SONY SLVE850B/UX/E
Manual de Servicio

2-1-5. Input/Output Levels and Impedance Video input: LINE IN EURO Input signal: 1Vp-p, 75ohms, unbalanced, sync negative Video output: LINE OUT EURO Output signal: 1Vp-p, 75ohms, unbalanced, sync negative LINE IN EURO

2-2. POWER SUPPLY CHECK 2-2-1. Output Voltage Check (MA-316 Board) Mode E-E Measuring Instrument TUNER 30V Check Measurement point Specified value VCC 12V Check Measurement point Specified value D 5V Check Measurement point Specified value Digital voltmeter D702 Cathode 33 ± 2V IC530 Pin 2 12.0 ± 0.3V D160 Cathode 5.2 ± 0.3V

Audio input:

Input level: �7.5 dBs (0dBs= 0.775Vrms) Input impedance: more than 47 kilohms Audio output: LINE OUT EURO Standard level: �7.5dBs at load impedance 47 kilohms Output impedance: less than 10 kilohms 2-1-6. Adjustment Sequence The adjustments should be performed in the following sequence.

[Check Method] 1) Each of these supply voltages must meet its specified value. 2-3. SERVO SYSTEM CHECK Unless otherwise specified, set the switches to the following positions. � INPUT SELECT switch ................................................. LINE 1 � TAPE SPEED switch ............................................................ SP 2-3-1. RF Switching Position/ AF Switching Position Adjustments (MA-316, RP-231 Boards) [Adjustment Purpose] To adjust the link of the A-ch and B-ch of the tape playback outputs. To make the unit compatible with other tapes and units. If this specification is not satisfied, the link will appear on the screen and the screen will be disrupted, etc. Mode Signal Measurement point Playback Alignment tape: SP color bar portion CH1: Video LINE OUT (RF switching position) CN341 pin 1 (HF ADJ) (AF switching position) (RP-231 board) CH2: CN261 pin 3 (RF SWP) (RP-231 board) Oscilloscope 6.5 ± 0.5H (416 ± 32 µsec)

Power Supply Check

Servo System Adjustments

Audio System Adjustments

Video System Adjustments

Measuring instrument Specified value

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