HP - L1735A _ L1736A_L1737A_L1798A _ MDTV Rear Projection TV _ Service Help

TO ENTER SERVICE MODE [FACTORY MODE]

{ Press "Source", "--", "CC", "SAP"} keys on the remote control in sequence to enter Service Mode [Factory Mode].

ADC CALIBRATION

• Input "SMPTE" test pattern from generator to  TV component Port. {Component-1 of 2 is OK}
• Set TV to Factory Mode.  Use Cursor on the remote control to move to "ADC Calibration" setting.
• Press "OK" on the remote control.

ADC - VGA CALIBRATION 

1. Input 16 Gray Scale pattern from the pattern generator to TV VGA Port.
2. Set the TV to Factory Mode.  Use cursor on the remote to move to "ADC Calibration" setting.
3. Press 'OK' button on the remote control.

OPTICAL ALIGNMENT

1. Plug the power cord into the socket behind TV.
2. Switch ON power and press keypad Power Button to ignite lamp.  Check if the Lamp is ON.
3. Enter 'Factory Mode'.
4. Press 'OK' to enter 'Optical Alignment' color bar image.  Slope / Shape / Trapezoid  to go to the permit area.  {Default value:  md5020/5820: left, right 25 Up, bottom: 16 md5880/6580: left, right: 37  up,bottom: 20}
5. Move and rotate engine module, adjust the center line to frame.
6. If the image is too high, adjust front I type screw clockwise rotation, the the screen will be moved to the lower side.  If the picture is too low, adjust I type screw to counter clockwise the unit in order to move the picture higher.
7. Use ratch wrench locking front two fixed studs.
8. Revolve the TV, use ratch wrench  locking back  tow fixed studs.  Attention:  When locking , can't damage the wire.
9. Revolve TV again , use glue machine to drop location to two I type screw.