5-62
3-2.
POWER SUPPLY SYSTEM ADJUSTMENT
1.
Power Supply Voltage Check
Power Block (U-2 Board)
Mode
Playback
Measuring Instrument
Digital voltmeter
UNSW6V Check
Measuring Point
Pin
1
of CN11
Specified Value
6.0 ± 0.5 Vdc
UNSW3.1V Check
Measuring Point
Pin
2
of CN11
Specified Value
3.1 ± 0.2 Vdc
VIDEO5V, AUDIO5V Check
Measuring Point
Pin
3
,
7
of CN11
Specified Value
5.0 ± 0.12 Vdc
SW3.1V Check
Measuring Point
Pin
4
of CN11
Specified Value
3.1 ± 0.1 Vdc
VIDEO–5V, AUDIO–5V Check
Measuring Point
Pin
6
,
9
of CN11
Specified Value
–5.0 ± 0.12 Vdc
SW5V Check
Measuring Point
Pin
3
of CN11
Specified Value
5.0 ± 0.12 Vdc
DRUM6V Check
Measuring Point
Pin
4
of CN10
Specified Value
6.0 ± 0.5 Vdc
MOTOR14V Check
Measuring Point
Pin
6
of CN10
Specified Value
14.0 ± 2 Vdc
2.
Video/Audio Block Power Supply Voltage Check
Power Block (U-2 Board)
Mode
Playback
Measuring Instrument
Digital voltmeter
UNSW6V Check
Measuring Point
Pin
2
of CN12
Specified Value
6.0 ± 0.5 Vdc
UNSW3.1V Check
Measuring Point
Pin
4
of CN12
Specified Value
3.1 ± 0.2 Vdc
UNSW–9V Check
Measuring Point
Pin
7
of CN12
Specified Value
–9 ± 0.5 Vdc
UNSW14V Check
Measuring Point
Pin
8
of CN12
Specified Value
14 ± 2.0 Vdc
UNSW12V Check
Measuring Point
Pin
3
of CN12
Specified Value
12.0 ± 1 Vdc
3-1-6.
Input/ Output Level and Impedance
LINE IN
Video input
BNC connector
Input signal: 1 Vp-p
(75 ohms unbalanced)
S Video input
Mini DIN 4-pin
Luminance signal: 1 Vp-p
(75 ohms unbalanced)
Chrominance signal: 0.286 Vp-p
(NTSC), 0.3 Vp-p (PAL),
(75 ohms unbalanced)
Audio input
Phono jack (L, R)
Input level: 2 Vrms (full bit)
Input impedance: more than 47 kohms
LINE OUT
Video output
BNC connector
Output signal: 1 Vp-p
(75 ohms unbalanced)
S Video output
Mini DIN 4-pin
Luminance signal: 1 Vp-p
(75 ohms unbalanced)
Chrominance signal: 0.286 Vp-p
(NTSC), 0.3 Vp-p (PAL),
(75 ohms unbalanced)
Audio output
Phono jack (L, R)
Output level: 2 Vrms (full bit)
Output impedance: less than 10 kohms
Summary of Contents for DSR-20MD
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Page 223: ... 294 DSR 20MD 20MDP 9 974 189 11 Sony EMCS Co 2007E0500 1 2007 5 Published by Kohda TEC ...