Operating instructions

3-32 (E)

DFP-R3000

3-6. FG checking

Perform the FG checking when sprocket SUB assembly,

sprocket holder and brake are replaced.

Required Equipment and Tools

DFP-D3000

Projector

Oscilloscope

Connection cable (Supplied with DFP-R3000)

Alignment film (with data sheet)

Preparation

Remove the front panel assembly and left side panel and

then connect the DFP-R3000 and DFP-D3000 READER

connector using connection cable.

Procedure

(1) Connect the oscilloscope to the following points on the

RD-35 board.

Oscilloscope → RD-35 board

CH1 → TP4 (FG)

(2) Load the alignment film into the DFP-R3000 and

projector, and then run the film.

(3) Check that the output (FG waveform) of oscilloscope

meets the following specification.

Specification : Duty ratio

= 50 ±10 %

—

(4) Change the measuring range of the oscilloscope as

shown below, and check that the FG waveform of the

oscilloscope is not chipped.

(5) If the duty ratio does not meet the specification,

perform the installation of the replaced part again.

3-6. FG checking