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For Europe &
Taiwan R.O.C. model
Ver. 1
SERVICE MANUAL
MODEL DCD-500AE
CD PLAYER
For purposes of improvement, specifications and
design are subject to change without notice.
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
TOKYO, JAPAN
Denon Brand Company, D&M Holdings Inc.
X0303 V.01 DE/CDM 0608
DCD-500AE
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power
cord is less than 460 kohms, the unit is defective.
LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.
CAUTION Please heed the points listed below during servicing and inspection.
Heed the cautions! Inspect for safety after servicing!
Spots requiring particular attention when servicing, such as Check that all screws, parts and wires removed or discon-
the cabinet, parts, chassis, etc., have cautions indicated on nected for servicing have been put back in their original posi-
labels or seals. Be sure to heed these cautions and the cau- tions, inspect that no parts around the area that has been
tions indicated in the handling instructions. serviced have been negatively affected, conduct an insulation
check on the external metal connectors and between the
Caution concerning electric shock! blades of the power plug, and otherwise check that safety is
ensured.
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
(Insulation check procedure)
electric shock. Take care to avoid electric shock, by for ex-
Unplug the power cord from the power outlet, disconnect the
ample using an isolating transformer and gloves when
antenna, plugs, etc., and turn the power switch on. Using a
servicing while the set is energized, unplugging the power
500V insulation resistance tester, check that the insulation re-
cord when replacing parts, etc.
sistance between the terminals of the power plug and the ex-
(2)There are high voltage parts inside. Handle with extra care ternally exposed metal parts (antenna terminal, headphones
when the set is energized. terminal, microphone terminal, input terminal, etc.) is 1M or
greater. If it is less, the set must be inspected and repaired.
Caution concerning disassembly and assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
edges of parts which could cause injury if fingers are moved CAUTION Concerning important safety parts
across them. Use gloves to protect your hands.
Many of the electric and structural parts used in the set have
Only use designated parts! special safety properties. In most cases these properties are
difficult to distinguish by sight, and using replacement parts
The set's parts have specific safety properties (fire resis- with higher ratings (rated power and withstand voltage) does
tance, voltage resistance, etc.). For replacement parts, be not necessarily guarantee that safety performance will be pre-
sure to use parts which have the same properties. In particu- served. Parts with safety properties are indicated as shown
lar, for the important safety parts that are marked ! on wiring below on the wiring diagrams and parts lists is this service
diagrams and parts lists, be sure to use the designated parts. manual. Be sure to replace them with parts with the designat-
ed part number.
Be sure to mount parts and arrange the
wires as they were originally! (1) Schematic diagrams ... Indicated by the ! mark.
For safety reasons, some parts use tape, tubes or other insu- (2) Parts lists ... Indicated by the ! mark.
lating materials, and some parts are mounted away from the
Using parts other than the designated parts
surface of printed circuit boards. Care is also taken with the
could result in electric shock, fires or other
positions of the wires inside and clamps are used to keep
dangerous situations.
wires away from heating and high voltage parts, so be sure to
set everything back as it was originally.
2
DCD-500AE
DISASSEMBLY
(Follow the procedure below in reverse order when reassem-
bling.)
1. Top Cover
(1) Remove 4 screws on both sides.
(2) Remove 5 screws on rear side.
(3) Detach the Top cover as shown in the fig.
Top cover
2. Front Panel
(1) Take off the Chucking plate after removing 2 screws .
Open the CD tray by turning the Drive gear (a) clockwise,
then detach the Loader panel.
(2) Remove 1 screw fixing the Ring wire.
(3) Remove 4 screws on the bottom edge of the Front pan-
el.
(4) Remove 2 screws , at L/R ends of the Front panel.
(5) Detach the Front panel.
Note : Do not yet exclude FFC( mark).
CD tray 3
4 Chucking plate
Ring wire
6
(a)Drive gear
6
5
5
Front panel
Loader panel 5
5
3
DCD-500AE
3. CD Mecha. Unit
(1) Remove 4 screws fixing the CD Mecha..
(2) Unplug Connectors (b),(c) .
