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4. Operation Circuit (see the circuit diagram)
(1) Kinds of keys
PSW
:
Print switch
O~9 keys:
Copy count set keys
RP
:
Repeat key
Zdown
:
Reduce mode key
NK
:
Normal mode key
PDSW
:
Preheat mode key
CK
:
Clear key
P key
:
Pause key
AE
: Auto/manual exposure mode select switch
Zup
:
Enlarge mode key
(2) Display unit signals
ZL1 (LD501)
:
Reduce mode (x0.7, x0.64) indication
ZL2 (LD502)
:
Reduce mode (x0.8, x0.7) indication
ZL3 (LD503)
:
Normal mode (x1.0) indication
ZL4 (LD504)
:
Enlarge mode (x1.2) indication
ZL5 (LD505)
: Enlarge mode (x2.0) indication
TFL (LD506)
:
Full waste toner indication
DVL (LD507)
:
DV indication
TPL (LD508)
: Toner empty indication
JPL (LD509)
: Misfeed indication
PEML (LD510)
:
Paper empty indication
PDPL (LD511)
:
Preheat mode indication
REL (LD512)
:
Repeat indication
SL (LD513)
:
Pause indication
AE (LD514)
:
Auto exposure indication
15-§
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