Faults With The Selection System (Credit System Is Working) - Wurlitzer One More Time Vinyl Operating Instructions Manual

18.4

Faults with the selection system (Credit system is working)

Symptom
No selections, number of
!
actuated keys not displayed
(credits available)
No selections. After insertion
!
of coins a number appears in
the LH (hundreds) digit, but
selection keys are disabled.
With insertion of further coins
credits are displayed properly.
No response from one (or
!
more) key(s)
The record played is not the
!
one selected. The selection
was properly displayed, and
the 'RECORD PLAYING'
display is the same
The record played is not the
!
one selected. The selection
was properly displayed, and
the 'RECORD PLAYING'
display is showing the actually
playing record
The selected record will not
!
be played. Instead the record
carrier rotates contiuously,
however, it stops if 'BLUE'
plug is pulled at the S&CC
OMT VINYL – edition: 13.08.2007
Faults with the selection system (Credit system is working)
Cause
Open or shorted circuits in the
!
keyboard wiring
Permanent signal from the
!
selection key which number
appears in the dsiplay
Open circuit with this key(s)
!
Improper counting of the
!
record carriers' position
Record carrier does not stop
!
in the correct porsition
Light gate signal Z (counting)
!
or K (carrier position 1) or
both missing
Possible faults
Plug YELLOW displaced or not deep
!
enough inserted
Key RESET permanently closed or
!
shortened to ground (pole 12, brown,
plug YELLOW)
Jammed key, permanently closed key
!
contact
Wire of this key shortened to ground
!
Malfunction of the key contact
!
Broken wire to keyboard
!
Plug YELLOW not correctly seated
!
S&CC defective
!
Wrong adjustment of light control gates
!
(refer to chapter 18.9.3
18.9.4, on page 26)
Interference pulses counted as carrier
!
pulses
Illumination light affecting the Z light
!
gate, reflections at the edges of carrier
base plate
Record carrier latch delayed by
!
mechanical friction
Record carrier latch too wide (latching
!
to late)
Light control gate Z retarded, refer to
!
chapter 18.9.3 and chapter 18.9.4, on
page 26 for proper adjustment
Lamp of light gate defective
!
Broken line in the wire to plug BLACK
!
See notes of chapter 18.9.3
!
chapter 18.9.4, on page 26
and chapter
and
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