Sony SLV-E730UX - 2-2. POWER SUPPLY ADJUSTMENT

7-2
Mode E-E
Measuring Instrument Digital voltmeter
+F, –F check
Measurement Point Pin !§ (+), !ª (–) of CN601
Specified Value 2.9 ± 1 Vdc
–11.5 V check
Measurement Point Pin !• of , CN601
Specified Value –11.5 ± 1 Vdc
D6 V check
Measurement Point Pin !¢ of CN601
Specified Value 5.9 ± 0.5 V
SW12 V
Measurement Point Pin !™ of CN601
Specified Value 12 ± 1 Vdc
MTR12 V check
Measurement Point Pin 7, 8 of CN601
Specified Value 13.5 ± 1 Vdc
+13 V check
Measurement Point Pin 5, 6 of CN201
Specified Value 13.5 ± 1 Vdc
+38 V check
Measurement Point Pin 4 of CN601
Specified Value 38.0 ± 3 Vdc
SW5 V check
Measurement Point Pin 2, 3 of CN601
Specified Value 5 ± 0.5 Vdc
2-2. POWER SUPPLY ADJUSTMENT
2-2-1. Power Supply Check
(SR-825 BOARD)
Checking Method:
1) Confirm that each voltage meets its specified value.
Checking power supply
Video system
adjustment
Servo system adjustment
Audio system
adjustment
2-1-5. Specified I/O Level and Impedance
Input/output terminal
Video inputs LINE IN : phono jacks
EURO-AV : 21-pin (Pin @º) 1 Vp-p, 75 Ω,
unbalanced, sync nagative
Audio inputs LINE IN : phono jack
47 kW, –75 dBs (0 dBs = 0.775 Vrms)
EURO-AV : 21-pin (Pin 2 and 6)
More than 10 kΩ, –4 dBs
Video outputs LINE OUT : phono jack
EURO-AV : 21-pin (Pin !ª) 1 Vp-p, 75 Ω,
unbalanced, sync negative
Audio outputs LINE OUT : phono jacks
–7.5 dBs at load
impedance 47 kΩ
Output impedance : less than 10 kΩ
EURO-AV : 21-pin (Pin 1 and 3)
Output impedance : less than 1 kΩ
–4 dBs with 10 kΩ load
2-1-6. Adjusting Sequence
Make the electrical adjustment in the following sequence.