Master Electronics Repair !: EMERSON CR202EM8 - HOW TO ENTER SERVICE MODE

EMERSON CR202EM8 - HOW TO ENTER SERVICE MODE - SCHEMATIC DIAGRAM

How to enter Service Mode_Initialize (Factory Reset)_Preparing a service remote control. EMERSON CR202EM8 - CRT TV

SERVICE MODE

1. Use the service remote control unit.
2. Turn the power on. (Use main power on the TV unit.)
3. Press [SLEEP] button on the service remote control unit. Version of micro computer will display on the CRT. (Ex: 058-0.06)
4. Check the display on the lower left is “3641” and if it is not “3641,” set it at “3641” according to "Initial Setting".

HOW TO MAKE SERVICE REMOTE CONTROL

To prepare normal remote control unit. (Part No. NE601UE).

* Remove 3 Screws from the back lid.

* Add J1 (Jumper Wire) to the remote control CBA.

HOW TO INITIALIZE

To put the program back at the factory-default, initialize the television as the following procedure.
1. Use the service remote control unit.
2. Turn the power on. (Use main power on the TV unit.)
3. Press [SLEEP] button on the service remote control unit to enter the Service mode.

4. Press [VOL n] button on the service remote control unit twice, and confirm that OSD indication is “7F = FF.” If needed, set it to become “7F = FF” by pressing [CH o / p] buttons on the service remote control unit.
5. Confirm that OSD indication on the four corners on TV screen changes from on and off light indication to red by pressing a [DISPLAY] button. (It takes one or two seconds.)
6. Turn the power off by pressing main power button on the TV unit, and unplug the AC cord from the AC outlet.

CIRCUIT DIAGRAM [SCHEMATICS]

Syscon-Chroma