Description Of Functions; Power Supply; The Transformer Supplies The Following Voltages; The Power Regulation Pcb Contains - Kodak EKTAPRO 4020 Service Manual

Service Manual

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
26 VAC for 36 VDC

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)
- 36 VDC capacitor- stabilized (36 VDC)
- 12 VDC unregulated
- 5 VDC regulated
- 26 VAC
- Zero_cross signal
Details can be obtained from circuit diagrams and the following block diagram.
Connect all the equipment to the same same power line, otherwise phase shifting will bring up problems !
03/98
and +12V DC
regulated and unregulated,
IMPORTANT
3-4
for slot interface
for MOTOR´s, solenoid, fan
for remote control and slot
for logic and MICROCONTROLLER
for accessory slot
for synchronization of the dissolve feature
SM 2547-1
Kodak AG, Stuttgart