Pgll Adjustment; Vsub Voltage Adjustment; Gain 0 Db Adjustment; Auto Iris Video Level Adjustment - Sony SSC-M370 Service Manual

4-4-1. PGLL Adjustment
STEP No.: "01"
Object: Close 'C'
Equipment: Oscilloscope (DC500 mV 0.2 uS)
Measurement point: TG-31 Board TP402
Adjustment point: JIG (RV1)
Specification:Set point +0.15 V
Adjustment method: Referring to the chart, adjust to the
voltage set point in accordance with the mark of the
PGLL voltage (left figure of the two) posted on the
metallic bar of the front block.(See page 2-4)
*MARK (L) PGLL (V)
*MARK (L):Left figure of the two
4-4-2. VSUB voltage Adjustment
STEP No.: "02"
Object:Close 'C'
Equipment: Oscilloscope (DC 2.0 V 1mS)
Measurement point: TG-31 Board TP401
Adjustment point: JIG (RV1)
Specification:Set point +0.15 V
Adjustment method: Referring to the chart, adjust to the
voltage set point in accordance with the mark of the
VSUB voltage (right figure of the two) posted on the
metallic bar of the front block. (See page 2-4)
*MARK (R) *MARK (R) VSUB(V)
*MARK (R): Right figureof the two
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| SSC-M370/M370CE
4-4-3. GAIN 0 dB Adjustment
(1)
STEP No.: "03"
Object: Grayscale chart
Equipment: Oscilloscope (AC 50 mV 10 pS)
Measurement point: BI-32 Board CN101 1pin (GND: 2 pin)
Adjustment point: Lens iris
Specification: A=200 +20 mV
(2)
STEP No.: "03"
Object: Grayscale chart
Equipment: Oscilloscope (AC 100 mV 10 u:S)
Measurement point: PR-32 Board TP301
Adjustment point: JIG (RV1)
Specification: A=500 +30 mV
4-4-4. Auto lris Video Level Adjustment
STEP No.: "04"
Object: Grayscale chart
Equipment: Oscilloscope (AC 100 mV 10uS)
Measurement point: H-30 Board TP601
Adjustment point: JIG (RV1)
Specification: 700 +50 mV