Trouble Shooting - Sony CDJ-500 Service Manual

5-2. TROUBLE SHOOTING

This section describes trouble shooting methods.
Section 4-2-2. shows the flowchart of the processing routine of the
unit. Section 4-2-3. describes the ATP procedures. These sections
define the detective parts under operating conditions.
5-2-1. BEFORE TROUBLE SHOOTING
The following procedures are recommended to verify if the drive is
really faulty or not:
a. Poor connection with the host system
(esp. GND-related connection, frame GND, etc.)
b. Incorrect operational procedure.
5-2-2. FLOWCHART FOR TROUBLE SHOOTING
START
ATP
(Refer to section 5-2-3.)
Pass
END
40
c. Program error of host system
d. The SCSI TERM of DIP SW on the rear of set is not set to ON.
e. Wrong Drive Number selection
f. Wrong supply voltage
g. Environmental conditions (where electrical noise easily jumps
into signal)
h. Influence of strong magnetic field.
Fail
Optical Pick-up Cleaning
Perform drive
function check
(Refer to section 5-2-4.)
Fail
Part Replacement
Pass