Sony Walkman MZ-NF810CK, Руководство по обслуживанию

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24
MZ-NF810/NF810CK
VOL+
key
.
key on the
remote commander
>
key on the
remote commander
x
key
Overall adjustment mode
(Title display)
Continuing overall adjustment
[END SEARCH]
key
[P MODE]
key on the
remote commander
DISPLAY
key on the
remote commander
Electrical
offset
adjustment
MO overall
adjusting
CD overall
adjusting
Temperature
correction
and
Power supply
adjustment
auto item feed
>
key
t
.
key
T
• Overall Adjustment Mode (Title Display)
Note:
Adjust the CD first, when performing adjustment.
000
Assy**
: (Disc mark) At end of power supply adjustment: Outside lit
** : Left side = MO overall adjustment information
F* : MO overall adjustment completed
1* : Manual adjustment exists (overall adj. not completed)
0* : Not adjusted
Right side = CD overall adjustment information
*F : CD overall adjustment completed
*1 : Manual adjustment exists (overall adj. not completed)
*0
: Not adjusted
Remote commander LCD display
Laser Power Check
Note: If result of measurement of the laser power does not satisfy the
specification, either replace the OP (optical pick-up unit) or check
whether the laser circuit block is working correctly.
When the result of laser power measurement does not satisfy the
specification even though the laser circuit block is confirmed to be
working correctly, replace the OP (optical pick-up unit).
• Connection
• Checking method
1. Select the manual mode of test mode (see page 14), and set the
laser power checking mode (item number 010).
2. Press the key continuously until the optical
pick-up moves to the most inward track.
3. Open the cover and set the laser power meter on the objective
lens of the optical pick-up.
4. Press the key, and set the laser MO read check mode (item
number 011).
5. Check that the laser power meter reading is 0.800 ± 0.10 mW.
6. Press the
key, and set the laser CD read check mode (item
number 012).
7. Check that the laser power meter reading is 0.910 ± 0.11 mW.
8. Press the key, and set the laser MO (X2 speed) write check
mode (item number 013).
9. Check that the laser power meter reading is 4.95 ± 0.59 mW.
10. Press the key, and set the laser MO (X4 speed) write check
mode (item number 014).
11. Check that the laser power meter reading is 5.93 ± 0.71 mW.
12. Press the
x CANCEL/CHG key to quit the manual mode, and
activate the test mode (display check mode).
laser
power meter
Optical pick-up
objective lens
010
Laser
Remote commander LCD display
.
T
>
t
011
Lrefpw **
Remote commander LCD display
>
t
012
HrefPw **
Remote commander LCD display
>
t
013
WrPwLo **
Remote commander LCD display
>
t
014
WrPwHi **
Remote commander LCD display
Overall Adjustment Mode
• Configuration of Overall Adjustment Mode