24
MZ-N505
011
###S**
Set LCD display
###
: Address
**
: Adjusted value
012
###S**
Set LCD display
###
: Address
**
: Adjusted value
013
###S**
Set LCD display
###
: Address
**
: Adjusted value
LASER POWER CHECK
• Connection
• Checking Method
1. Select the manual mode of test mode (see page 14), and set
the laser power adjusting 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
N
key, and set the laser MO read adjustment mode
(item number 011).
5. Check that the laser power meter reading is 0.81
±
0.08 mW.
6. Check that the voltage both ends (TP (+) and TP (–)) of resis-
tor R521 at this time is below 44 mV.
7. Press the
N
key, and set the laser CD read adjustment mode
(item number 012).
8. Check that the laser power meter reading is 0.97
±
0.10 mW.
9. Check that the voltage both ends (TP (+) and TP (–)) of resis-
tor R521 at this time is below 44 mV.
10. Press the
N
key, and set the laser MO write adjustment mode
(item number 013).
11. Check that the laser power meter reading is 4.95
±
0.50 mW.
12. Check that the voltage both ends (TP (+) and TP (–)) of resis-
tor R521 at this time is below 80 mV.
13. Press the
x
key to quit the manual mode, and activate the
test mode (display check mode).
Checking and Connection Location: MAIN board (See page 25)
digital voltmeter
MAIN board
laser
power meter
Optical pick-up
objective lens
TP (+)
TP (–)
010
Laser
Set LCD display
Summary of Contents for MZ-N505 OpenMG Jukebox NOTES on installing & operating
Page 65: ...MZ N505 65 MEMO ...
