Panasonic SR-TMG10 Manual de usuario

Order No. PHAT061123C3

(REVISION : AUG. 2011)

Service Manual

Electronic Warm Jar

SR-TMG10

SR-TMG18

Destination

Hong Kong

is a violation of law.

There are special components used in this equipment which are important for safety. These parts are marked by

in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that

these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do

not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

Congee

Off

(3 hours)

SR-TMA18N

(1 hour)

The service information is designed for experienced repair technicians only and is not designed for use by the general

public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting

to service a product. Products powered by electricity should be serviced or repaired only by experienced professional

technicians. Any attempt to service or repair the product or products dealt within this service information by anyone

else could result in serious injury or death.

WARNING

- 2 -

CONTENT

Page

5 - 7

15 - 17

1. Specification

2. Wiring Diagram

3. Troubleshooting Guide

4. Testing Procedure

4.1 Bubbling Test

4.2 Evaporation Test

4.3 Heat reserving Test

4.4 Hinge cover removal (Hinge Cover)

4.5 Inner enclosure and upper frame removal

4.6 Disassembly a control unit

4.7 Disassembly cast heater and thermostat case ass’y

4.8 Disassembly a side heater

5. Parts Exploded View and Replacement Parts List

5.1 Parts Exploded View : Body

5.2 Parts Exploded View : Packing

5.3 Replacement Parts List : SR-TMG10 / SR-TMG18

6. Detail Change Notice

SR-TMG10 / TMG18

- 3 -

1. SPECIFICATION

MODEL

Power Source

Power Consumption Cooking

Warming

Plane Rice

Brown Rice

Mixed Rice

Sticky Rice

Porridge

Congee

Cake

Cooking Capacity

220V 50Hz

SR-TMG10

470W 650W

65W

0.18 ~ 1.0 L (1 cup ~ 5.6 cups)

0.18 ~ 1.0 L (1 cup ~ 3 cups)

0.18 ~ 1.0 L (1 cup ~ 4 cups)

0.18 ~ 1.0 L (1 cup ~ 3 cups)

Max 1.0 L (Rice 1/2 ~ 1 cup)

76W

0.54 ~ 1.8 L (3 cups ~ 10 cups )

Warming Capacity (Plane Rice) 0.18 ~ 1.0 L (1 cup ~ 5.6 cups) 0.54 ~ 1.8 L (3 cups ~ 10 cups )

248 x 247 x 255 (mm) 276 x 274 x 277 (mm)

2.5 Kgs. 3.1 Kgs.

Cooked rice warming Temperature

Temperature Detector

Thermal fuse Specification

Dimension (Width x Depth x Height)

Weight

Keep Warm

Power Cord (Approx.)

Accessories

* Specification subject to change without notice.

71°C ~ 79°C

Sensor thermistor

172°C 250V 10A

12 Hours

1.2 m.

Measuring cup, Scoop, Steaming basket

0.54 ~ 1.8 L (3 cups ~ 7 cups )

0.54 ~ 1.8 L (3 cups ~ 8 cups )

0.54 ~ 1.8 L (3 cups ~ 6 cups )

Max 1.8 L (Rice 1 ~ 2 cups )

Max 1.0 L Max 1.8 L

500 g. 650 g.

SR-TMG18

SR-TMG10 / TMG18

- 4 -

2. WIRING DIAGRAM

SR-TMG10 / TMG18

PCB lead wire C (Red)

Thermal fuse lead wire A (Black)

Should be above thermal fuse

lead wire A and then goes

below terminal of side

heater lead wire D

Thermistor lead

wire (Red)

Sems screw lor

laternal wising

Thermostat earth lead wire (Green)

Therminal fuse lead wire B (Orange)

Side heater lead wire A (Blue)

PCB lead wire B (Black)

Side heater lead wire C (Black)

Side heater lead wire B (Blue)

Terminal shall not be higher than head of sems screw

Side heater lead

wire D (Red)

PCB lead wire A (White)

Body earth lead wire (Green)

Tapping screw for body earth lead wire

Hinge earth lead wire (Green)

- 5 -

3. TROUBLESHOOTING GUIDE

Table 1

When receiving a rice boiler to be repaired, be sure to check that the main body is completely provide with the inner pan

and the inner lid, ask the condition (phenmenon) of the trouble in detail. Before troubleshooting single parts, be sure to

disconnect the power supply plug from the receptacle.

Condition

Rice boiling section

Plane rice / Brown rice

• Rice is not boiling.

(The indicating lamp

does not come on)

• Rice is not boiling.

(The indicating lamp

is lit)

Troubleshooting Remedy

Is the power cord conductive? • Replace the cord.

• Make sure insert therminal is

fasten.

• Replace the P.C.B. complete.

• Replace the cast heater.

• Replace the center thermostat.

• Replace the inner pan or the

cast heater.

• Seeing at Table 2

• Explain the proper operation.

• Isolate the cause which melt

the thermal fuse, correct

the cause and

• Earlier cut off.

• Poor boiling up.

• Too hard

• Too soft

• Insufficient boiling

SR-TMG10 / TMG18

• Immediately after the switch is turned

off, open the cap.

