Kenwood 1050MD Service Manual page 9

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3. Test mode of the unit
3-1 Setting of the test mode
While pressing the [STOP] key, plug the AC power cord
into the AC wall outlet.
3-2 Contents of the test mode
1 [DOT TEST]
2 [SEG TEST]
3 [KEY TEST]
4 [CYBER TEST] J type only
Used for production line only
3-3 Function of the test mode
1 [DOT TEST]
The FL display starts the "NIAGARA MODE" by pressing
the [SET] key in the [DOT TEST] mode.
2 [SEG TEST]
Turn the FL indication ON by pressing the [SET] key in
the [SEG TEST] mode.
The FL indication changes cyclically as shown in the
below by turning the JOG DIAL (4¢).
FL LIGHT ON
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3-4 Function of the key
1 JOG UP (¢) and JOG DOWN (4)keys
: Selects the test mode.
[DOT TEST] [SEG TEST]
: Selects the FL indication
FL LIGHT ON
2 Set key
: Proceeds the test mode or return to test mode.
3 Stop key
: Cancel the test mode.
3-5 Microprocessor reset
The microprocessor can be initialized while pressing the
[EJECT] key, plug the AC power cord into the AC wall
outlet.
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CIRCUIT DESCRIPTION
FL LIGHT OFF ENGLISH
[KEY TEST] [CYBER TEST]
FL LIGHT OFF ENGLISH
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1050MD/DM-5090/DM-9090
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4. Mechanism test mode
4-1 Setting the test mode
Connect a plug of AC power cord to an outlet of AC, while
pressing PLAY key.
4-2 Canceling the test mode
Unplug the AC power cord.
4-3 Basic operation in test mode
All operations are performed using the JOG DIAL
(up/down), ENTER key, DELETE key, and SET key. The
functions of each key are shown in the table below.
Function
JOG DIAL(up/down) Changes the parameter and mode.
ENTER key
DELETE key
SET key
4-4 Selection of test mode
12 test modes are selected by turning the JOG DIAL.
No. Display
1 TEMP ADJUST The work of adjustment is unnecessary
in this mode
2 LDPWR ADJUST Laser power adjustment
Q Q
3 LDPWR CHECK Laser power check
3 6 7 1 3 1 5
4 EFBAL ADJUST Traverse adjustment
5 FBIAS ADJUST Focus bias adjustment
6 CPLAY MODE Continuous playback mode
7 CREC MODE Continuous recording mode
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
11 EEP MODE E2PPROM data reading or rewrite
12 EEP INITIAL E2PROM data initializing
For more information on each adjustment mode, refer to
each section of 5, "Electrical adjustment".
If other adjustment mode has been entered incorrectly,
press the DELETE key to exit the mode.
* The number 8 - 12 are not used for service. If these
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.)
4-4-1 Operation in continuous playback mode
1. Entering the continuous playback mode
(1) Insert a recordable disc or pre-mastered disc into the
unit.
(2) Turn the JOG DIAL to display "CPLAY MODE".
(3) Press the ENTER key. The display then changes from
"CPLAY MODE" to "CPLAY MID".
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(4) After the access operation is completed, the display
changes from "CPLAY MID" to "C=#### a=##".
.
Note: Numerals on the display appear the error rate and
ADIP error.
9 4 2 8
Description
Proceeds for definition.
Returns for interrupt.
Skip the mode and go to next step.
Description
0 5 8 2 9 9 4 2 8
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Section
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5-5
5-5
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5-6
5-7
4-4-1
4-4-2
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