Accessories; Cautions; If A Problem Occurs; Table Of Contents - Kenwood DM-3090 Service Manual

DM-3090
CONTENTS
CONTENTS/ACCESSORIES/CAUTIONS...................2
CONTROLS .................................................................3
DISASSEMBLY FOR REPAIR.....................................5
BLOCK DIAGRAM .......................................................7
CIRCUIT DESCRIPTION .............................................9
TROUBLE SHOOTING ..............................................16

Accessories

Remote control unit (1)
(A70-1208-08)

Cautions

Beware of condensation
When water vapor comes into contact with the surface of
cold material, water drops are produced. If condensation
occurs, correct operation may not be possible, or the unit
may not function correctly.
This is not a malfunction, however, and the unit should be
dried.
(To do this, turn the POWER switch ON and leave the unit
as it is for several hours.)

If a problem occurs

If this product is subjected to strong external interference
(mechanical shock, excessive static electricity, abnormal
supply voltage due to lightning, etc.) or if it is operated
incorrectly, it may malfunction or the display may not
function correctly. If such a problem occurs, do the
following:
• Unplug the AC power lead from the AC socket.
• Wait about 20 - 30 seconds and then plug the AC power
lead back into the AC socket.
• Press the reset key on the back of the unit.
DIGITAL
OPT.
2 REC IN PLAY OUT
• When the reset key is pressed, all of the settings in memory
will be erased.
2
CONTENTS/ACCESSORIES/CAUTIONS
Audio cord (2)
(E30-0505-05)
Battery cover (A09-0337-08)
LINE
REC
PLAY
OUT IN
1 REC IN
L L
R R
RESET
RESET
ADJUSTMENT ...........................................................24
PC BOARD ............................................................... 32
SCHEMATIC DIAGRAM ........................................... 37
EXPLODED VIEW .....................................................47
PARTS LIST...............................................................49
SPECIFICATIONS .......................................Back cover
Optical fiber cable (1)
(B19-1529-05)
Batteries (2)
Be especially careful in the following conditions:
• When the unit is brought from a cold place to a warm place
and there is a large temperature difference.
• When a heater starts operating.
• When the unit is brought from an air-conditioned place to
a place of high temperature with high humidity.
• When there is a large difference between the internal
temperature of the unit and the ambient temperature, or in
conditions where condensation occurs easily.