[. . . ] STEREO MINIDISC RECORDER
DM-3090
SERVICE MANUAL
© 1997-11/B51-5396-00 (K/K) 1812
KENWOOD badge (B43-0302-04)
Front glass (B10-2457-08)
Front panel (A60-1370-08)
Knob (JOG) (K29-6946-08)
Knob (REC/HP) (K29-6947-08)
REC
REC LEVEL
STEREO MINIDISC RECORDER
0
10
PHONES LEVEL MULTI CONTROL MIN MAX
TIMER/ DELETE
TIME DISPLAY ON/STAND BY DISPLAY/CHARAC. TRACK/EDIT
ENTER
PHONES
Knob (POWER) (K27-2261-08)
Panel (A29-0898-08)
Knob (K27-2262-08)
Head phone jack (E11-0345-08)
AC power cord bushing (J42-0338-08)
Optical digital input (W02-2643-08)
Analogue output terminal (E63-1031-08)
DIGITAL
LINE
OPT. 2 REC IN
PLAY OUT
PLAY OUT
REC IN
1 REC IN
L
L
R
R
RESET
AC power cord * (E30-)
Optical digital output (W02-2643-08) Digital input terminal (E63-1032-08)
Switch (RESET) (S68-0091-08)
*Refer to parts list on page 49.
In compliance with Federal Regulations, following are reproductions of labels on, or inside the product relating to laser product safety, KENWOOD-Corp. certifies this equipment conforms to DHHS Regulation No. 21 CFR 1040. 10, Chapter 1, Subchapter J. [. . . ] Check the soldering joint of IC1601 and CNP1602.
No
No
23
DM-3090
ADJUSTMENT
MD SECTION
1. Preparation for adjustment
Test disc Type 1 2 3 Test disc High reflection disc TGYS1 (SONY) Low reflection disc Recording minidisc Head Adjusting transparent
2. Test mode
Test mode setting method (PLAY/PAUSE) button, press the RESET button. Holding down the ENTER button and After 3sec, take your hand off the RESET button first. Insert the playback disc 1 (high reflection disc) or recording disc 2 (low reflection disc). (During disc loading : display LOADING) (State C is set. ) Thus, the test mode state is set. TEST STOP state (When the (STOP) button is ressed in the C state, the indication A is restored. To restore C again, press the ENTER button. ) B EJECT TEST C AUTO TEST Entering the specific mode Whenever the ENTER button is pressed, the mode is changed. AUTO pre-adjustment AUTO adjustment RESULT SUB EEPROM setting MANUAL adjustment
RESULT
MANUAL pre-adjustment
· 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. (After adjustment the grating adjustment mode is set. ) · The adjustment value is output with the aid of system controller interface. · The adjustment value is output with the aid of system controller interface. (Error rate indication, jump test) · The measurement value, set value and calculated value are indicated. · Focus and tracking signal ATT manual adjustment is performed. · Focus and tracking signal ATT manual adjustment is performed. · 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)
3. Step 1 Step 2 Step 3 Setting Method Testmode STOP state Press once the ENTER button. The slide moves to the innermost periphery, and automatic pre-adjustment is started. HAoRFgSAgSBgPTGPCHGTGGCHRCG SEGRFGSAGHAOHEOTCOLAO End of adjustment If adjustment is OK, Step 4. Grating adjustment, adjustment value output Press once the MD STOP button. STEP 2 AUTO pre-adjustment menu Remarks [tsm [ [ Display e ] ] AUTO
:______]
Step 4
[_COMPLETE_]
Step 5
[ AUTO ]
·
: Adjustment name,
: Address
2. Step 1 Step 2 Step 3 Setting Method Testmode STOP state Press the ENTER button two times. [. . . ] 400 rpm ~ 900 rpm (CLV)
[D/A, A/D converter]
D/A converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Bit Sampling frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44. 1 kHz
[Digital audio performance]
Frequency responce (playback mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Hz ~ 20 kHz, ± 1 dB Signal to noise ratio (playback mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]