Ld Safety Switches (B129/B130/B168/B169) - Gestetner B130 Service Manual

LD SAFETY SWITCHES (B129/B130/B168/B169)

6.13 LD SAFETY SWITCHES (B129/B130/B168/B169)
+5VE
+24V
PSU
GND
Safety switches are installed at the front and right doors to ensure technician and
user safety, and to prevent the laser beam from accidentally switching on during
servicing. Opening of the front or right door opens the corresponding switch, cutting
the power supply (+5VS) to the laser diode.
The safety switches are installed on the +24V line coming from the power supply
unit (PSU). The +24V supply must pass through these switches before converting
into the +5VS power that drives the laser. This is why this voltage is referred to as a
"switched" voltage.
B129 Series/B044 Series
CÓPIA NÃO CONTROLADA
BICU
+5VS
REG
Front/Right Door
Switches
6-30
CÓPIA NÃO CONTROLADA
+5VS
LD
LD
PD
Vcc
M61880FP
LD Drive Board
B130D901.WMF
PD
SM