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ME—0276-—16/17
(2)
Bc REE XT 5
PI417B1LKASNSPTR
ERRORFYFORBATRS
Ot,
RRO
b- APS FTMCHESLHMS NSABAUPFOFIBK
Hot,
Fz vr I ROBR
Seo
RR.
@ABS&HS40
1) THRBY
V7 ae Aa—-F
(ALR
AAPTMeER
BEL RW CREW,
Troubleshooting
When
PTR ERROR
lamp abnormally
lights
as mentioned
in
Table
1, and the photocoupler
is suspected
to be the cause,
use
the
following
procedure
to check
and clean
the
erratic
operation
detector.
Obtain
(1) dual
trace
oscilloscope
Do not
tamper
with the
photo
coupler
section,
(a)
BBFe97
—F-FV-FRBRBRECCEMEbSMCHSEC, —H
Bry para—Fit
Prhnt=+7
KF [Ble
FAME LOR
FLCPKAW,
Fz vy 7H
MB
Pig. 13S,
Waveform
Inspection:
Operate
the tape reader
at the
the maximum
speed in either
forward
or reverse
di-
rection.
Observe
the waveforms
which
are
obtained
by synchronizing
signals
from
check
terminals
E and
PS of the
printed
circuit
board
on
the
dual
trace
synchroscope.
Refer
to Fig.
13 below
for the
positions
of check
terminals.
Pret
sv 7 kat
Fig 13. Fry
7 tafe
—
lms /Div
wi
#1.3V
El # x» HBF
BBE)
v1.
y__f#08v
[P-S]
+ x» 7 tH F
(Au + azbhu-—F1g#)
Fig 14. ARERR,
TL -ARA-JTES REA
Fig. 14 BEBRBRB CT.
OL,
Kh:
AFIORH:
SMe,
Zi,
&
2
OHBL CKD ETE [EL ORBOPMOLICHOIET,
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