Rising Check - Sony DSR-PD170 Service Manual

DSR-PD170/PD170P/PD190P
2-3-7. Curl Checking and Adjustment
• Checking / adjusting method
Run the tracking tape (J-20) (exclusive) in the CUE mode or REV
mode, and check that the tape runs along each flange.
Also check that there are no large curls on each tape guide.
TG1 TG2
Coaster (S)
assembly
TG2
TG1
2-3-8. CUE / REV Check
• Checking method
Run the tracking tape (J-20) in the CUE mode or REV mode, and
check that the intervals of the waveform peaks are consistent.
CUE mode
REV mode
• If not even
If the waveform peaks are not even, perform "Tracking adjustment"
again.
There should be no large curls on
the upper flange of TG3 and TG6.
TG3 TG4 Drum
TG3 TG5
TG4
Drum
• If the curl is large or there are clearances
If the TG3 curl is large or clearances exist, replace the coaster (S)
assembly. If the TG6 curl is large, or clearances exist, replace the
coaster (T) assembly. If curls or clearances exist on the TG7, rotate
TG7 and adjust its height.
Note: Be careful not to rotate TG7 excessively.
For details on how to replace the coaster (S) / (T) assembly, refer to
2-2-13 on page 6-48.
TG5 TG6 TG7
There should be no large curls on the
upper and lower flanges of TG7.
Capstan
Use a mirror (J-15) for checking for TG7.
TG6
Easy to check with removing the damper
assembly. (Refer to 2-2-3. Damper Assembly
on page 6-42.)
2-3-9.

Rising Check

• Checking method
Check that when the tracking tape (J-20) is switched from the STOP,
CUE, REV, FF, REW modes to the PLAYBACK mode, the
waveform rises horizontally within 2 seconds.
Perform this 2 or 3 times.
Mode changes
STOP
CUE
REV
FF
REW
• Check after checking rising
• Check that the tape loads and unloads smoothly.
• Play a self-recorded or already recorded tape, and check that the
sound and images are normal.
6-56
Coaster (T) assembly
TG7
PLAYBACK
PLAYBACK
When switching the modes,
PLAYBACK
the waveform should rise
within 2 seconds 2 or 3 times.
PLAYBACK
PLAYBACK