Service Manual

SM 2547-1

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 !

03/98

3-4

Kodak AG, Stuttgart

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Kodak 7020, 5020, 4020, (9020/CINE) Description of Functions, Power Supply, Transformer supplies the following voltages

(9020/CINE), 5020, 9020, 7020, 4020 specifications

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