Read Sharp UP-600 / UP-700 (serv.man19) Service Manual online
2) Output circuit
3) Received circuit
4) Timing chart
Notes
1. Basically, CLS is not output when
a) a card is not inserted right
b) data is not encoded in a card
because CLS signal is generated by head output pulses. But if a
card is slid too fast CLS may be induced in the case of b).
card is slid too fast CLS may be induced in the case of b).
2. CLS signal turns into "H" if a card is stopped on the way.
3. CLS may result if a strong mechanical shock is given to the unit.
4. CLS, RCP and RDD are generated for a short while (for 0.2 sec.
or less) after the passing a card.
7. OTHERS
1)
For diagnostic operations of the UP-E13MR, refer to the Service
Manual of the POS to which it is connected.
Manual of the POS to which it is connected.
2) Service tool
NAME
PARTS CODE
PRICE RANK
MCR test card
BL
+VCC
GND
OUTPUT
RDD
RCP
CLS
RCP
CLS
Figure 2. OUTPUT CIRCUIT
+VCC
4.7K
Ω
10K
Ω
C • MOS 4069 or eq.
Figure 3. RECEIVED CIRCUIT (Recommendation)
Head output
Valid data
Start mark
All "0"
All "0"
End mark
All "0"
16 x FC (Typ) (Track1)
4 x FC (Typ) (Track2)
16 x FC (Typ) (Track3)
4 x FC (Typ) (Track2)
16 x FC (Typ) (Track3)
0.2sec Max.
H
L
L
RCP
H
L
L
RDD
H
L
L
CLS
Card output signals
Indefinite signals
FC : Flux change
TB
(ms)
(ms)
210BPI 75BPI
0.12
V
0.34
V
V(m/s) : Card speed
H
L
L
RCP
TB
24µs (Min)
32µs (Typ)
32µs (Typ)
H
L
L
RDD
"0"
"1"
"1"
"0"
5µs (Min)
8µs (Typ)
8µs (Typ)
TB will vary eith
changes of card speed
and jitter
changes of card speed
and jitter
It is recommended to
use the leading edge
of RCP pulse as the
clock timing
use the leading edge
of RCP pulse as the
clock timing
Figure 4. TIMING CHART
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