Panasonic SR-TMG10, SR-TMG18 Service Manual

Order No. PHAT061123C3

(REVISION : AUG. 2011)

Service Manual

Electronic Warm Jar

SR-TMG10
SR-TMG18

Destination

Hong Kong

© Panasonic Home Appliances (Thailand) Co., Ltd. 2006.
All rights reserved. Unauthorized copying and distribution
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

3
4

5 - 7

8
8
9

9
10
11
12
12

13
14

15 - 17

18

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 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

No

Is the thermal fuse conductive?

Yes

No

Is the therminal conductive?

Yes

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

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

Improper operation

No

Yes

No

Yes

Yes

Yes

No

Is the cast heater conductive?

Yes

No

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

(Check with the bubbling test).

Does the center thermostat operate
properly?

Yes

No

(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

No

Yes

Yes

Does the center thermostat operate
properly?

Yes

No

(Check with the evaporation test).