Wurlitzer One More Time Vinyl, Руководство по эксплуатации

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Faults with the selection system (Credit system is working)
OMT VINYL – edition: 13.08.2007
21
18.4 Faults with the selection system (Credit system is working)
Symptom Cause Possible faults
!
No selections, number of
actuated keys not displayed
(credits available)
!
Open or shorted circuits in the
keyboard wiring
!
Plug YELLOW displaced or not deep
enough inserted
!
Key RESET permanently closed or
shortened to ground (pole 12, brown,
plug YELLOW)
!
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.
!
Permanent signal from the
selection key which number
appears in the dsiplay
!
Jammed key, permanently closed key
contact
!
Wire of this key shortened to ground
!
No response from one (or
more) key(s)
!
Open circuit with this key(s)
!
Malfunction of the key contact
!
Broken wire to keyboard
!
Plug YELLOW not correctly seated
!
S&CC defective
!
The record played is not the
one selected. The selection
was properly displayed, and
the ’RECORD PLAYING’
display is the same
!
Improper counting of the
record carriers’ position
!
Wrong adjustment of light control gates
(refer to
chapter 18.9.3 and chapter
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
!
The record played is not the
one selected. The selection
was properly displayed, and
the ’RECORD PLAYING’
display is showing the actually
playing record
!
Record carrier does not stop
in the correct porsition
!
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
!
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
!
Light gate signal Z (counting)
or K (carrier position 1) or
both missing
!
Lamp of light gate defective
!
Broken line in the wire to plug BLACK
!
See notes of chapter 18.9.3 and
chapter 18.9.4, on page 26