Distinguish The Problem - Panasonic SA-VK91DGCS Service Manual

SA-VK91DGCS / SA-VK91DGCP

13.1. Distinguish the problem

How to distinguish the trouble
1. View mechanical part if visual damage occurred.
Confirm the movement of mechanical parts assembly
(tray ass'y, loading mechanism ass'y, etc.).
13.1.1. Troubleshooting Guide Part 1
Checking Points
AC Inlet Circuit/Voltage 1. Failure to power-up
Selector Circuit the main unit.
2. Power On switch
3.
supply to main unit.
All manuals and user guides at all-guides.com
Possible Faults Possible Reasons
· Wrong selection of AC
power to main unit.
· Voltage selector is faulty.
· AC inlet JK500 is faulty.
· AC Line filter L500 is
faulty.
· Power On switch broken.
Intermittent Power · Check for connection.
2. Diagnose if Optical Pickup Unit is faulty (refer to
diagnosis of Optical Pickup Unit).
3. If mechanism and OPU are OK, it is P.C.B.
Countermeasure
· Replace of fuse if found faulty.
· Replace of voltage selector if found faulty.
· Replace of AC Inlet if found faulty or damaged.
· Replace AC Line filter is found faulty or damaged.
· Replace Power On button switch if necessary.
· If conditions as mentioned above is in good condition.
Check for wire connection. (W1/W2/W3/W4/W6/W7). If
connection is good, please proceed to check for
Transformer Circuit.
· If condition 1 to 4 as mentioned above is in good
condition. Check
(W1/W2/W3/W4/W6/W7). If connection is good, please
proceed to check for Transformer Circuit
18
for wire connection.