Panasonic SD-257WST User manual

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ing and distribution is a violation of law.
OrderNo.PTW1003508CE
Automatic Bread Maker
Model No. SD-257WST
Chassis
Product Color White
Destination Australia
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 2
2 Specifications ----------------------------------------------------- 3
3 Location of Controls and Components ------------------- 4
4 Operating Instructions------------------------------------------ 6
5 Test Mode ----------------------------------------------------------13
6 Troubleshooting Guide----------------------------------------15
7 Disassembly and Assembly Instructions ---------------17
8 Wiring Connection Diagram ---------------------------------30
9 Exploded View and Replacement Parts List -----------32

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1 Safety Precautions

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2 Specifications
Power supply 230-240V -50 Hz
Power consumed 505-550 W
Capacity (Strong flour for a loaf) max.550g min.400g
(Strong flour for a dough) max.600g min.250g
(Yeast) max.8g min.0.75g
Capacity of raisin nut dispenser max.150g dried fruit/nuts
Timer Digital timer (up to 13 hours)
Dimensions (H ×W ×D) approx. 37.0cm ×28.0cm ×33.0cm
Weight approx. 6.8kg
Accessories Measuring cup, Measuring spoon

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3 Location of Controls and Components

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4 Operating Instructions

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5 Test Mode
5.1. Key operation and check mode
Before trobleshooting, operate the checkmode in the following procedure.
5.1.1. Check mode
5.1.1.1. Electric power breakdown mode
When an electric power breakdown is detected, all load of the
device goes off in this mode.
Behavior of device after restored from electric power
breakdown mode
• In case of a short breakdown, the device is restored to the
previous condition and continues to cook, but delays cook-
ing time during the breakdown.
• In case of a longer breakdown, the entire mode is canceled
and the device returns to the initial mode after it is restored.
Indication on LCD
• No indication during electric power breakdown
• "POWER ALERT" is displayed during a short breakdown.
• The illustration shows the cooking time as 3 hours remaining
at the "basic BAKE" cooking.

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5.1.1.2. Sensor disconnection mode
When the disconnection of a sensor is detected, all load of the
device goes off in this mode.
Indication on LCD
• "H01" is displayed on the LCD during the sensor disconnec-
tion. ("H01" is brinking)
5.1.1.3. High temperature alarm mode
When the "Start" key is pressed when the unit is in the hot con-
dition at a temperature of more than 40 deg.C, the buzzer
sounds, the LED goes on and off, and the other load goes off in
this mode.
* The high temperature alarm mode does not occur at the
"BAKE ONLY" menu rebaking setting.
Behaviour of restoration from high temperature alarm
mode
• When the unit temperature is less than 40 deg.C, and more
than 10 seconds passes after the high temperature alarm
mode has begun, the buzzer sounds once and the high tem-
perature alarm mode is canceled. (No indication on LCD)
Indication on LCD
• "TEMP" is displayed on LCD. ("TEMP" is brinking)

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6 Troubleshooting Guide
Before troubleshooting, operate the main body test mode in the following procedure in order to check the P.C.Boards.
6.1. Main body test mode
6.1.1. Setting the main body initial test mode
Operation procedure
1. Insert the power cord plug into an electrical outlet.
2. Press the "Select" "Size" and "Timer" keys at the same
time.
Phenomena
• LCD indication: All indications displayed
• Behaviour of device: Load other than LCD is off.
• Restoration: Pressing "Start/Stop" key, the device returns to
the normal initial mode.
* When all indications do not appear on the LCD, check the
device again following the above operations.
Judgement/Remedy
• When all the indications do not appear on the LCD, replace
P.C.Boards A and/or B.
Check the device condition in this test mode after replacing
the P.C.Board (s).
6.1.2. Solenoid/motor operation test (Volume.1) mode
Operation procedure
1. Press the "Crust" key.
Phenomena
• LCD indication: "RAISIN",”BUTTER” displayed
• Behaviour of device: The solenoid runs for 1 second and
stops for 1 second. Then the motor runs and stops in the
manner of 0.5 sec on/1.5 sec off/0.2 sec on/1.8 sec off, and
repeat once in that manner.
• Restoration: Pressing "Stop/Start" key, the device returns to
the main body initial test mode.
Judgement/Remedy
• Replace the solenoid and/or P.C.Board B if the solenoid
does not work.
• Check and remedy the driving parts, i.e., pulley B, belt or
motor, and/or replace P.C. Board B if the motor does not
work.
• Replace P.C. Board A if the device does not work normally
after following the above remedy.

