Star Tech Journal

December 1 997
STAR ..... TECH JOURNAL
BOCRilLH
llanufacturlng
CorporatiGn
Ed Glapinski, Quality Control Manager, Rock-Ola Mfg Corp., Torrance, California
OLDER RocK-OLA CD JuKEeox F1xEs
First, I'd like to take this oppor-
tunity to wish you a joyous holi-
day season & a happy new year.
This month's column will cover
a few service and troubleshoot-
ing tips for some of our previous
models. These tips address prob-
lems experienced in our models
Anniversary Legend and below.
ACTION
Check RS0. It will be a 91 Ohm
2 Watt or, in later boards, a 62
Ohm 2 Watt resistor. Pre-amps
with the anti-hiss board tend to
overload this resistor due to ad-
ditional current drawn by the
anti-hiss board.
56180-2A Pru:-
AMP Used in Anniversary Legend
and Below (with the anti-hiss
board)
No SouNn
WITH
swing arm may be energized to
the full out position.
ACTION
Check or replace the cables
which connect the laser and in-
terface board. These are Rock-
Ola part number 56300-A and
56301-A. Over time the connec-
tors in these cables may oxidize,
which will cause intermittent con-
nections.
Fig 2. Location of R50. bad resistor shown.
SouJTION
Replace RS0 with a 62 Ohm 5
Watt resistor.
Fig 1. 56180-2A Pre-Amp PCB w/Anti Hiss.
Fig 3. CDM-3 System
INTERMITTENT PLAY PROBLEMS
AnnmoNAL INFORMATION
ON CDM-3
Albert Douglas of American
Amusements in Bay City, Michi-
gan called to let us know that he
has solved most of his intermit-
tent CD M-3 problems by replac-
ing the cables. It was also re-
ported that a focus coil failed
because of a bad ground in the 5
LAsERJUKEBOXES
SYMPI'OM
SYMPI'OM
No sound, the mute/thermal
overload LED (yellow LED) is
dimly lit or not lit at all when
amplifier is muted.
Intermittent skipping, cutting out,
and play problems on jukeboxes
equipped with CDM-3 lasers.
Also the spindle motor runs
when it should be idle and the