Dvr 50 Faultfinding - JAMO DVR 50 Service Manual

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.
Symptom
The unit will not power up.
The unit will not BOOT.
No light in the display.
The LOADER tray will not open.
"Noisy" LOADER
Audio faults.Front speakers (Left/Right)Center
speaker.SUR speakers (Left/Right)
Audio faults.No Radio.No TV/Video/Aux.No I/O
digital/optical
Faults on TV signals or the 12V controls.
(Missing voltage)
The DVR 50 unit does not respond to
commands from the remote control.
The DVR 50 does not respond to any
commands.
The DVR 50 does not respond to some
operating commands during playback.
*(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)
Possible cause
• Bad internal cable connections.• Burned FUSE
on the PSU module.• Defective PSU module.
• Faulty or incorrectly burned Firmware CD.•
Bad internal cable connections.• Defective
MPEG module.• Defective LOADER module.
• Bad internal cable connections.• Defective
VFD module.• Defective PSU module.•
Defective MPEG module.
• Bad internal cable connections.• Defective
Audio module.• Defective MPEG module.•
Defective VFD module.• Defective LOADER
module.
• Out of balance- or off centred discs.• Loos
LOADER brackets.• Copy protection.• Poor
quality or poorly recorded media.• Defective
LOADER module.
• Copy protection.• Bad internal cable
connections.• Defective Audio module.•
Defective PSU module.
• Bad internal cable connections.• Defective
Audio module.• Defective MPEG module.
• 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.
DVR 50 Faultfi nding
Correction
• 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)
• Read the instructions on the disc.
DVR 50 - Rev. 011105-2
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