• Rice is excessive or insufficient.

• Rice has not been scooped and mixed

well.

• Water is excessive or insufficient.

• The switch is turned off once during

boiling.

Is the pan bottom properly contacted with

the cast heater?

Yes

Is the thermal fuse conductive?

Yes

Is the therminal conductive?

Yes

Are the parts on the P.C.B. mistake?

Improper operation

Yes

Is the cast heater conductive?

Yes

Are the parts on the P.C.B. mistake?

(Check with the bubbling test).

Does the center thermostat operate

properly?

Yes

(Check with the operation test).

Yes

- 6 -

SR-TMG10 / TMG18

Condition Troubleshooting Remedy

• Replace the center thermostat.

• Seeing at Table 2.

• Explain the proper operation.

• Excessive burning.

(More than light brown)

• The voltage is lower than specified.

• Rice is not washed sufficiently

• Water is excessive.

(Bran remains still)

• The pan bottom is conditioned to

generate burning easily.

Are the parts on the P.C.B. mistake?

Improper operation

Yes

Does the center thermostat operate

properly?

Yes

(Check with the evaporation test).

- 7 -

Table 2

Condition

• Rice is not boiling.

(The indicating lamp

does not come on)

• Rice is not boiling.

• The thermal fuse is

blown off.

• Earlier cut off.

• Poor boiling up.

• Excessive burning.

(The indicating lamp

is lit)

• Heat is not reserved.

(The indicating lamp

does not come on)

• Heat is not reserved.

(The indicating lamp

is lit)

Troubleshooting Remedy

Is the transformer operating?

• Replace the P.C.B. complete.

• Replace the transformer.

• Replace the relay.

• Replace the transformer.

• Replace the relay.

SR-TMG10 / TMG18

Is the relay operation? No

Is the relay cut off?

Is the relay operation?

Yes

• Replace the P.C.B. complete.

Yes

• Replace the P.C.B. complete.

Yes

• Replace the P.C.B. complete.

Yes

• Replace the P.C.B. complete.

Yes

• Replace the P.C.B. complete.

Yes

Is the relay operation? No

Is the transformer operating? No

• Replace the transformer.

• Replace the P.C.B. complete.

Yes

Is the trial operating? No

- 8 -

4. TESTING PROCEDURE

4.1 Bubbling test

Input the pan in the main body, lightly rotate the pan clockwise and counter clockwise to settle the pan on the

heating plate properly.

1. Fill water until center area of the pan bottom is dipped and close the lid. Then turn on the boiling switch.

4.2 Evaporation test

1. Check that bubbling is proper, open the lid and place a weight.

2. Fully cover 2 to 3 sheet of tissue paper (gauze is also applicable) on the pan bottom and continuously

flow electric current.

Note : To prevent plastic parts from deformation caused by steam, be sure to open the lid fully.

Note : To prevent tissue paper from floating because of bubbling, previously hole the paper.

3. Water on the pan bottom is completely evaporated to be empty. This timing is an follows :

Within 1 minute before the boiling switch is turned off.

Within 1 minute after the boiling switch is turned off.

Place a weight so that its gravity center may be aligned at the center

2. When it beings boiling to produce steam. Remove the lid immediately check the bubbling condition on

the pan bottom.

3. As show in the figture.

If it is improper, it may result from the insufficient contact between the pan bottom and heating plate.

Check the pan bottom and the heating plate for foreign material remainder. Clean off the foreign materials

or replace the parts.

Bubbles generate through out the circumference of the pan bottom...............................................Proper

Bubbles does not generate on more than one quater part of the pan bottom circumference..........Improper

SR-TMG10 / TMG18

Bubbling

5 cm

40 cm

- 9 -

SR-TMG10 / TMG18

4.3 Heat reserving test

The above conditions are proper.

1. Put approx. 1 liter of water and the thermometer [ repairing tool (mercury thermometer ASN-150H) ]

in the pan, close the lid and turn on the boiling switch.

4.4 Hinge cover removal (Hinge cover)

1. Remove the dew collector.

2. Remove the hinge cover mounting screws.

3. As show in the figure, insert a narrow flat head screwdriver from just below and pry off the hinge cover.

2. When the beings boiling to generate steam turn off the boiling switch.

Within 69°C - 77°C .....................................Proper

If outside 69°C - 77°C, check triac mounting for irregularity, if it is proper, replace warming heater.

3. Add water or keep the lid opened until the reading of the thermometer falls to approx. 70°C.

4. When it becomes approx. 70°C, close the lid. After the warming heater is activated for 1 hour or more,

check the heat reserving temperature.

Top view of pan

Holes on the

tissue paper

Pan flange

Tissue paper

Mercury thermometer

Urethane foam blocks

Mercury thermometer

Inner Pan

- 10 -

SR-TMG10 / TMG18

4.5 Inner enclosure and upper frame removal

1. As show in the figure, pry up three fastening hooks. Fixing the upper frame, turn the inner enclosure in

the arrow direction.

2. The upper frame will be seperated from the inner enclosure and the upper frame.

Note : When assembling, refer to the illustration without the position relationship between the inner

enclosure and the upper frame.

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