Philips 55PP9401 Service Manual page 50

Pre-Focus Adjustment
Adjustment Preparation
1. The preheat run should be completed.
Adjustment Procedure
1. Short the 2-pin subminiature connector(s) on the appropriate CRT board to remove
the colors not being adjusted in order to adjust one color at a time. The colors may be
adjusted in any order.
Note: PTSR is the connector on the Red CRT board.
Note: PTSG is the connector on the Green CRT board.
Note: PTSB is the connector on the Blue CRT board.
2. Adjust the Red Focus VR for proper focus (note that this is a coarse adjustment; a fine
adjustment will be made later).
3. Repeat for Blue and Green. When the adjustments are completed, remove all short circuits.
Focus VRs
7618 Service Adjustments page 19