Do not yet exclude FFC( mark).
(3) Laser short-circuit in Pick-up of CD Mecha..
(4) Unplug Connector FFC from socket.
(5) Release the FFC from the Clamper.
7
7 7
7
CD Mecha.
FFC
(b) (c)
Clamper
4. Main P.W.B. and Power P.W.B. Main Power
(1) Remove 3 screws ,1 screw of the Rear
panel and detach it.
(2) Remove 2 screws ,3 screws fixing the Main
P.W.B..
(3) Remove 1 screw ,1 screw fixing the Power
transformer with Power P.W.B..
13
15
9
Power transformer 8
with Power P.W.B. 10
11
12
14
Main P.W.B.
Rear panel
4
DCD-500AE
5
DCD-500AE
NOTE FOR HANDLING OF LASER PICK-UP
Description of the Components
+Z-axis direction
+X-axis direction
Object Lens Actuator cover
OP Slide base PAL-2 Flexible board
Label
Slide rack
Z-axis
+Y-axis direction
Y-axis
(Tangental direction)
Flexible flat cable connector
X-axis
(Radial direction)
Label
year
KSS-213C (last figure)
Lot No. day month quality control No.
Lot No.
lop Oct. Nov. and Dec. are expressed by alphabetical letters
of X, Y and Z.
10 1 10-1
lop No.
quality control LD drive current
The expressed unit is by mA, with omission of the
decimal point as for example, 56.5mA will be ex-
pressed as 565, but the head of English letter means
the control in the manufacturning plant.
Pin Connector
KSS-213C Pin No. Description IN/OUT Pin No. Description IN/OUT
LD
1 PD IC Vc IN 9 PDIC GND IN
2 Vcc IN 10 LD LD IN
3 E OUT 11 VR IN
4 D OUT 12 PD OUT
5 A OUT 13 FCS (+) IN
6 B OUT 14 TRK (+) IN
7 C OUT 15 TRK (- ) IN
1 3 5 7 9 11 13 15 8 F OUT 16 FCS (- ) IN
2 4 6 8 10 12 14 16
SHORT LAND
Flexible flat cable connector
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
TRACKING
FOCUSING
+2.5V +5V
PDIC LD
CAUTION: The soldered connecting portion must be bridged when removing CN54.
6
DCD-500AE
No.
KSS-213C Lot No.
10 11 12 X Y Z
10 1
0 2
No. No.
KSS-213C LD
PD IC Vc IN PDIC GND IN
Vcc IN LD LD IN
E OUT VR IN
D OUT PD OUT
A OUT FCS (+) IN
B OUT TRK (+) IN
C OUT TRK (-) IN
F OUT FCS (-) IN
1 3 5 7 9 11 13 15
2 4 6 8 10 12 14 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
+2.5V +5V
PDIC LD
CN54 (16P FFC )
7
DCD-500AE
Caution for Handling the Laser Pick-up
4. Metal Bearing
The laser pick-up KSS-213C is assembled and precisely
As the metal bearing of Cu-compound sintered alloy is
adjusted using a sophisticated manufacturing process in our
impregnated with FROIL946P, never fail to supply the
plant. Do not disassemble or attempt to readjust it. Please
bushing with the same lubricant at the time of replacing the
observe the following instructions carefully in handling the
pick-up.
pick-up.
5. Handling
1. Handle with Care Please handle the laser pick-up with holding the slide base.
(1) Storage (resin molded part).
Do not store the pick-up in dusty, 0 or When either a part of human body or some other things may
high-humidity environments. happen to touch directly with the circuit part of P.W.Board, it
(2) Please take care for preventing from shock by falling may cause deterioration, take careful attention in handling
down or careless handling. this base.
2. Laser Diode (LD) 6. Deterioration
(1) Protect your eyes As KSS-213C comprises built-in RF Amp and APC circuit,
The laser beam may damage the human eye, since the resists stronger against external electrostatic damages than
intensity of the focused spot may reach 7x 10 3 the former typed pickup. However, there is possibility of
W/cm2 even if the intensity at the objective lens is 400