This manual is intended for Jamo retailers and their appointed service representatives. Jamo assume that basic service procedures inherent to
the industry, and specifi cally Jamo products, are already known and understood by the users and will for that reason not be restated here.
WARNINGFailure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components and equipment or/and shortening the product life or/and failure of the product
to perform as specifi ed. For these reasons Jamo strongly advice product owners that all service required should be
performed by an authorized Jamo retailer or the appointed service representative.
WARNINGStatic discharge can destroy expensive components, equipment or/and shorten the product life. Discharge any static
electricity accumulated in your body or materials in the vicinity of the workplace by grounding.
IMPORTANTThis manual does not in its self constitute authorization, certifi cation or establish a principle agent or partner
relationship of any form.
IMPORTANTJamo continually strive to improve their products and as a consequence of these modifi cations are inevitable. Specifi cations
are subject to change without notice or obligation to retrofi t. Should any discrepancy appear in this manual, please
contact Jamo Call center.
IMPORTANT
Disconnect all mains power before disassembly or part replacement. Recheck all work before reapplying mains power to the unit.
Contents
To service personnel .......... 2 - 4 Faultfi nding .................... 9 Remote control ................................ 56
If possible, use the original packing material for any shipping. Otherwise, repack the product
using:
• A reinforced cardboard box, strong enough to carry the weight of the product.
• At least 6 cm / 2.36 inches of shock-absorbing material around the product.
• Nonabrasive dust-free material for the other parts.
• Nonabrasive wrapping for the product. (Dust and dirt cover)
• Repack the product in a manner to ensure that it cannot shift in the box during transport.
Never ship products, like speakers and subwoofers, with spikes mounded. Spikes can penetrate
the cardboard and other packing material causing serious damage.
Never pack accessories, mains cord etc. in a way that it could damage the product.
The Jamo warranty does not cover damage during shipment. The product warranty is described
in the user’s manual and on the Jamo homepage.
Receiving products
When products are received, the following procedure should be followed:
1. Inspect the outer box for damage.
2. Carefully unpack all items from the box and check for damage.
3. Check that nothing is missing according to the delivery note.
4. If you note any physical damage not stated in the fault description or missing items,
contact the sender immediately and clarify the matter.
Damage during transport is not covered by the Jamo warranty.
How to order spare parts
When ordering spare parts, we would like you to state both the Part description and Item no.
This is to avoid times consuming misunderstandings and extra shipments.
DVR 50 Serial No.:
On all DVR 50 units you will fi nd a Serial number on the rear panel. Fig. 44-0401/8
The number is made up of tree sections. The fi st section is the factory code (two digits). The
XX
next section is the revision number (two digits). The rest of the serial number is a running serial
number starting with 3001001100.
DVR 50 models:
Item No. Rear labelTuner modelRegion codePower cable Video cable TV SystemCountries
On the front page, in bottom right hand corner, you will fi nd the manual revision number. The
number is basically the release date followed by a product status number. (day month year status No.)
The following list shows the products status No.:
• 1 is for products still in production.
• 2 is for discontinued products for which spare parts are still available.
• 3 is for discontinued products for which spare parts are no longer available.
Please note! The latest service manuals are available for download on the Jamo homepage.
DVR 50 - Rev. 011105-2
4
Specifi cations
System .....................................................................................................................................................................DVD-Receiver
PowerConsumption ................................................................................................................................................. Max 120W
RatedOutput6Ohm1Khz10 ......................................................................................................................... 2 x 50/50/2 x 50
RatedOutput6Ohm1Khz1 ........................................................................................................................... 2 x 35/35/2 x 35
VideoInputs ................................................................................................................................................................................ No
PowerConsumption ................................................................................................................................................. Max 120W
The following guide is base on service reports sent in by service partner’s world wide. Try the suggested corrections in
the same order as they are listed.
Before replacing modules and components always make sure that product in front of you has the latest Firmware
version. The Firmware version can be checked in the hidden menu. To access the hidden menu:
Press LOAD to open the loader tray
Press INFO followed by 2,7,6 and you have now accessed the hidden menu.
