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Kenwood DEM-9991D Service Manual
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Kenwood DEM-9991D Service Manual

Laser disc rf demodulator
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LASER DISC RF DEMODULATOR
DEM-9991D
SERVICE MANUAL
Chassis *
(A10-)
Slide switch
(S62-0008-05)
Rear panel
(A80-3383-04)
DIGITAL OUTPUT
COAX.
EXTERNAL DC SUPPLY DC 12V
Phono jack
(E63-1035-05)
LASER DISC RF DEMODULATOR DEM-9991D
OFF
OPT.
COAX.
RF INPUT
DIGITAL INPUT
COAX.
AC-3 RF
© 1998-2/B51-5412-00 (K/K) 3728
Panel
(A60-1377-04)
RF
POWER
LOCK
Indicator
(B08-9063-04)
Optic receiving module
(W02-1181-05)
DC IN
OPT.
DC jack
(E30-0315-05)
* Refer to parts list on page 8.

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Summary of Contents for Kenwood DEM-9991D

  • Page 1 LASER DISC RF DEMODULATOR DEM-9991D SERVICE MANUAL © 1998-2/B51-5412-00 (K/K) 3728 Chassis * Panel (A10-) (A60-1377-04) LASER DISC RF DEMODULATOR DEM-9991D POWER LOCK OPT. COAX. Slide switch Indicator (S62-0008-05) (B08-9063-04) Rear panel Optic receiving module (A80-3383-04) (W02-1181-05) DIGITAL OUTPUT RF INPUT...

  • Page 2: Power Switch

    DEM-9991D CONTROLS 1 POWER switch Press to turn the power on (OPT./COAX. position) or off. • Regardless of the OPT./COAX. switch setting, the input is switched automatically to the Dolby Digital RF input when ever a Dolby Digital RF signal is input.
  • Page 3 Pin description Port NO Port Name Descriptions Port NO Port Name Descriptions – GND (0V). TLDB Test port of IC. – Power supply (+5V). Test port of IC. RESET System reset. L = reset. Output port of IC test. OSCON Oscillation control.
  • Page 4 PC BOARD(Component side view) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 5 SIGNAL LINE recommended parts (refer to GND LINE +B LINE parts list). indicates safety criti- cal components. For continued DEM-9991D protection against risk of fire, UN5119 UPC7805AHF TC74HCU04AF UN5212 TA7808S replace only with same type and...

  • Page 6: Exploded View

    DEM-9991D EXPLODED VIEW AC-3 OUTPUT / INPUT DC IN X88-1060-10 OPT./COAX. ø 3x8 (BLK) : N89-3008-45 ø 3x8 (BLK) : N09-3023-05 DEM-9991D Parts with exploded numbers larger than 700 are not supplied.
  • Page 7 Desti- Desti- Ref. No Parts No. Description Ref. No Parts No. Description marks ress Parts nation ress Parts nation marks DEM-9991D C30 ,31 CK73FB1E104K CHIP C 0.10UF CC73FSL1H470J CHIP C 47PF A10-3420-04 CHASSIS CC73FSL1H221J CHIP C 220PF A10-3420-04 CHASSIS KYMCXT...
  • Page 8 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. Description ress Parts nation marks RK73FB2A331J CHIP R 1/10W RK73FB2A750J...

  • Page 9: Specifications

    (Accessory only for regions where use is neces- sary.) 1. KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. 2. Sufficient performance may not be exhibited at extremely cold locations (where water freezes.).

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