Kenwood DM-SE7 Service Manual
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MINIDISC RECORDER
DM-SE7/SE7(G)/SE9
QQ
3 7 63 1515 0
SERVICE MANUAL
Indicator
(B12-0318-04)
TE
L 13942296513
Knob*
(K29-)
Optic receiving module
(W02-1181-05)
DIGITAL IN
OPTICAL
1
2
SYSTEM
CONTROL
Rectangutar receptacle
(E08-0311-05)
www
.
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
Escutcheon*
(B07-)
minidisc recorder
on/standby
Front glass
(B10-2372-03)
REC
IN
PLAY
OUT
R
L
Phono jack
(E63-0120-05)
x
ao
y
i
8
D.R.I.V.E.
Q Q
3
6 7
1 3
Metallic cabinet*
(A01-)
u163
.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM
2 9
9 4
2 8
© 1997-11/B51-5395-00 (K/K) 3191
0
3
8
7
4
¢
rec
1
¡
level
O.T.E.
1 5
0 5
8
2 9
9 4
Knob*
(K29-)
Power cord bushing
(J42-0083-05)
AC power cord*
(E30-)
m
co
Illustration is DM-SE9.
* Refer to parts list on page 21.
9 9
Panel*
(A60-)
2 8
9 9

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Summary of Contents for Kenwood DM-SE7

  • Page 1 Illustration is DM-SE9. * Refer to parts list on page 21. KENWOOD-Crop. certifies this equipment conforms to DHHS In compliance with Federal Regulations, following are reproduc- Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J. tions of labels on, or inside the product relating to laser product safety.
  • Page 2 DM-SE7/SE7(G)/SE9 3 7 63 1515 0 CONTENTS / ACCESSORIES / CAUTIONS Contents CONTENTS / ACCESSORIES / CAUTIONS....2 EXPLODED VIEW .............19 CIRCUIT DESCRIPTION ..........3 PARTS LIST...............21 PC BOARD ..............6 PARTS DESCRIPTIONS ...........27 SCHEMATIC DIAGRAM ..........9 SPECIFICATIONS ........Back cover Accessories...
  • Page 3: Circuit Description

