Panasonic NC-TXF22 Manuale utente

Order No. PAPTH130602CE

Service Manual

Electric Thermo Pot

NC-TXF22

NC-TXF30

Product Colour

Deep Gray (H)

Pink (P)

Destination

Thailand, Malaysia

distribution is a violation of law.

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

WPEEK LIOB

- 2 -

CONTENT

NC-TXF22, NC-TXF30

Page

23 ~ 25

1. Cautions for safe repair work

2. Specification

3. Problem checking

3.1 Thermo pot performance test mode

3.2 Dismantle procedure for failure diagnotics

3.3 Check points

3.4 Failure diagnostics chart

4. Disassembly and Reassembly instructions

4.1 Bottom plate and Body

4.2 Feed water pipe

4.3 Thermal fuse comp. and Thermistor comp.

4.4 Case A comp.

4.5 Lamp assy unit

4.6 How to remove Decoration panel (Display part)

4.7 Peg frame

4.8 Guage cover

4.9 Lid comp. and Inner lid

4.10 Lid packing and Steam way A

4.11 Lid and Pump comp.

4.12 Valve A, Spring B and Seal ring

4.13 Shaft

4.14 Lock knob A, Lock spring A and Lock spring B

4.15 Supporting plate

4.16 Stopper comp.

4.17 Lock lever A (Assemble - Remove knob)

4.18 Upper frame

4.19 Thermal fuse comp. assembly

4.20 Thermostat assembly

4.21 How to paste Decoration panel

4.22 Shaft assembly

4.23 Valve A, Seal ring and Spring B assembly

4.24 How to check Pump comp.

4.25 Recheck

5. Production No. position

6. Body efficiency check

7. Parts Exploded View and Replacement Parts List

7.1 Parts Exploded View : Body

7.2 Parts Exploded View : Packing

7.3 Replacement Parts List

- 3 -

1. CAUTIONS FOR SAFE REPAIR WORK

To prevent accidents during repair work, injury or property loss to the users, safety instructions are described

below.

WARNING

CAUTION

This indicates “ the possibility of death or serious injury ”

This symbol indicates caution to be careful.

This symbol indicates compulsory action that must be followed.

This indicates “ the possibility of injury or property loss ”

(Below symbols are examples)

1.1 Degree of loss or potential for injury is classified as follows.

1.2 Safety instructions are classified with symbols as below and

explanations are described as follows.

After the repair, replace the original wiring layout.

Otherwise the lead wires may contact any rotating parts or adjacent components causing

failure, electric shock or fire.

Make sure to use specified parts.

Make sure to use specified parts if indicated with the symbol in circuit diagram or parts list.

Be careful to avoid electric shock.

Caution

for electric

shock

Disconnect

power plug

During repair service with power on,

such as for voltage measurement, be

careful to avoid electric shock around

charged battery portion or lead wire

terminals.

WARNING

Disconnect power plug while repairing.

Disassembling, assemble and replace

parts after disconnecting the power

source. Failure may cause electric

shock or injury.

Wear gloves while disassembling, replacing or assembling.

Make sure to wear gloves while power is on to avoid injury from sharp metal edges or electric

shock during service work.

CAUTION

NC-TXF22, NC-TXF30

- 4 -

2. SPECIFICATION

MODEL NC-TXF22 NC-TXF30

Thailand

220V 50Hz / C2

670W

2.2 L

22.2 x 29.4 x 27.4 cm

1.9 Kg

Thailand

220V 50Hz / C2

670W

3.0 L

22.2 x 29.4 x 31.1 cm

2.0 Kg

Thermostat

360˚ Rotatable with the power cord

157˚C (2 Thermal fuses)

Approx. 1 M

Malaysia

240V 50Hz / S3

635W

3.0 L

22.2 x 29.4 x 31.1 cm

2.0 Kg

Destination

Power Supply

Power Consumption

(approx.)

Capacity (approx.)

Dimensions (approx.) [ W x D x H ]

Weight (approx.)

Thermal Regulation

Rotating Base

Thermal Fuse

Power cord

Air pumpHot water supply method

170 ml / 5 secCurrent volume adjustment range

Push supporting plateOperation Method

Push stopperPump-Lock

Additional functions : Overheating protection, Air pump, Lock knob (Air pump type).

Hot water supply device specifications

Rated

Boiling

NC-TXF22, NC-TXF30

- 5 -

3. PROBLEM CHECKING

3.1 Thermo pot performance test

mode

Please follow check operating detail below, before

start to check the problems.

LED symbol for this instruction show as below.

How to operate

1. Pour approx. 1000 ml water into the container.

2. Supply with 220V/240V electric power.

Instruction

1. Long Boil/Reboil LED will be lighted and LED

will be blink and start to boil water.

2. After 9~10 min., LED will be lighted and

change to keep warm state.

Boiling and Keep warm test

Blink

Lighted

NC-TXF22, NC-TXF30

NC-TXF30

Water supply mark

Approx. 1000 ml.

220 V

KEEP WARM BOIL

- 6 -

NC-TXF22, NC-TXF30

1. Remove 2 tapping screws and 1 truss head

screw from bottom plate.

2. Remove 1 screw and sleeve from body.

3. Remove white, orange lead wire and earth wire

from peg frame.

4. Remove body off.

5. Remove water proof cover B.

3.2 Dismantle procedure for failure

diagnotics

3.3 Check points

Do not do maintennance and re-use if copper

pattern on PCB is broken.

