No DVD DL PB other discs PB OK, No Disc PB

IC303/pin 17 (1.4Vp-p) which should produce less than 0.5Vdc at IC303/pin 57 if the PLL clock is able to lock to the data. Insufficient IC303/pin 17 input level will prevent a lock and so will a defective IC303.

5.This DVD player uses the laser and focus servos to identify the DVD. One may not be working. From the test mode, manually turn on the laser and focus search servos (Drive Manual Operation/Servo Con- trol) for observation.

·Laser test – using a light meter measure the laser light (never look directly at the laser) and measure voltage across R006 (laser cur- rent). 1Vdc or more across R006 means the laser is at the end of life. The light measurement is quick but not a definitive test. The current measurement is better.

·Focus search test – Scope FE (test connector CN012/pin 3) for 1.5Vp- p minimum sine wave used for disc layer ID. Scope MIRROR output at CN002/pin 16 for 3Vp-p pulses during the search. The Mirror sig- nal is an amplified the PI signal. Both come from RF Amplifier IC001.

IC303/pin 57 if PLL clock is locked (3V= no lock, 0V = defective IC or external short).

6.This DVD player uses the laser and focus servos to identify the CD. One servo may not be working properly. From the test mode, manu- ally turn on the laser and focus search servos (Drive Manual Opera- tion/Servo Control) for observation.

·Laser test – Using a light meter, measure the laser light (never look directly at the laser) and measure the voltage across R006 (laser cur- rent). 1Vdc or more across R006 means the laser is at the end of its life. The light measurement is quick, but is not a definitive test. The current measurement is better.

No DVD DL PB (other discs PB OK)

1.Perform the test mode’s “Drive Auto Adjustments” using a Single, and then a Dual layer disc, to reload data into the EEProm IC201.

2.Check the operation of the tilt circuit in the test mode by seeing if the tilt incline gear moves manually (Test mode/Drive Manual Operation/ Manual Adj/Tilt Position).

3.A single layer DVD Eye pattern’s minimum level is 0.8Vp-p at the MB- 85 board test connector CN012/pin 1. The laser level is affected by dirt/oil in the lens and the tilt circuit. A new laser will output approxi- mately 1.2Vp-p.

No Disc PB

1.Use the test mode to perform the CD auto adjustments.

2.Use the test mode to examine the emergency code entry for failures.

3.Use the test mode to manually PB the CD disc by activating servos 1- 6 individually to see if one is faulty.

4.The minimum (marginal) eye pattern amplitude is .8Vp-p @ CN012/ pin 1. Clean lens or replace laser. Follow eye pattern into ARP2 IC303/pin 19 (1.4Vp-p) which should produce less than 0.6Vdc at