Before Repair And Adjustment; Protection Circuitry - Panasonic SA-VK61DEE Service Manual

14 Self-Diagnosis Function
14.1. Automatic Displayed Error Codes
14.2. Memorized Error Codes
14.3. Mode Table 1
14.4. DVD/CD Self-Diagnosis Error Code Description
14.5. Error Codes Stored During No Play
14.6. Mode Table 2
14.7. Tray Lock Function
14.8. Things to Do After Repair
15 Cautions To Be Taken During Servicing
15.1. Recovery after the dvd player is repaired
15.2. DVD Player Firmware Version Upgrade Process
15.3. Firmware Version Upgrade Process by Using Disc and
Recovery Process
15.4. Using Recovery Disc
15.5. Total Usage Time Display
16 Disassembly and Assembly of Main Component
16.1. Disassembly flow chart
16.2. Disassembly of Top Cabinet
16.3. Disassembly of DVD Module (2) P.C.B.
16.4. Disassembly for the Top Ornament Unit
16.5. Disassembly for DVD changer unit
16.6. Disassembly for Panel P.C.B., LED P.C.B. & Tact Switch
P.C.B.
16.7. Disassembly of Main P.C.B., Power P.C.B. & Transformer
P.C.B.
16.8. DVD Changer Unit Main Component Replacement
Procedures
16.9. Disassembly of Deck Mechanism Unit
16.10. Replacement for the cassette lid ass 馳
16.11. Counter-measure for tape trouble
17 Measurements and Adjustments
17.1. Cassette Deck Section
17.2. Tuner Section
17.3. Alignment Points
18 Block Diagram
19 Schematic Diagram
19.1. (A) DVD Module (1) Circuit
19.2. (B) DVD Module (2) Circuit
19.3. (C) Main Circuit & (D) Tuner Extent Circuit

1 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C531~C534, C588~C589, C598~C599 and C954 through a 10Ω, 5W
resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230~240 V, 50 Hz in NO SIGNAL should be ~770mA (at volume min, in CD mode).

2 Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
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19.4. (E) Panel Circuit, (F) LED Circuit & (G) Tact Switch Circuit
19.5. (H) Tuner Circuit
19.6. (J) Deck Circuit & (K) Deck Mechanism Circuit
19.7. (L) Power Supply Circuit
19.8. (M) Power Circuit
19.9. (N) Transformer Circuit, (O) AC Inlet Circuit, (Q) CD
Loading Circuit, (R) CD Detect Circuit & (S) Spindle
Position Circuit
20 Printed Circuit Board
20.1. (A) DVD Module (1) P.C.B. (Component & Foil Side)
20.2. (B) DVD Module (2) P.C.B. (Side A & B)
20.3. (C) Main P.C.B.
20.4. (D) Tuner Extent P.C.B., (F) LED P.C.B. & (G) Tact P.C.B.
20.5. (E) Panel P.C.B.
20.6. (H) Tuner P.C.B.
20.7. (J) Deck P.C.B. & (K) Deck Mechanism P.C.B.
20.8. (L) Power Supply P.C.B.
20.9. (M) Power P.C.B.
20.10. (N) Transformer P.C.B.
20.11. (O) AC Inlet P.C.B.
20.12. (Q) CD Loading P.C.B., (R) CD Detect P.C.B. & (S)
Spindle Position P.C.B.
21 Wiring Connection Diagram
22 Illustration of ICs, Transistors and Diodes
23 Terminal Function of IC
23.1. IC600 (C2BBHF000077
24 Parts Location and Replacement Parts List
24.1. Deck Mechanism (RAA3412-S)
24.2. CD Loading Mechanism (RD-DAC036-S)
24.3. Cabinet
24.4. Electrical Parts List
24.5. Packing Materials & Accessories Parts List
24.6. Packaging
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) System Microprocessor
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