Gestetner A193 Service Manual page 383

2.6 JAM DETECTION
JAM 1: If the registration sensor does not turn on before the CPU judges that
the original was fed 255 mm since the DF feed motor had turned on,
when the original was fed from the original tray.
JAM 2: If the registration sensor does not turn on before the CPU judges that
the original was fed 190 mm since the DF feed motor had turned on,
when the original was fed from the reverse tray.
JAM 3: If the registration sensor does not turn off before the CPU judges that
the original was fed X1 mm since the registration sensor had turned
on.
Standard sizes : X1 = Original Size x 1.4
Non-standard sizes : X1 = 1765
JAM 4: If the original exit sensor does not turn on before the CPU judges
that the original was fed 140 mm since the registration sensor had
turned on.
JAM 5: If the original exit sensor does not turn off before the CPU judges
that the original was fed X1 mm since the original exit sensor had
turned on.
JAM 6: If the reverse table sensor does not turn on before the CPU judges
that the original was fed 180 mm since the original exit sensor had
turned on.
JAM 7: If the reverse table sensor does not turn off before the CPU judges
that the original was fed X2 mm since the DF feed motor had turned
on again.
X2 = Original Size x 1.4
JAM 8: If the reverse table sensor is off when the DF feed motor turns on
again.
SM
DETAILED DESCRIPTIONS
11-17 (A661)