5-180
GY-8240UWD
GY-8240FC
CCM-33 Board (A Side)
5-16. Telefile Adjustment
When replacing the CCM-33 board or SE-606 board, be sure to perform the following adjustment.
Measuring instrument:
.
Adjusting plus screwdriver (Ceramics)
.
Oscilloscope
.
Personal computer
.
Terminal emulator software
.
Connecting cable (RS-232C crossed cable)
n
Refer to Section 5-14-1 for the measuring instruments used.
Preparations
1.
Turn the power off.
2.
Remove the front panel. (Refer to Section 1-1.)
Adjustment Procedure
Pay careful attention to the following points to perform the adjustment correctly.
.
Do not perform adjustments on the SE-606 board of other GY-8240 machines.
.
The SE-606 board must be attached to the unit.
.
Do not place cassette, memory labels, and other metal objects (excluding the chassis plate) near the SE-
606 board.
1.
Set the oscilloscope as follows.
VERTICAL
CH1:
5V/DIV, DC
CH2:
5V/DIV, DC
MODE: CH2 INVERT, ADD, 20 MHz BW LIMIT = OFF
HORIZONTAL
20 ns/DIV
TRIGGER
CH1, DC
LEVEL: 5V
2.
Connect the oscilloscope as follows.
CH-1:
TP1/CCM-33 board
GND:
Chassis plate
CH-B:
TP2/CCM-33 board
GND:
Chassis plate
n
Do not connect the GND of the probe to the CCM-33 board. Otherwise the
CCM-33 board may damage.
3.
Connect the connector (OPTION1) of the IF-780 board and personal computer
using the connecting cable.
5-16. Telefile Adjustment
TP1
TP2
CT1
CN1
Содержание GY-8240FC
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Страница 241: ...5 25 GY 8240UWD GY 8240FC Dew sensor Tape top sensor Top view Tape end sensor 5 4 DIAG Mode Sensor Layout ...
Страница 249: ...5 33 GY 8240UWD GY 8240FC Unthread end sensor Threading ring Thread end sensor Threading motor Top view 5 4 DIAG Mode ...
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Страница 444: ...Printed in Japan Sony Corporation 2003 2 08 B P Company 2000 GY 8240FC SY GY 8240UWD SY E 9 967 913 06 ...