Panasonic AG-520VDH Service Manual

Also see for AG520VDH - COMB. DVD/VCR/TV: Operating instructions

Contents

Panasonic AG-520VDH Service Manual Manual pdf 37 page image

8 SCHEMATIC DIAGRAMS8.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES1. Important safety noticeComponents identified by the sign have specialcharacteristics important for safety. When replacing anyof these components, use only the specified parts.2. Do not use the part numbers shown on these drawings forordering.The correct part number and part value is shown in theparts list, and may be slightly different or amended sincethis drawing was prepared.3. Use only original replacement parts:To maintain original function and reliability of repairedunits, use only original replacement parts which are listedwith their part numbers in the parts list section of theservice manual.4. Parts different in shape or size may be used.However, only interchangeable parts will be supplied asservice replacement parts.5. Test point information:Test point with a jumper wire across a hole in P.C.B.:Test point with a component lead on the foil side.:Test point with no test pin.:Test point with a test pin.Schematic Diagram Notes1. Indication for Zener Voltage of Zener DiodesThe Zener Voltages of Zener Diodes are indicated assuch on Schematic Diagrams.Example:(6.2V)......Zener Voltage2. How to identify ConnectorsEach connector is labeled with a Connector No. and PinNo. Indicating what it is connected to (its counterpart).Use the interconnection schematic diagram to find theconnection between associated connectors.Example:The connections between two C.B.A.s are shown below.POWER SUPPLYC.B.A. MAIN C.B.A.The Number of pins of the Connector.Connector No.on Main C.B.A.P1503 P3004(10 Pins)Ref. No. of the connection parts, such as lead cable orflexible cable, which are supplied as replacement parts.2443. Parts marked "PT" are not used in any models includedin this service model.Example:100PPTC6011 R6097PTPTC60114. Jumper wires are used for WA10, WA5 etc and these arenot supplied as replacement parts.Signal Waveform NoteHow to read Signal WaveformVoltage Chart NoteVoltage Measurementa. Color bar signal in SP mode.b. ---:Unmeasurable or not necessary to measure.Circuit Board Layout NoteCircuit Board Layouts show components installed forvarious models.For proper parts content for the model you are servicing,please refer to the schematic diagram and parts list.NOTE:Circuit Board Layouts include components which are not used.91 2 3 4 5 6 7WF1 8+250mVp-pV1CH1 TP30020.1V 5ms 2REC SP/LP/SLPCH2 TP62055V1 Connecting Point2 Volts/Div3 Volts/Div4 Connecting Point5 Time/Div6 Trigger Channel ofthe scope(1:CH1,2:CH2)7 Operation Mode ofVCR8 Waveform Point onSchematic9 V1:Peak to PeakSCHEMATIC DIAGRAM & CIRCUIT BOAD LAYOUT NOTESAG-520VDHAG-520VDH37