Thermo pot may break down by static

electricity from clothes, human body,

workbenches, etc., when touch or

wonder to touch should to ground

human body with several MΩ.

Note

CAUTION

Tapping screw

(M4 x 12)

Truss head screw

Bottom plate

Sleeve

Screw A

Body

Insert the direction to Pin Base where Faston Terminal

is inserted so that the curl part may become direction

of this ﬁgure. (2 positions)

Discharge gap / Malaysia model

# Tighten the screw securely and completely, allowing no

gap between the screw head and the counterpart.

# The additional-tightening torque shall be 70~120N • cm

(7.1~12.2kgf • cm).

# Tighten the screw securely and completely,

allowing no gap between the screw head and

the counterpart.

# The additional-tightening torque shall be

80~200N • cm (8.2~20.4kgf • cm).

# Tighten the screw securely and

completely, allowing no gap between

the screw head and the counterpart.

# The additional-tightening torque shall be

50~100N • cm (5.1~10.2kgf • cm).

Pan Head Tapping Screw

Deltite Screw

Faston Terminal shall be securely inserted to the end.

Earth Wire Assy

Wire Q

Funen Ban

Wire B

View B

Wire A

Funen Tube

Wire S

Wire L

Wire P

Wire J

Wire I

Lead Wire Ban

# Insert the Lead Wire Ban for hold the Lead Wire Assy J, K and P.

# Lead Wire Ban shall be twisted 2 round or more before and after

insert Lead Wire Assy J, K and P.

# Insert the direclion to Terminal Plate where Funen Ban and

Funen Tube is inserted so that the curl part may become

direction of this figure.(2 positions)

Lead Wire Assy J, K, P

# Do not contact on sharp points of

Container when apply force 200N.

Deltite Screw x2

Wire K

Wire G

Wire F

- 7 -

NC-TXF22, NC-TXF30

3.4 Failure diagnostics chart

3.4.1 No power. (There is no power indication)

When the above parts are normal

When the above parts are normal Replace the Control unit A (bottom).

Replace the Control unit B (operation).

Replace the Power cord.Is there connection in the power cord? (0Ω)Power cord

Replace the Thermal fuse comp.Is there connection across the blue lead wire on the

peg frame?

Thermal fuse comp.

ActionDiagnostics MethodCheck

The items in the Check correspond to those shown in Check Point on P. 6.

3.4.2 Water is not boiling. (Water pour out)

Replace the Container comp.Is there connection across the boiling heater?

(approx. 70Ω) (between the brown and the red

portions)

Boiling heater

Replace the Control unit A (bottom).When the above parts are normal

ActionDiagnostics MethodCheck

The items in the Check correspond to those shown in Check Point on P. 6.

4. DISASSEMBLY AND REASSEMBLY INSTRUCTIONS

4.1 Bottom plate and Body

1. Remove 2 tapping screws and 1 truss screw

from bottom plate.

2. Remove 1 screw and sleeve from body.

3. Remove black, white lead wire and earth

wire from peg frame.

4. Remove body off.

FIG. 1

Tapping screw

(M4 x 12)

Truss head screw

Bottom plate

Sleeve

Screw A

Body

- 8 -

NC-TXF22, NC-TXF30

4.2 Feed water pipe

FIG. 2

1. Remove 1 screw off.

2. Remove bushing from water pipe packing A

and container comp.

3. Remove feed water pipe from communicating

bushing.

Tapping scraw

(M4 x 8)

Feed water pipe

Communicating

bushing

Water pipe

packing A

Water pipe

comp.

Container

comp.

1. Remove 2 screws of cover plate.

2. Remove blue and red lead wire of heater

terminal.

3. Remove cover plate from container.

4. Remove thermal fuse comp. from cover

plate.

5. Remove hold spring A from cover plate.

6. Rotate thermistor 90°to remove it.

4.3 Thermal fuse comp. and

Thermistor comp.

FIG. 3

Operating point

Careful thermistor leans when assemble with

cover plate.

Do not forget to put compound.

Remove white, blue and red lead wires with

wrench.

Tapping screw (M4 x 8)

Thermal fuse

comp.

Container comp.

Thermostat

Hold spring A

Cover plate

Heater

terminal

- 9 -

1. Remove water pipe comp., and then remove

case A comp.

2. Pull off ball A from case A comp.

4.4 Case A comp.

FIG. 4

NC-TXF22, NC-TXF30

4.5 Lamp assy unit

1. Remove 2 screws off.

2. Remove board holder B off. (Pull upside)

3. Remove LED holder off.

4. Lean board holder B claw and pull lamp

assy unit to remove.

FIG. 5

Operating point

When remove lamp assy unit, please do in 1

set in order to not forget seal packing F.

Board holder B

Claw

Water pipe

comp.

Case A

comp.

Ball A

Tapping screw

(M3.5 x 12)

(2 pcs)

Board holder B

LED holder

- 10 -

NC-TXF22, NC-TXF30

4.6 How to remove Decoration

panel (Display part)

FIG. 6

Open (A point) with minus screwdriver of small

pin.

FIG. 7

4.7 Peg frame

1. Remove body follow the instruction.

2. Remove bottom ring upside with minus

screwdriver or etc.

3. Remove 1 screw off.

4. Use minus screwdriver to pry between 2 ribs

of peg frame and body, and then push out

peg frame with thumb, then pull it off.

FIG. 9

Bottom ring

Peg frame

Tapping screw

(M4 x 12)

Minus

screwdriver

KEEP WARM BOIL

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