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For U.S.A., Canada, Europe, U.K.,
Asia, China, Taiwan R.O.C., Korea
& Japan model 2

Ver. 2
SERVICE MANUAL Please refer to the
MODIFICATION NOTICE.

MODEL DN-S3500
TABLE TOP SINGLE 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.

X0252V.02 DE/CDM 0511
DN-S3500

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
DN-S3500

DISASSEMBLY
(Follow the procedure below in reverse order when reassembling.)
Note: First of all, remove the Platter. Refer to the Instruction Manuals.

1. Bottom Plate
(1) Remove 4 screws 70 and pull out Bottom Plate.

70

Bottom Plate

70

2. Top Cover unit
(1) Remove 4 screws 71.
(2) Detach FFC ESC.
(3) Remove 2 Push Rivets 31.
(4) Disconnect Connector to remove Eject LED unit.
(5) Remove 6 screws 71.
(6) Disconnect FFC Cable and Connector.
(7) Detach Top Cover unit.

71
Front ESC

71
Connector
CW121
71 71

Connector
CX032

31
71 FFC Cable
CX251
Eject LED unit

Note:
Do not pull out aslant to prevent FFC cable damage.
Do not fail to pull AC cord from wall outlet before disconnect FFC Cable.
If AC cord is remained plugged into wall outlet, power is kept supplied in the unit, which may cause danger.

3
DN-S3500

3. Motor unit
(1) Remove 4 screws 74.
(2) Detach Motor unit (FG3500).

Motor unit
74 (FG3500)

74

4. Mecha unit
(1) Remove 2 screws 63 and 2 screws 64.
(2) Disconnect FFC cable and Connector.
(3) Detach Mecha Unit.

Connector
CX061
64

63

63

FFC Cable
CX361
Mecha unit

Note:
Do not pull out aslant to prevent FFC cable damage.
Do not fail to pull AC cord from wall outlet before disconnect FFC cable.
If AC cord is remained plugged into wall outlet, power is kept supplied in the unit, which may cause danger.

4
DN-S3500

5. Power P.W.B.
(1) Remove 6 screws 69, a screws 72 and a screws 73.
(2) Detach Power P.W.B.

Power P.W.B.
69
73

72

69 69

69

6. Main P.W.B.
(1) Short-circuit the short land above.
(2) Remove a screws 65 and a screws 66.
(3) Disconnect FFC Cable and FPC Cable.
(4) Detach Main P.W.B.

65

Main P.W.B. FPC Cable

66

Short land for laser diode

FFC Cable

Note:
Do not pull out aslant to prevent FFC cable damage.

5
DN-S3500

7. Shield Plate (E3 Model only)
(1) Remove 4 screws 60.
(2) Detach Shield Plate.

Shield Plate

60
60

8. CD Mecha
(1) Remove 2 screws 63 and pull out Main Pwb Bracket.
(2) Remove 2 screws 64 and pull out Disc Guide.

Main Pwb Bracket
63
63
CD Mecha

Disc Guide

64

64

6
DN-S3500

BLOCK DIAGRAM

7
DN-S3500

CONFIRMING THE SERVO
What is Service Program
Service program is a special program intended for confirming servo functions etc.
Required Measuring Implement
Reference disc (TCD784 or CO-74176)
1. Contents of Service Program
Turn on the power while pressing both B button and the PARAMETER knob to set the service mode of DN-S3500. The various
check items can be selected with the PARAMETER knob, the various test items can be selected with the A, SAMP, EXIT/RELOOP,
(SAMP.)EXIT/RELOOP, and BEND buttons. Press either the PARAMETER knob or PLAY/PAUSE button to start the check
or test and display the result.
To eject the disc, press the DISC EJECT button.
To cancel the service mode, turn the power off.

Process No. Function
(TRACK Contents
(Character-display)
Indication)
A PARAMETER knob is pushed and a version is checked.