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2-3.
2-4,
Operation Check Mode
1) Checks after the test mode has started up
The following playback audio circuits can be checked.
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The circuits that can be checked: «00.0... ee DAC, LINE AMP, HEADPHONES AMP
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Output levels oe
eseeseseeeteteneeseseenstensenes 1 kHz, -21 dB
2) Switch status check
ON/OFF statuses of the respective switches of the machine and mechanism can be checked on display.
Switch Name
Indication.on Display
Usable disc
REC PROTECT | When the write-protection tab of a disc is closed to ON]
ROCK
Record/playback disc
REFRECT
When the high reflection disc (CD) is used
[PoP
|
Playback only disc
Be
When the pickup is the positioned at the innermost
track (when the LIMIT switch is ON)
How to Switch to Servo Standby Mode
When the MD test mode has been established, the mode is changed to the servo standby mode and "ALL SV OFF" is displayed
by pressing the i (CLEAR) button. The following various check modes can be entered from this mode. Returns to "ALL SV
OFF" by pressing the ll button.
13G
;
.
1G
AUTO MARK TIME MARK (888) on a0
(ESS
RDS AG] (t@)
WiD(GES) TAPE (REC)
A Te FOP GAZ) Ee
| Done
a=.
CC)
(S
WS
2-5.
2-6.
2-7.
>
12G
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
Checking the Sled Operation
1) Pickup moves to the outmost track by pressing the >> (F.SKIP) in the "ALL SV OFF" state. The message "T.SLED FWD"
is displayed.
2) Pickup moves to the innermost track by pressing the <4 (B.SKIP) in the "ALL SV OFF" state. The message "T.SLED
FWD" is displayed.
Checking the Laser Output
1) The laser power output level can be switched by every pressing of the "MD EDIT" in the "ALL SV OFF state".
The laser power output is repeatedly changed in the following order of: OFF
+ LASER READ ~ LASER1/2 > LASER
WRITE — OFF. The displays are shown as described by the following table.
MODE
Indication on display
ALL SY OFF
LASER READ
LASER READ
LASER 1/2 WRITE
LASER 1/2
LASER WRITE
LASER WRITE
2) After confirming the message, press the Il button to turn off the "ALL SV OFF" display.
Checking Operation of OWH (Over Write Head)
The OWH can be moved up and down by pressing the "CD - MD DIRECT REC" and the "EJECT" buttons in the state of
loading-completed.
,
"CD > MD DIRECT REC" buttom ou... rsseseceeeeees OWH DOWN
"EJECT" Dutton... cccccssscesecsseeseesseseseetenceesseecneeess OWH UP
Note:
Do not move down the OWH down when the high reflection disc (CD) is in use.
43
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