Troubleshooting; General Problems And Troubleshooting Guide - Sony DVP S530D Training Manual

When the model DVP-S530 DVD player is first plugged in and turned on, several things occur before "NO DISC" is displayed on the front panel. One
operation is performed after the next until it reaches the end of the chain. A failure will prevent it from reaching the end and often a side trip is taken to
protect the unit by shutting down. Finding out where in the chain the unit has stopped will help locate the failure. Below is a general description of the
start-up operations followed by problems and answers. Use the information below as a troubleshooting guide to remain on track throughout your
testing.
1. DVD Player is plugged in and the power button is pressed.
2. Communications between Interface IC201 and Syscon IC202 on
the serial bus.
3. Front panel blue Digital Dolby indicator lights.
4. Communications with other ICs on the parallel bus.
5. SONY DVD appears on the fluorescent display.
6. Sensors are checked and the Transport is returned to the initial
state (tray is closed, sled goes to home position).
7. Sony DVD logo appears on the monitor (OSD).
8. Search for a disc is initiated using the focus search operation and
other servos
9. NO DISC is displayed in the fluorescent display.

GENERAL PROBLEMS AND TROUBLESHOOTING GUIDE

No Power ON
1. Unplug unit and press the POWER button to discharge the power
supply.
2. Watch the front panel Dolby Digital indicator while plugging the unit
into AC. If there is Interface IC201 to Syscon IC202 serial communi-
cations, the blue indicator will light momentarily. See the Power Con-
trol section for details.
To check the Interface IC201 alone (without IC202), use the proce-
dure in the test mode section of this book (last paragraphs).

Troubleshooting

Operations
85
Power Control section of the training book
Power Control section
Power Control section
Parallel Data Communications section
Power Control section
Mechanism section
See no logo problem listed below.
Use the Test Mode section in the service manual to
test the Laser, Focus, Spindle and Tracking servos.
Then see the problem servo section.
Serial Data Communications / Power Control section
3. Press the power ON button. If the unit does not remain ON, there is a
loss of communication between Syscon IC202 and a slave IC or the
servo IC701 failed to reset the mechanism.
Communications occur when Syscon IC202 Chip Selects several ICs,
sends data and waits for an interrupt reply from each. Use the scope
to look for a low interrupt reply pulse at these ICs highlighted (in bold)
while repeatedly pressing the power button to reinitiate the sequence:
Details found in: