1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 18
1050MD/DM-5090/DM-9090
CIRCUIT DESCRIPTION
3. Test mode of the unit4. Mechanism test mode
3-1 Setting of the test mode4-1 Setting the test mode
While pressing the [STOP] key, plug the AC power cordConnect a plug of AC power cord to an outlet of AC, while
into the AC wall outlet.pressing PLAY key.
3-2 Contents of the test mode
1 [DOT TEST]4-2 Canceling the test mode
Unplug the AC power cord.
2 [SEG TEST]
<3 [KEY TEST]4-3 Basic operation in test mode
All operations are performed using the JOG DIAL
<4 [CYBER TEST] J type only
(up/down), ENTER key, DELETE key, and SET key. The
<Used for production line onlyfunctions of each key are shown in the table below.
3-3 Function of the test modeFunctionDescription
1 [DOT TEST]JOG DIAL(up/down)Changes the parameter and mode.
The FL display starts the "NIAGARA MODE" by pressingENTER keyProceeds for definition.
the [SET] key in the [DOT TEST] mode.DELETE keyReturns for interrupt.
SET keySkip the mode and go to next step.
2 [SEG TEST]
Turn the FL indication ON by pressing the [SET] key in4-4 Selection of test mode
the [SEG TEST] mode.12 test modes are selected by turning the JOG DIAL.
The FL indication changes cyclically as shown in theNo. DisplayDescriptionSection
1 TEMP ADJUST The work of adjustment is unnecessary -
below by turning the JOG DIAL (4c).
FL LIGHT ONFL LIGHT OFFENGLISHin this mode
2 LDPWR ADJUST Laser power adjustment5-5
3 LDPWR CHECK Laser power check 5-5
3-4 Function of the key4 EFBAL ADJUSTTraverse adjustment5-6
5 FBIAS ADJUST Focus bias adjustment5-7
1 JOG UP (c) and JOG DOWN (4)keys
6 CPLAY MODE Continuous playback mode4-4-1
: Selects the test mode.7 CREC MODEContinuous recording mode4-4-2
[DOT TEST] [SEG TEST] [KEY TEST] [CYBER TEST]8 STT-LIMIT SW Check the mechanism start limit SW position -
9 JUMP MODE Track jump checking mode-
10 SRV DAT READ Servo data reading-
: Selects the FL indication11 EEP MODEE2PPROM data reading or rewrite-
FL LIGHT ONFL LIGHT OFFENGLISH12 EEP INITIAL E2PROM data initializing-
For more information on each adjustment mode, refer to
2 Set keyeach section of 5, OElectrical adjustment�.
If other adjustment mode has been entered incorrectly,
: Proceeds the test mode or return to test mode.
press the DELETE key to exit the mode.
3 Stop key* The number 8 - 12 are not used for service. If these
: Cancel the test mode.mode have been entered incorrectly, press the DELETE
key immediately to exit the mode. Specially, do not use
EEP INITIAL. (E2PROM data has initialized if used it.)
3-5 Microprocessor reset
4-4-1 Operation in continuous playback mode
The microprocessor can be initialized while pressing the
[EJECT] key, plug the AC power cord into the AC wall1. Entering the continuous playback mode
(1)Insert a recordable disc or pre-mastered disc into the
outlet.unit.
(2)Turn the JOG DIAL to display OCPLAY MODE�.
(3)Press the ENTER key. The display then changes from
OCPLAY MODE� to OCPLAY MID�.
(4)After the access operation is completed, the display
changes from OCPLAY MID� to OC=#### a=##�.
Note: Numerals on the display appear the error rate and
ADIP error.
9 |
ACEC
KENWOOD
