Preparation For Adjustment; Test Mode - Kenwood DM-3090 Service Manual

DM-3090
MD SECTION

1. Preparation for adjustment

Test disc
Type
1 High reflection disc TGYS1 (SONY)
2 Low reflection disc
3

2. Test mode

Test mode setting method
1. Holding down the ENTER button and
After 3sec, take your hand off the RESET button first.
(State A is changed to state B .)
2. Insert the playback disc 1 (high reflection disc) or recording disc 2 (low reflection disc).
(During disc loading : display LOADING)
Thus, the test mode state is set.
A tsm e
TEST STOP state
B EJECT
TEST
C AUTO
TEST
Entering the specific mode
Whenever the ENTER button
AUTO pre-adjustment
EEPROM setting
• Canceling the test mode
When the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set.
• Test Mode
1. AUTO pre-adjustment mode
2. AUTO adjustment mode
3. RESULT sub-mode
4. RESULT mode (final adjustment)
5. MANUAL pre-adjustment mode
6. MANUAL adjustment mode
7. EEPROM setting mode
8. TEST-PLAY mode
9. TEST-REC mode
10. EJECT mode
24
ADJUSTMENT
Test disc
Recording minidisc
Head Adjusting transparent
(PLAY/PAUSE) button, press the RESET button.
(State C is set.)
: TEST MODE represents version of MD microcomputer.
(When the
is restored. To restore C again, press the ENTER button.)
is pressed, the mode is changed.
AUTO adjustment
MANUAL adjustment
• Automatic pre-adjustment is performed. (After adjustment the grating adjustment mode is set.)
• The adjustment value is output with the aid of system controller interface.
• Automatic adjustment is performed.
• The adjustment value is output with the aid of system controller interface.
• Continuous playback is performed. (Error rate indication, jump test)
• The measurement value, set value and calculated value are indicated.
• The set value is changed manually (in servo OFF state).
• The set value (after calculation) is indicated.
• The set value is changed manually (in servo OFF state).
• RF side manual adjustment is performed.
• Focus and tracking signal ATT manual adjustment is performed.
• Focus and tracking signal offset setting is performed.
• Focus and tracking signal ATT manual adjustment is performed.
• This mode does not use on the occasion of service.
• Continuous playback from the specified address is performed.
• C1 error rate measurement, ADIP error rate measurement.
• Continuous recording from the specified address is performed.
• Change of record laser output (servo gain is also changed according to laser output)
• TEMP setting (of EEPROM setting)
• CONTROL setting (of EEPROM setting)
• Setting of laser power (record/playback power)
(STOP) button is ressed in the C state, the indication A
RESULT SUB RESULT
MANUAL pre-adjustment