Stair Case Adjustment - Sony HDCU2500 Maintenance Manual

Adjustment Procedure
1. PROMPTER 1 level adjustment
Test Point: PROMPTER1 connector/Camera side
Adjusting Point: MAINTENANCE menu → ANALOG ADJUST (M03) → PROMPTER1 LEVEL
Specification:
A = 140 ±1 IRE (75 Ω termination)
B = 1000 ±7 mVp-p (75 Ω termination)
NTSC
2. PROMPTER 2 level adjustment
Test Point: PROMPTER2 connector/Camera side
Adjusting Point: MAINTENANCE menu → ANALOG ADJUST (M03) → PROMPTER2 LEVEL
Specification:
A = 140 ±1 IRE (75 Ω termination)
B = 1000 ±7 mVp-p (75 Ω termination)
NTSC
5-3-4.

STAIR CASE Adjustment

Measuring equipment
Oscilloscope
Precautions
This adjustment is used tentatively when a repair is made.
This adjustment must be made again according to the waveform monitor characteristics at the system setup.
Preparation
Extend the EN-159A/159B board using an extended board.
Adjustment Procedure
Test Point: TP305 (E-3)/EN-159A/159B board
Adjusting Point:
HDCU2500
PAL
A
PAL
A
B
B
5-9