Sony MZ-R55 Service Manual page 62

LOW REFLECTION CD TRAVERSE ADJUSTMENT
Connection :
MAIN board
TP5980 (TE)
AP5430 (VC)
Adjustment Method :
1. Set the ser vo mode of the test mode (Mode :
( ke y, and set the lo
2. Press the
mode (Mode : 040) using the
3. Inser t an y MO disk a vailab le on the market.
4. When the ( ke y is pressed,
adjustment mode (Mode :
CD focus search adjustment mode (Mode : 041).
5. Press the P ke y to perf orm automatic adjustment,
that the tra ver se wa veform is symmetrical at the top and bottom.
(Traverse waveform)
0 V
Specification : A = B, C
6. Chec k that the tra ver se le vel at this time is abo
7. Press the p ke y.
8. Exit the test mode.
Adjustment Location : See page 19.
oscilloscope
000).
w reflection CD test adjustment
VOLUME + or – ke y.
the lo w reflection CD FE balance
042) will be set after lo w reflection
and c hec k
A
B
> =
0.9 Vp-p
ve 0.9 Vp-p.
CD TRAVERSE ADJUSTMENT
Connection :
MAIN board
TP5980 (TE)
AP5430 (VC)
Adjustment Method :
1. Set the ser vo mode of the test mode (Mode :
( ke y, and set the CD test adjustment mode (Mode
2. Press the
: 050) using the VOLUME + or – ke y.
= or + ke y and mo ve the optical pic
3. Press the
center circumference.
4. Inser t a test CD (TD YS-1).
5. When the ( ke y is pressed,
mode (Mode : 052) will be set after CD focus search adjustment
mode (Mode : 051).
6. Press the P ke y to perf orm automatic adjustment,
that the tra ver se wa veform is symmetrical at the top and bottom.
(Traverse waveform)
C
0 V
7. Chec k that the tra ver se le vel at this time is abo
8. Press the p ke y.
9. Exit the test mode.
Adjustment Location : See page 19.
– 18 –
oscilloscope
000).
k-up to the
the CD FE balance adjustment
> =
Specification : A = B, C 1.0 Vp-p
ve 1.0 Vp-p.
and c hec k
A
C
B