Sharp 37AM23H, 37AM12H, 37AT25H, 51AT15H Service Manual

CTV970208

Month of Issue:

Classification: White

TELEVISION TECHNICAL BULLETIN

Page 1 of 1

MODELS 37AM23H 37AM12H 37AT25H 51AT15H

SYMPTOM

CAUSE
ACTION

Unit stuck in the child lock mode.

Incorrect PIN number or data corruption.
To reset the child lock mode, follow the procedure given below.

1. Switch the television on ( Mains switch ).

2. Press the volume down button on the television and the child lock button on the
remote control simultaneously.

3. Press the mode button on the remote control.

4. Using the channel up and down buttons, move to the child lock position.

5. Press the mode button again.

6. Select a new PIN ( Do not forget it ).

7. Select exit and press mode again.

Note that this procedure is shown in the service manual.

Alternativly the NVM can be reprogrammed by changing the following locations.
Location Purpose Default
C5 Password on/off 00

C6 First Digit of PIN number 05
C7 Second Digit of PIN number 05
C8 Third Digit of PIN number 05
C9 Forth Digit of PIN number 05

To turn off the child lock function change location 0B to 98 and back on again to B8.

Originator AvW Supervisor Approval Date / / Reference PJCHDLCK MK2

White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units

Sharp Electronics (UK) Limited

Revision