

Part No. Description Q’ty.

No.

14 617 120 8481 Washer 1
15 617 220 5052 Receptacle 1
16 617 199 1048 Rest 1
17 617 215 2714 Turn Table 1
18 617 181 4248 Antenna Complete 1
19 617 162 1938 Protective Cover 1
20 411 069 1707 SCR TPG TRS 4 x 6 DA 1
21 411 006 6604 SCR TPG PAN 3 x 6 Z1 1
22 617 200 0381 Therm al Fuse 167°C 1
23 617 080 5315 Special Washer 1
24 617 224 1081 Protective Cover 1
25 617 224 1098 Protective Cover 1
26 617 225 2377 Cover 1

-- 11 --

NOTE : All component have special characteristics for safety and must be replaced using parts listed in this manual.

All service on M/W ovens should be performed by a qualified technician using approved testing equipment.
Customers should not attempt replace component marked with a

symbol.

SWITCHES AND MICROWAVE PARTS

Key

Part No. Description Q’ty.

No.

1 411 082 5201 SCR TPG TRS 4 x 10 Z1 9
2 617 203 8599 H.V.Transformer, N6T-P300 1
3 617 199 8283 Stay, Cavity & Magnetron 1
4 411 006 6604 SCR TPG PAN3 x 6 Z1 1
5 617 124 1235 Thermostat, Magnetron 122°C 1
6 415 002 6002 Magnetron, 2M218H(N)A 1
7 423 014 2509 Fuse, 250V 15A 1
8 617 177 6157 Power PCB 1
9 617 180 4447 Lead Wire Ass’y, including Diode 1
10 617 162 1990 Space Partition (Blower) 1
11 617 197 6670 H.V.Capacitor including Resistor 1

0.97 uf 2.2KV.
12 617 182 2373 Capacitor Band 1
13 411 011 5609 Bolt Hex 4 x 10 Z1 4
14 617 181 2534 Duct, Mag. Exhaust 1
15 617 206 9180 Lamp, 125V 15W 1
16 617 124 1280 Lamp Socket 1
17 617 197 7417 Blower Motor 1

Key

Part No. Description Q’ty.

No.

18 411 082 5201 SCR TPG TRS 4 x 10 Z1 2
19 617 196 8507 Blower Fan 1
20 617 124 1181 Latch Lever 1
21 617 152 4741 Micro Switch, Primary Interlock 1

V-5930D

22 617 004 5575 Micro Switch, Interlock Monitor 1

V-5220DZ

23 617 152 4741 Micro Switch, Door Sensing 1

V-5930D

24 617 124 1198 Latch Lever 1
25 617 124 1174 Lever Stopper 1
26 411 102 5907 SCR ETG TRS 4 x 10 N2 2
27
28
29 617 124 3796 Lead Wire Assy 1
30 411 160 6106 SCR S-T TRS + SRT 4 x 10 Z1 1
31 411 007 5903 SCR TPG BIN 4 x 10 Z1 1
32 617 208 7689 Clip 2

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NOTE : All component have special characteristics for safety and must be replaced using parts listed in this manual.

All service on M/W ovens should be performed by a qualified technician using approved testing equipment.
Customers should not attempt replace component marked with a

symbol.

DOOR PARTS

Key

Part No. Description Q’ty.

No.

1 617 208 7504 Door Cover 1
2 411 178 9908 SCR S-T PG FLT 4 x 8 ZK 2
3 617 222 1175 Door Panel 1
4 617 208 7481 Door Main Frame (Also order 1

Door Sheet when replacing
Door Main Frame)

5 411 054 1903 Nut Hex + Flg W/SRT 5 2

Key

Part No. Description Q’ty.

No.

6 617 180 6151 Hinge, Upper 1
7 411 011 0802 Bolt Hex + SW + W 5 x 14 2

8 617 124 0948 Choke Dielectric 1
9 617 124 0931 Door Sheet 1

10 617 101 1494 Spring 1
11 617 179 2478 Door Latch 1

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NOTE : All component have special characteristics for safety and must be replaced using parts listed in this manual.

All service on M/W ovens should be performed by a qualified technician using approved testing equipment.
Customers should not attempt replace component marked with a

symbol.

CONTROL PANEL PARTS

Key

Part No. Description Q’ty.

No.

1 617 143 9632 Knob Assy 1
2 617 143 9656 Knob Assy 1
3 617 209 0573 Control Plate 1
4 617 208 7634 Control Frame 1
5 617 209 0610 Control Base Assy 1

Key

Part No. Description Q’ty.

No.

6 411 160 6205 SCR TPG TRS + SRT 4 x 10 Z1 1

7 617 209 0566 Timer Switch 1
8 411 006 2804 SCR TPG BIN 4 x 10 Z1 4
9 617 080 9559 Spring, Door Release Lever 2
10 617 124 1143 Door Release Lever 1

Key

Part No. Description Q’ty.

No.

617 209 0542 Operating Instructions 1
617 209 0498 Carton Box Complete 1
617 209 0436 Name Plate 1

PRINTED MATTER (Items Not Illustrated)

NOTE : All component have special characteristics for safety and must be replaced using parts listed in this manual.

All service on M/W ovens should be performed by a qualified technician using approved testing equipment.
Customers should not attempt replace component marked with a

symbol.