Press MENU to close the hidden menu again.
The latest Firmware (instructions included) can be downloaded from the Jamo website under download.
SymptomPossible causeCorrection
The unit will not power up.• Bad internal cable connections.• Burned FUSE
The unit will not BOOT.• Faulty or incorrectly burned Firmware CD.•
No light in the display.• Bad internal cable connections.• Defective
The LOADER tray will not open.• Bad internal cable connections.• Defective
“Noisy” LOADER• Out of balance- or off centred discs.• Loos
• Bad internal cable connections.• Defective
MPEG module.
• No batteries are inserted in the remote
control.• The batteries are worn out.• Bad
internal cable connections.• Defective VFD
module.• Defective MPEG module.
• Power supply fl uctuations or other
abnormalities such as static electricity may
interrupt correct operation.• The DVR 50
operation may have been interrupted by a non
standard disc.
• Operations may not be permitted by the disc. • Read the instructions on the disc.
• Secure all cable connections.*(1)• Replace
FUSE and check unit.*(2)• Replace the PSU
module.
• Open the loader tray*(3) and try with a new
CD.• Secure all cable connections.• Replace the
MPEG module.• Replace the LOADER module.
• Secure all cable connections.• Replace the
VFD module.• Replace the PSU module.•
Replace the MPEG module.
• Secure all cable connections.• Replace the
Audio module.• Replace the MPEG module.•
Replace the VFD module.• Replace the LOADER
module.
• Discard the bad discs.• Tighten the LOADER
bracket. (see instruction under LOADER
module)• Some copy protection systems will
disrupt the playing of music. Check with other
discs.• Discard the bad discs.• Replace the
LOADER module.
• Some copy protection systems will disrupt
the playing of music. Check with other discs.•
Secure all cable connections.• Replace the
Audio module.• Replace the PSU module.
• Secure all cable connections.• Replace the
Audio module.• Replace the MPEG module.
• Secure all cable connections.• Replace the
MPEG module.
• Insert new batteries.(2 x “AAA” R6P)• Replace
with new batteries.(2 x “AAA” R6P)• Secure all
cable connections.• Replace the VFD module.•
Replace the MPEG module.
• In order to completely reset the DVR 50,
unplug the power cable from the AC outlet.
Wait at least 30 seconds to allow all capacitors
to fully discharge. (personal settings will not
be affected)
*(1) Especially REV. 01 units are prone to bad internal cable connections do to cable length and ferrite blocks.
*(2) The PSU module FUSE is located under the heat sink. Warning! Do not replace the FUSE unless the mains cord has
been removed! High voltage Warning! Do not touch the heat sink during operation!
*(3) The loader module can be opened by pressing the STANDBY button simultaneously with powering up the unit.
(Reconnecting the power cable)
DVR 50 - Rev. 011105-2
9
DVR 50 Audio board
DVR 50 Electronic moduls
Ref. No.Item No.
1
74101PCB assy Audioboard DVR-50
Replacing the DVR 50 Audio board
• Disconnect the power cord from the AC outlet and take all necessary ESD
precaution.
• Remove the Lid. (See instruction under Lid)
• Disconnect all cables going to and from the Audio board.
• Unscrew the 4 screws holding the Audio board. See picture 44-0400/3
• Replace the board with a new Audio board. Note 1
• Reconnect the cables. Note 2
• Test the DVR 50 unit.
Important notes!
Note 1:
If washers is present. Be careful not to loose any of the isolation washers when
removing the board. There must be two plastic washers between the Audio
board and the PSU heat sink. See picture 44-0400/2. after Rev. 4 boards dos not
have washers.
Part description
PCS.
1
Fig. 44-0400/3
Fig. 44-0400/2
Remarks
Rev. ≥ 4
Note 2:
Early models (approximately 30 units) got a sliced up Audio - MPEG cable. Special
care should be taken when refi tting it after service. The sliced cables are only
seen on board Rev. 2 boards. See picture 44-0401/4