Wurlitzer One More Time Vinyl, Руководство по эксплуатации

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Failures of the illumination, lamps and power system generally
OMT VINYL – edition: 13.08.2007
18
18 Trouble shooting chart
18.1 Failures of the illumination, lamps and power system generally
Symptom Cause Possible faults
!
No light, jukebox not working
at all
!
No power at wall socket
!
Open primary circuit
!
House fuse blown.
!
Mains switch off or defective.
!
Fuse of the jukebox Si1 blown, refer to
chapter 18.2, on page 19
!
Defective power cord or plug
!
Fluorescent tubes do not light,
jukebox working
!
defective circuit, refer to
chapter 18.9.1, on page 25
!
Lamps circuit plug not in light socket at
amplifier
!
Tube not properly seated in holder
!
Defective starter, defective tube
!
One or more of the lights of
the display do not light up,
jukebox working
!
Lamps’ circuit open
!
Bulb defective
!
Defective lamp socket
!
Defective plug BROWN or its wiring
resp.
!
Defect inside the S&CC, e.g. lamp
driver transistor
!
All lights of the display are
dark, jukebox working
!
Supply or common return of
lamps’ circuit open
!
Plug to the digital lights
!
Wire +30v broken (plug BROWN, pole
6, white line)
!
External short in lamps circuit has
tripped T5 (inside S&CC), this disables
IC14 to protect lamp driver transistors
!
Lamps of too high current rating
!
No 30VAC S&CC supply via pole 1,
plug RED, 30v rectifier D7 defective
(this, however, disables the coin
acceptance also)
!
Digital display remains dark,
jukebox working
!
Display signal circuit
interrupted
!
14-pole D.I.L. plug not in place or wrong
way round
!
Digital display shows nonsens
figures
!
Signal lines interchanged
!
14-pole D.I.L. plug to display displaced
not in line with base
!
S&CC defective, e.g. IC23
!
Digital display shows
incomplete figures (missing
segment)
The fault is the same with all
three digits.
!
Signal for one (or more)
segments missing
!
One (or more) of 14-pole plug(s) broken
off
!
One (or more) wire(s) of flat cable
broken
!
Broken connection at display PC-board
!
S&CC defective, e.g. IC23
!
Digital display shows
incomplete figures (missing
segment)
The fault, however, occurs
with one of the three digits
only
!
Segment signal does not
reach this digit
!
Cracked conductor on display PC-board
!
Defective display unit (3 identical one-
digit units)
!
One of the digits of the display
completely off
!
Multiplex signal missing
!
Defective plug to display or broken wire
(A1, A2, A3)
!
S&CC defective (T6, T7, T8)
!
Defective display element