    DM-SE7/SE7(G)/SE9 3 7 63 1515 0 CIRCUIT DESCRIPTION 1. Main microprocessor : uPD784215GF506 1-1 Microprocessor periphery block diagram (X25)IC21 PROTECT 23 1 A16 2 A17 REFLECT 20 DISCIN 25 MECHA 84 AD0 STTLMT 24 PHOTSW 21 MDM-04 91 AD7 RECSW 19...
  • Page 4 DM-SE7/SE7(G)/SE9 3 7 63 1515 0 CIRCUIT DESCRIPTION 1-2 Pin description Name Description Name Description A16,17 O SRAM address Unused FLDCE O FL display driver CE 54~56 KR1~3 Key return 1~3 EXCK O Extension port clock Unused O SRAM reading...
  • Page 5 Refer to the adjustment ( the page ) of the service manual When turning on while pressing EJECT key, (B51-5387-00) of 1050MD/DM-5090/9090. DM-SE7/SE9 initializes and starts a microprocessor. But, the key to operate is different as follows. INI SW 58pin...
  • Page 6 PC BOARD(Component side view) 3 7 63 1515 0 MD MECHANISM UNIT L 13942296513 MD CONTROL UNIT u163 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 7 PC BOARD(Component side view) 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 8 A MECHA. (D40-1533-*5) (X33-1100-00) 3 7 6 3 1 5 1 5 0 HEAD (5V) DRIVER < > (0V) < > DRAM CN104 HR901 OVER WRITE HEAD (0V) (0V) 0V (3.2V) <3.2> 3.3V < > < > CN103 3.3V 3.3V C184 +3.3V +3.3V...
  • Page 9 MD RECORDING. LOAD-OUT STOP +3.3V 3.3V PLAYBACK RECORD < > MEASUREMENT IMPOSSIBLE H+5V H+5V PLAYBACK DOUT PLAYBACK(DIGITAL OUTPUT) RECORD RECORD(DIGITAL INPUT) C196 512FS GND LINE HGND +B LINE -B LINE DM-SE7/SE7(G)/SE9(K) (1/3) u163 H+5V DM-SE7/SE7(G)/SE9 Y22-7210-00...
  • Page 10 (X25-6012-71) (A/3) H+5V H+5V 3 7 63 1515 0 H GND IC26 BUFFER 512fs 1.1V R232 1.6V 100K D OUT R235 2.5V H+5V 3.4V D IN 3.3V +3.3V 5.1V 5.2V 3.4V 1.7V LOAD-OUT 0.4V 5.2V 2.6V LOAD-IN AC OFF: X33- BACKUP CN101 M+5V...
  • Page 11 : HD74HCT126FPEL Q33,36 : UN5212 or 5.0V IC27 : TC74VHC125F DTC124EUA w w w R256 100K 4.5V 12.5MHz SCLK : 2SA1048(Y,GR) or DM-SE7/SE7(G)/SE9(K) (2/3) D20-32 : MA111 2SA1309A(Q,R) C266 u 1 6 3 4.5V 0.01 R279 DATA R281 100K BUSY TC74HCT7007AF...
  • Page 12 +7.5V +7.5V R130 3.3K -30V -30V -30V -48V -48V : UDZ3.9B -48.0V D3-7,16,33 : MA111 DIGITAL LINE DM-SE7/SE7(G)/SE9(K) (3/3) D13,14 : UDZ16B SIGNAL LINE : UDZ6.2B GND LINE : UDZ5.6B +B LINE -48V : UDZ8.2B -B LINE 2SK246 TC7S08FU 2SD2061...
  • Page 13 DM-SE7/SE7(G)/SE9 EXPLODED VIEW (MECHANISM) 3 7 63 1515 0 : N39-1745-46 ø2.6x10 : N09-2817-05 M1.7x4.5 : N82-2004-46 M1.7x2 : N09-3104-05 ø2x4 : N89-2008-46 M1.7x3 : N09-3279-05 ø2x8 : N89-2606-45 ø2x6 : N09-4145-05 ø2.6x6(BLK) ADx2 L 13942296513 (B/2) AFx2 X29-2580-00 (A/2)
  • Page 14 OPTICAL : N82-2608-46 ø3x6 : N89-3006-46 ø3x8(BLK) : N89-3008-45 X25-6012-71 (B/2) ø3x12(BLK) : N89-3012-45 (A/2) SYSTEM CONTROL L 1 3 9 4 2 2 9 6 5 1 3 (DM-SE7) (B/2) X14-4660-00(A/2) (DM-SE9) O.T.E. DM-SE7/SE9 STANDBY u 1 6 3...
  • Page 15 FLAT CABLE CONNECTOR E40-4296-05 FLAT CABLE CONNECTOR L : Scandinavia K : USA P : Canada R : Mexico 7 : DM-SE7 8 : DM-SE7(G) L : Scandinavia K : USA P : Canada R : Mexico 7 : DM-SE7...
  • Page 16 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 17 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. 3 7 6 3 1 5 1 5 0 Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 18 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 19 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 20 3 7 6 3 1 5 1 5 0 New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Add- Desti- Ref. No Parts No.
  • Page 21 DM-SE7/SE7(G)/SE9 3 7 63 1515 0 PARTS DESCRIPTIONS L 13942296513 u163...
  • Page 22: Specifications

    H : 77 mm (3 - 1 / 16") D : 247 mm (9 - 3 / 4") Weight (Net) ......................2.1 kg (4.6 lb) 1. KENWOOD follows a policy of continuous advancements in devel- 14-6,Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150 Japan Notes opment.

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Dm-se7gDm-se8Dm-se9

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