SONY 151L Service Manual

Technical Information – Stacked Washer/Dryer

MLE19PNAY*, MLG19PNAW*

• Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or

repair of this unit.

• Refer to Service Manual 16009423 for detailed installation, operating, testing, troubleshooting, and disassembly

instructions.

CAUTION

All safety information must be followed as provided in Service Manual 16009423.

To avoid risk of electrical shock, personal injury or death; disconnect power to washer/dryer before servicing, unless testing requires power.

Models

WASHER:

Power Source

Voltage AC 120 VAC Fuse Requirement 15 Amp

Spin Speed Capacity

DRYER:

Power Source

Voltage AC Gas - 120 VAC, Electric - 220 VAC Fuse Requirement Gas - 15 Amp, Electric – 30 Amp

Motor Airflow Exhaust Gas Rating (MLG Model) Electrical Rating (MLE Rating) Capacity Cabinet Dimensions

Height Overall 71.5” (112.1 cm) Width 27-3/16” (69.1 cm) Depth 27-1/2” (69.9 cm)

Weight

Crated (lbs/kg) 335-lbs (152-kg) Uncrated (lbs/kg) 303-lbs (137-kg)

Makeup Air Static Pressure

WARNING

MLE19PNAY*, MLG19PNAW*

800 r.p.m. (200 g’s)

2.9 cubic feet (0.08 cu.m).

¼ HP 120 Volt 220 cubic feet (60.2 cu.m.) per minute 4” (10.2 cm) diameter rigid aluminum duct 24,000 BTU/hr. for the drying chamber 5900 watts (6300 watts including washer)

6.0 Cubic Feet

Requires 36 sq.inch Should not exceed .92” or less than 0 water column inches

January 2004 16022935 Rev 0

Component Testing Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power to washer/dryer before servicing, unless testing requires power.

WARNING

Diagnostic Mode:

This mode is entered by depressing the WASHER KNITS & DELICATES for 1 second while in any of the set-up codes one through six, anytime a diagnostic code is present, or while dAS displays if operating with Maytag Data Acquisition setup.

On entry to diagnostic mode the entire display will flash, a cycle in process is cancelled, money in escrow is cleared, and diagnostic codes are cleared. If a diagnostic code persists, it must be corrected before the following cycle options are permitted.

Procedures to initiate cycle activity from diagnostic mode are as follows:

1. Washer Field Diagnostic Cycle - With the entire display flashing, the cycle is started by depressing the WOOLENS key pad. This cycle provides a quick verification that the cold and hot water valves, dispenser valves, pump, motor, and door lock are working. It is also a method to quickly get into a drain and spin to remove water from the machine if desired. Pressing the WASHER KNITS & DELICATES key pad will cancel this cycle and exit the diagnostic mode.

2. Washer Cycle Credit - With the entire display flashing, a cycle may be credited by pressing the WASHER PERMANENT PRESS keypad (CC will display). When the service mode is exited “SELECT CYCLE” will be displayed unless the end-of-cycle door opening is required.

3. Washer Operational Diagnostic Cycle - With the entire display flashing, this cycle is started by pressing the WASHER WHITES keypad. This cycle provides more typical full length fills, tumbles, and drains allowing for a more thorough analysis of machine operation including pressure switch behavior.

4. Dryer Field Diagnostic Cycle - With the entire display flashing, this cycle is started by pressing the DRYER PERMANENT PRESS keypad. The cycle consists of seven minutes of heat and one minute of cool down. The DRYER WHITES & COLORS keypad will increment the diagnostic cycle minutes up to 99, then roll over to 2 minutes. Pressing the WASHER KNITS & DELICATES keypad will cancel this cycle and exit the diagnostic mode.

