Yamaha GX-900 Service Manual page 34

GX-900
9. TEST-REC mode
Use a disc for confirmation of recording function. (It is used to check the REC function at the specified address.)
Step Setting method
1 Load a disc.
2 Press the MD EDIT button twice.
3 Press the REC/PAUSE(MD) button.
4 Press the REC/PAUSE(MD) button.
5 Press the CHARACTER button.
• Every time the MD EDIT button is pressed in the address setting mode, the address changes in the order of 0050-> 03C0 -> 0700 -> 08A0
-> 0050 -> —
• Pressing the r(MD) button in the TEST-REC menu changes to the AUTO pre-adjustment menu.
10. INNER mode
Step Setting method
1 Load a disc.
2 Press the w/d(CD) button.
3 Press the REC/PAUSE(MD) button.
4 Press the CHARACTER button.
• Pressing the r(MD) button in the INNER menu changes to the AUTO pre-adjustment menu.
11. EJECT mode
Step Setting method
1 EJECT status in the TEST mode
2 Press the PROG button.(REMOCON)
3 Press the PROG button.(REMOCON)
4 Press the PROG button.(REMOCON)
5 Press the MD EDIT edit button.
6 Press the w/d(CD) button.
7 Press the CHARACTER button.
Confirmation of pick-up laser power
Recording and reproduction can be checked by using the laser power meter. However it should be used for checking only
because there is variation in its measurement.
When the measured value is excessively deviated from the reference value, replace the pick-up.
Reference value (measured at room temperature of 25 °C)
During reproduction (ppw) : 0.72 ± 0.1 mW
During recording : 5.5 ± 0.5 mW
Note : Be very careful when using the laser power meter. The laser beam would cause damage to your eye if exposed to it
directly.
33
Remark
AUTO pre-adjustment menu
TEST-REC menu
ADDRESS setting (The initial value of the address is displayed.)
Set the search output to "H" while searching and back to "L" when
continuous reproduction is started.
Continuous recording
TEST-REC menu
Remark
AUTO pre-adjustment menu
INNER menu
INNER switch position is measured.
(Both SUBQ address and C1 error are displayed.)
INNER menu
Remark
EJECT menu (No disc is loaded.)
Maximum power output status
Recording power output status
Reproduction power output status
To TEMP setting of EEPROM setting
(Refer to TEMP setting of EEPROM.)
To CONTROL setting of EEPROM setting
(Refer to CONTROL setting of EEPROM.)
EJECT menu
Display
[ _ AUT _ YOBI _ ]
[ TEST _ REC _ _ ]
[ a0050 _ pw ZZ ]
[ a XXXX _ pw ZZ ]
[ TEST _ REC _ _ ]
Display
[ _ AUT _ YOBI _ ]
[ _ _ INNER _ _ _ ]
[ s XXXX c YYYY ]
[ _ _ INNER _ _ _ ]
Display
[ _ _ EJECT _ _ _ ]
[ xpw _ _ _ _ _ _ _ ]
[ rpw _ _ _ _ _ _ _ ]
[ ppw _ _ _ _ _ _ _ ]
[ _ _ EJECT _ _ _ ]