Sony HDCU-900 - Manual (Page 59)

3-15 (E)
HDCU-900 MM
3-4-6. WF Output Level Adjustment
Measures : Oscilloscope, SD waveform monitor
Preparation
. Board extension : RC-86 board (front side)
. Board extension : DIF-102 board (rear side)
. 1RV354 (B-4)/RC-86 → mechanical center (ENC LEVEL)
. S811-1 (M-6)/RC-86 → ON
. S811-2 (M-6)/RC-86 → OFF
. S802 (M-4)/RC-86 → 525
. WF monitor select switch/MSU → ENC
. BARS button/MSU → ON
Adjustment Procedure
1. Video level adjustment
Measuring point : TP350 (A-4)/RC-86
Adjusting point :
1RV350 (B-4)/RC-86
Specifications : A = 1428
±5 mV
2. WF OUT level adjustment
Measuring point : WF OUT connector/DIF-102
Adjusting point :
1RV404 (G-4)/DIF-102
Specifications : B = 100.0
±0.5 IRE
(terminated at 75 Z) (for UC)
B = 700.0
±3.5 mV
(terminated at 75 Z) (for CE)
Settings after Adjustment
. After finishing the adjustment, return the switches to the
original setting.
. WF monitor select switch/MSU → ENC
. BARS button/MSU → OFF
n
Do not move
1RV354 (B-4) on the RC-86 board from the
mechanical center.
3-4-7. STAIR CASE Adjustment
Measure : Oscilloscope
Note
Perform temporarily this adjustment after repairing.
When the system is set up, perform the adjustment again
according to the characteristic of the waveform monitor.
Preparation
. Board extension : RC-86 board (front side)
. 1RV354 (B-4)/RC-86 → mechanical center (ENC
LEVEL)
. S802 (M-4)/RC-86 → 525
Adjustment Procedure
Measuring point : TP352 (C-5)/RC-86
Adjusting point :
1RV353 (C-4)/RC-86
1RV352 (C-5)/RC-86
Specifications : A = 10.0
±0.5 V p-p (1RV353)
B = 0
±0.5 V dc (1RV352)
Settings after Adjustment
After finishing the adjustment, return the switches to the
original setting.
n
Do not move
1RV354 (B-4) on the RC-86 board from the
mechanical center.
B
GND
A
A, B
3-4. Video Signal System Adjustment (RC-86 Board)