8-3.
SD Free-Running Frequency Adjustment
8-3-1.
Adjustment Procedure
Tools/Fixtures
• Oscilloscope
TEKTRONIX TDS510A or equivalent
• Frequency counter
ADVANTEST TR5821 or equivalent
Preparations
1.
Turn off the power of the unit.
2.
Remove the bottom plate assembly. (Refer to Section
)
3.
Connect an oscilloscope and a frequency counter to the unit.
PDW-HD1550
Connection diagram
Oscilloscope
CH-3
IN
CH-3
OUT
Frequency counter
INPUT
TP2802
(HPR-55 board)
4.
Turn on the power of the unit and the tools.
Note
Apply power to the unit and the tools to allow warm up of 10 minutes or longer.
SD Free-Running Frequency Adjustment
1.
Set an oscilloscope as follows.
CH-3: DC 2 V/DIV
TIME: 100 µs/DIV
2.
Display the maintenance menu. (Refer to
)
3.
Select “SD 27MHz VCO”.
Menu hierarchy
[M1 : ADJUST]
[A2 : AUDIO/VIDEO/BATTERY]
[A23 : CP VR]
[HD 74MHz VCO]
[SD 27MHz VCO]
The SD 27 MHz VCO ADJUST menu appears.
MAINTENANCE MENU
M1:ADJUST
A2:AUDIO/VIDEO/BATTERY
A23:CP VR
HD 74MHz VCO
SD 27MHz VCO
MAINTENANCE MENU
SD 27MHz VCO ADJUST
80 (HEX)
PRESET : 80
INC/DEC : CTRL.KNOB
TO MENU : MENU KEY
PDW-HD1550
8-5
Содержание PDW-HD1550
Страница 1: ...PROFESSIONAL DISC RECORDER PDW HD1550 SERVICE MANUAL 1st Edition Revised 2 ...
Страница 12: ......
Страница 52: ...Hold the shaded portions Keep away a screwdriver Objective lens Actuator PDW HD1550 1 40 ...
Страница 54: ......
Страница 90: ......
Страница 102: ...Menu hierarchy M2 SERVICE SUPPORT M23 OPTION KEY STATUS INSTALL REMOVE PDW HD1550 4 12 ...
Страница 207: ...4 Install the removed parts by reversing the steps of removal PDW HD1550 6 47 ...
Страница 224: ......
Страница 252: ......
Страница 275: ......
Страница 276: ...PDW HD1550 SY PDW HD1550 CN E 9 878 590 03 Sony Corporation Printed in Japan 2018 8 08 2014 ...