Description of functions 3-4, Power supply 3-4, Important – Kodak Ektapro Slide Projector 4020 User Manual
Page 40: Description of functions
Description of Functions
Power Supply
The PROJECTOR POWER SYSTEM consists of a
•
POWER INPUT ASSEMBLY with POWER ON/OFF SWITCH, PRIMARY FUSE HOLDER
and VOLTAGE SELECTOR
•
TRANSFORMER, SECONDARY FUSE HOLDER
•
POWER REGULATION PCB
The TRANSFORMER supplies the following voltages:
Primary voltage outputs:
92/81 VAC
LAMP voltage for Models 4020 - 9020 and 9020/CINE (SOFTWARE CONTROLLED
LAMP CURVE)
Safety Extra Low Voltage outputs:
10 VAC for +5V DC
and +12V DC
26 VAC for 36 VDC
regulated and unregulated,
The POWER REGULATION PCB contains:
-
line EMI filter
-
rectifiers and regulators
-
Triac LAMP Software Control Circuits (Models 4020 - 9020 and 9020/CINE)
The output voltages and signal are:
-
36 VDC unstabilized (36 VDC_12P)
for slot interface
-
36 VDC capacitor- stabilized (36 VDC)
for MOTOR´s, solenoid, fan
-
12 VDC unregulated
for remote control and slot
-
5 VDC regulated
for logic and MICROCONTROLLER
-
26 VAC
for accessory slot
-
Zero_cross signal
for synchronization of the dissolve feature
Details can be obtained from circuit diagrams and the following block diagram.
IMPORTANT
Connect all the equipment to the same same power line, otherwise phase shifting will bring up problems !
Service Manual
SM 2547-1
03/98
3-4
Kodak AG, Stuttgart