User manual SONY BKPFL703A MAINTENANCE MANUAL 1ST EDITION

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Manual abstract: user guide SONY BKPFL703AMAINTENANCE MANUAL 1ST EDITION

Detailed instructions for use are in the User's Guide.

 [. . . ] ANALOG VIDEO DISTRIBUTION BOARD

BKPF-L703A

MAINTENANCE MANUAL 1st Edition (Revised 1) Serial No. WARNING
This manual is intended for qualified service personnel only. To reduce the risk of electric shock,  fire or injury,  do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel. 

! [. . . ] Measuring equipment: Digital voltmeter 1. Set the digital voltmeter as follows: Range: AUTO Mode: DC V 2. Connect the probe of the digital voltmeter as follows: +: TP301/VDA-56 (C-3) _: E1/VDA-56 (C-1) 3. Adjustment point: 1RV301/VDA-56 (C-3) Specification: 5. 00 ± 0. 05 V dc

3. Turn on the power of the PFV-L10/L02 and warm up the unit for about 10 minutes. 

S101

1 RV102 1 RV103

ON

OFF

E1

COR101

1
RV103

RV104

1

TP301

1 RV301

VDA-56 board (Side A)

BKPF-L703A

2-3 (E)

2-4. CMR (Common Mode Rejection) Adjustment 2-5. CMR (Common Mode Rejection) Adjustment
n Perform "2-3. +5 V Power Voltage Adjustment" in advance. Measuring equipment: Audio level meter 1. Turn off switch S101 on the VDA-56 board and set shorting plug COR101 to DIFFERENTIAL. Connect an audio signal generator and audio level meter to the connector of BKPF-L703A. Set the output level of the audio signal generator to +5 dBm,  60 Hz. Adjust so that specification A is satisfied. Measurement point: VIDEO OUT 1 (BKPF-L703A connector panel) Adjustment point: 1RV104/VDA-56 (J-1) Specification: A < _65 dBm 5. Turn on switch S101 and return shorting plug COR101 to SINGLE. 

2-5. VIDEO OUT Level Adjustment
n Perform "2-3. +5 V Power Voltage Adjustment" in advance. Measuring equipment: Waveform/vector monitor 1. Supply 75% color bars signal from the signal generator (TSG-170A/271A) to the VIDEO IN connector. Connect and set the waveform/vector monitor. CH-A: VIDEO OUT 1 (BKPF-L703A connector panel) MODE: VECTOR INPUT: CH-A 3. Confirm that each luminance point is located in "4" when the burst level is adjusted to the reference.  [. . . ] TC001-01 2SC1623-L5L6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC001-02 2SC1623-T1-L5L6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC001-02 2SC3356-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC001-02 2SC3356-T1K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  [. . . ]

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