Panasonic NC-TXF22 User manual
Order No. PAPTH130602CE
Service Manual
Electric Thermo Pot
NC-TXF22
NC-TXF30
Product Colour
Deep Gray (H)
Pink (P)
Destination
Thailand, Malaysia
© Panasonic Appliances (Thailand) Co., Ltd. 2013.
All rights reserved. Unauthorized copying and
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
M
RA
WPEEK LIOB
- 2 -
CONTENT
NC-TXF22, NC-TXF30
Page
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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
670W
2.2 L
22.2 x 29.4 x 27.4 cm
1.9 Kg
Thailand
220V 50Hz / C2
670W
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
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
M
R
A
W
P
E
E
KL
I
O
B
NC-TXF30
Water supply mark
Approx. 1000 ml.
220 V
KEEP WARM BOIL
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.
A
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
This manual suits for next models
1
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