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6.1.3. Solenoid/motor operation test (Volume.2) mode
Operation procedure
1. Press the "Timer" key.
Phenomena
• LCD indication: It light up like the right figure.
• Behaviour of device: The solenoid runs for 1 second and
stops for 1 second. Then the motor runs and stops in the
manner of 0.5 sec on/1.5 sec off/0.2 sec on/1.8 sec off, and
repeat once in that manner.
• Restoration: Pressing "Stop/Start"(F) key, the device returns
to the main body initial test mode.
Judgement/Remedy
• Replace the solenoid and/or P.C.Board B if the solenoid
does not work.
• Check and remedy the driving parts, i.e., pulley B, belt or
motor, and/or replace P.C. Board B if the motor does not
work.
• Replace P.C. Board A if the device does not work normally
after following the above remedy.
6.1.4. Heater operation test mode
Operation procedure
1. Press the "Option" key.
Phenomena
• LCD indication: "TEMP" and "POWER ALERT" displayed
• Behaviour of device: The device supplies electric power to
the heater after 1 second and the power is off when the sen-
sor temperature reaches 165 deg.C.
• Restoration: Pressing "Stop/Start" key, the device returns to
the main body initial test mode.
Judgement/Remedy
• Replace the sensor and/or P.C.Board B if the power is not off
when the sensor temperature reaches 165 deg.C.
• Replace the heater and/or P.C.Board B if the heater does
not work normally.
• Replace P.C.Board A if the device does not work normally
after trying the above remedy.
6.1.5. Sensor inspection mode
Operation procedure
1. Press the "Select" key.
Phenomena
• LCD indication: "BAKE “,”RAPID" displayed
• Behaviour of device: The device supplies electric power to
the heater for 3 seconds at an interval of 32 seconds and
controls the sensor temperature at approx. 35 deg.C.
• Restoration: Pressing "Stop/Start" key, the device returns to
the main body initial test mode.
Judgement
• The P.C.Boards and heater work properly when the temper-
ature inside the unit is controlled at approx. 35 deg.C.

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7 Disassembly and Assembly Instructions
Important:
• Refer to the tips on assembly, and carry out the disassembly
procedure backward to assembly.
• Remove the bread pan assy and kneading blade B unit
before disassembling.
7.1. Dispenser cover assy
1. Remove the dispenser cover from the hinge part.
2. Push the middle lid inside (toward arrow symbol direction
1 or 2), slide the fixing spring out from the hook part, and
remove the middle lid.
3. Remove the rubber seal from the middle lid.
4. If the fixing springs are dislocated, attach them to the dis-
penser cover.
Tips on assembly
• Check the setting direction of the middle lid and force the
middle lid straight into the fixing spring. (With the anti-
reverse set rib, the middle lid cannot be set in the wrong
direction.)

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7.2. Top lid assy
1. Detach the hinge screw.
2. Slide the top lid assy and remove it from its hinge part.

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3. Remove 3 screws from the inner lid.
4. Remove the inner lid with the ( - ) top screw driver
wrenching into the chink between the top lid assy and the
inner lid.
* The inner lid is held with the top lid assy by 8 locks.
5. Remove dispenser B assy.
6. Remove the screw and detach the lid lever B, spring B
and washer A.
7. Remove 4 screws and detach the steam vent and lid
cover.
8. Remove the magnet and magnet plate A.
Tips on assembly
• Refer to the illustration for washer A directions.

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7.3. Control panel unit
1. Remove 2 screws.
2. Unlock the control panel inner lid from the upper frame
lock part while lifting the control panel unit, and while
pushing 2 square holes with ( - ) top screw driver.
3. Remove the control panel unit from the locks on the body
while pulling and pushing the control panel unit in the
direction of the arrow 1 and 2.
4. Disconnect the connector of the solenoid B from the
P.C.Board B.
5. Disconnect the flat cable from P.C.Board B.
Tips on assembly
• Connect the flat cable to P.C.Board B in the direction illus-
trated.