Diagnostic Codes:

If the set-up mode is entered and one of the following has occurred, the appropriate diagnostic code will be display.

d1 - Dryer door sense error on control board or due to power line interference. d2 - Washer door sense error on control board or due to power line interference. d4 - Dryer motor control circuit error. d5 - Blocked coin 1 or coin drop control circuit failure. d7 - Slow fill detected during previous cycle. d8 - Last drain was slow. d9 - Voltage detected below 90vac for 8 seconds. d10 - Washer door lock sense error or due to power line interference. d11 - Washer motor speed error detected. d12 - Dryer motor sense error on control board or due to power line interference. d13 - Blocked coin 2 or coin drop control circuit failure. d16 - Not receiving communications from installed debit card reader in Enhanced (Generation 2) Debit mode.

16022935 Rev 0 January 2004

Component Testing Procedures

-7--6--5--4--3--2--1-

GREENGRAYGRAYBLACKWHITEBROW

MOTOR CONNECTOR

To avoid risk of electrical shock, personal injury or death; disconnect power to washer/dryer before servicing, unless testing requires power.

WARNING

Washer Motor Phases

With the introduction of the sensorless motor, the motor phase test is no longer required. If the motor Experiences a phase problem, the motor will not run.

Washer Motor & Washer Motor Control Test

1. Disconnect power to the washer.

2. Remove the front panel and pull the JP4 Connector from the motor control board.

3. Supply power to the motor controller with an external power cord.

4. The motor control will immediately execute a routine and the motor should run, rotating the spinner at 50 rpm.

5. If the motor runs and the spinner rotate at the proper RPM speed: the problem lies outside of the motor and motor control circuit. Disconnect power to the washer and reconnect the JP4 Interface connector to the motor control. If the motor runs and the spinner does not rotate: check for missing belt.

6. If the motor does not run:

A. The terminals in the 6-position connector on the Motor should be the same height. Remove the connector

and replace the motor if any of the connectors are pushed into the motor.

B. If no damage is present, check motor windings for any open circuits. Replace motor if necessary. C. Check the 10-amp fuse located on the control board, either visually or with an ohmmeter. If bad, replace

motor control/wire harness assembly completely.

D. If the fuse is functioning, check the six semiconductors on the heat sink visually for any damage. If

damaged, replace motor control/wire harness assembly completely.

7. Unplug the washer power cord and replace motor control board connector JP4 when finished.

January 2004 16022935 Rev 0

155-195 OHMS

6-7.5 OHMS

Wiring Diagram

-8.5 VDC

PRESSURE SWITCH

DRAIN PUMP

WHWHWHWHWHPKPUBUOR

BLEACH

FAB. SOFTNER

BKBRWHYLFULL

FULL

DOOR LOCK

WAX MOTOR

PRESSURE

34-NO

14-NO

32-NC

31-COM

11-COM

RINSE LEVEL

66121215

111114

101013

CAPACITOR

GND

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to washer/dryer before servicing, unless testing requires power.

MLG19PNAW* SCHEMATIC (Lower Washer)

LOWER WASHER

ELECTRICAL SCHEMATIC

MOTOR CONTROL

MN4

MOTOR

6 35 24 1

COMCOM COM

NCNC NC

COM

DISPLACEMENT

JP4

UPPER TUB

DISPLACE-

MENT

SWITCH

LOWER TUB

DISPLACE-

MENT

SWITCH

INERTIAL

UNBALANCE

SWITCH

STRUT

SWITCH

GND

WH42

YL29 RD30 BU47

DOOR LOCK

DOOR SWITCH

SWITCH

COMNONO

COM

63719

MOTOR CONTROL PWM

MOTOR CONTROL TACH.

SWITCH

WASH LEVEL

WATER

12-NC

VALVE

COLD

HOT

GROUND

PRESSURE SWITCH

-20.7 VDC

STRUT DISPL. SWITCH

DOOR LOCK SWITCH

FAB. SOFTENER

HOT WATER VALVE

GROUND

COLD WATER VALVE

BLEACH

PUMP

DOOR LOCK WAX MOT

DOOR SWITCH MOT CNTRL L1

LOWER INTER-

CONNECT

CAP (RH)

LOWER

INTER-

CONNECT

CAP (LH)

16022935 Rev 0 January 2004

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