Symptom 2: Powers Off Two Seconds After Turn On - Sony DVP-S300 Training Manual

Digital video player
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Second Generation DVD
The second generation DVD players consist of models DVP-S300, DVP-
S500d, DVP-C600d and DVP-S7700.

Symptom 2: Powers OFF two seconds after turn ON

Cause: There are two causes for this symptom –
1. An internal IC short will load down a power supply voltage. This re-
moves the voltages to the other ICs and communications end. Once
IC communications end, Syscon shuts down the DVD player because
it senses a defect.
2. At power ON the laser must be detected at home position or the unit
will detect a malfunction and shut down. If the sled motor is frozen,
the laser will not return to home.
Repair Procedure:
If the power supply board makes a chirping noise when you press the
power button, an output is being loaded down. Measure the output volt-
ages to find out which one. The most common shorted ICs are:
nd
2
Generation Players - Shorted ICs
Function
Large Gate Array (LGA)
Audio DSP
IC #
Ref # in DVP-S500d
CX8728Q
IC804
CX8730R
IC506
27
If the power supply is OK, the sled may be defective on these older units.
Remove the lid that houses the mechanism and slide the laser away from
home at the spindle motor. At power ON, the laser should travel to the
spindle motor (home) then move outward. If home is not detected, the
laser assembly will incorrectly remain where it is and the unit will shut
down. The sled motor assembly is P/N = X-394-713-71.

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