Service Mode - Panasonic RQ-SX77V Service Manual

3. Service Mode

The RQ-SX77V has a Service mode designed to help identify faulty parts in the event of an error.
/ This mode is especially useful when servicing is carried out.
Items required
- Stereo earphones or stereo headphones
- Rechargeable battery or dry cell (R6/LR6, AA, UM-3) housed in case
Service mode functions
1. Unit and stereo earphones test
This checks for problems existing in the unit or stereo earphones.
2. Amplifier test
This test should be run if an "amplifier failure" occurred during
test 1. above.
3.1. Unit and stereo earphones test
Preparations:
1. Remove the unit case by following "Operation Checks and
Component Replacement Procedures".
2. Plug the stereo earphones into the headphones jack.
3. Insert a fully-charged rechargeable battery or a dry cell (R6/LR6,
AA, UM-3) (housed in battery case).
4. Insert cassette tape.
5. Release the hold mode.