User manual KENWOOD DM-3090 SERVICE MANUAL

[. . . ] 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]