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For U.S.A., Canada, Europe
& Japan model

Ver. 4
SERVICE MANUAL Please refer to the
MODIFICATION NOTICE.

MODEL DVD-5900
DVD-A11
DVD AUDIO-VIDEO / SUPER AUDIO 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.

X0176 V.04 DE/CDM 0707
DVD-5900/DVD-A11

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
DVD-5900/DVD-A11 3

WIRE ARRANGEMENT
If wire bundles are untied or moved to perform adjustment
or parts replacement etc.,be sure to rearrange them neatly
as they were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noise
generation.
Wire arrangement viewed from the top

3
DVD-5900/DVD-A11 4

DISASSEMBLY
(Follow the procedure below in reverse order when reas-
sembling.)

Top Cover
Remove 8 screws on the top and both sides ,
and 3 screws on the rear .
Widen the Top Cover a little laterally , then
detach it with sliding in the arrow direction .
Caution : E3( North America ) have earth
bracket on the both center . TOP COVER

Caution

Front Panel & Loader Panel
. . When the Disc Tray can be ejected electrically .
Switch on , and press "OPEN/CLOSE" button to
open the Disc Tray .
Detach the Loader Panel by lifting int the
arrow direction .
Cloese the Disc Tray .
Disconnect the wire [CY025][CX035][CX172]
connecting from the Front Panel .
Demove 4 top screws and 4 bottom screws , then
detach the Front Panel to the arrow dirrection ,
. . When the Disc Tray cannot be ejected electrically
Insert a ruler into the left hole of DVD Mecha
and push the Plate Gear of the DVD Mecha , to
open the Disc Tray .
The same steps described on . . .

4
DVD-5900/DVD-A11 5

Dvd Mecha Unit
Remove 4 screws on the top side ,
Disconnect [CY101][CY171][CY251][CY301][CX331] ,
from the MAIN P.W.B. .
Take it off in the arrow direction .
10P PH 17P FFC
33P FFC

3T LUG(2)
25P FFC

DVD Mecha Unit 30P FFC

D.POWER P.W.B. & A.POWER P.W.B.
. . D.POWER P.W.B.
Remove 4 screws on the top and 3 ( or 2 )
screws on the side ,
Disconnect [CX024][CX026][CX036][CX042][CX081] ,
from the D.POWER P.W.B. and take off it upside .
. . A.POWER P.W.B.
Remove 4 screws on the top side .
Disconnect [CY032][CX034][CX062] from A.POWER
P.W.B. and [CX031] from VIDEO P.W.B. and take off it .
3P EH
6P VH A. POWER P.W.B.
4P PH
3P VH
D. POWER P.W.B.

3P VH 3T LUG(1)
8P PH
4P PH
3P EH
4P PH
3P VH

5
DVD-5900/DVD-A11 6

Video P.W.B. & Scart P.W.B.
. . Video P.W.B.
Remove 10 ( Japan : 11 ) screws on the rear and
1 screw on the side and 2 screws on the top .
. . Scart P.W.B.
Remove 4 screws on the rear side ,
Disconect [CX031][XX052][CY102] from Scart P.W.B. .
Joint P.W.B.

DVI P.W.B. 10P PH
Video P.W.B. Scart P.W.B. (E2 only)
10P PH
5P PH

3P PH

5P/3P PH

IEEE1394 Unit & Audio P.W.B.
. . IEEE1394 Unit
Remove 2 screws on the rear and 1 screw on
the top .
Disconect [CY191][CY173] from the IEEE1394 Unit .
. . Audio P.W.B.
Remove 7 screws on the rear and 4 screws on
the top .
19P FFC
17P FFC

IEEE1394 Unit

Audio P.W.B.

6
DVD-5900/DVD-A11 7

Power Trans & Rear Panel
. . Power Trans
Remove 2 ( Japan : 4 ) screws on the top .
. . Rear Panel
Remove 2 screws on the top and 3 screws on
the rear .
AC Inlet
Power Trans (Japan)
Power Trans(Export)
YEL
Primary Rear Panel
Secondary
WHT
Primary
45 5
35 5 Secondary

Parts on Front Panel
. . Display P.W.B.
Remove 11 screws on the top .
. . Led P.W.B.
Remove 2 screws on the top .
. . Encoder P.W.B.
Remove 2 screws on the top .
. . P.SW P.W.B.
Remove 2 screws on the top .

Encoder P.W.B.

Display P.W.B.
17P FFC
P.SW P.W.B.

5P PH

(a)
Led P.W.B.

7
DVD-5900/DVD-A11 8

Iop Measurement (Judging for Traverse Unit Replacement) Iop
As to deciding whether optical pickup is defect or not (for replacing traverse unit), follow the steps below.
1. Judging Step
(1) Disc play abnormal 1.
Problems such as disc no read, unsteady playback, etc. (1)
(2) Laser drive current (Iop) check
Check Iop according to the measuring method described in step 2 below.
If the checked value is 1.5 times or more than the initial Iop indicated (2) Iop
on the rear of mechanism unit, the traverse unit should be replaced. 2 Iop
1.5
(3) Replacing traverse unit
Referring to "How to Replace Traverse Unit", replace the traverse unit.
No mechanism adjustment is required as the whole unit is replaced with (3)
a new one.
DVD mA
CD mA DVD mA
CD mA
Laser current initial value on the rear of mechanism
Laser current initial value on the rear of mechanism
2. Iop Measuring Method
DVD laser drive current measuring points 2. Iop
[DVD] Iop silk point

DVD laser drive current measuring points
[DVD] Iop silk point

CD laser drive current measuring points
GU-3512 P.W.B. (foil side)
[CD] Iop silk point
(1) DVD laser drive current measurement CD laser drive current measuring points
GU-3512 P.W.B. (foil side)