Panasonic SA-AK640PL Service Manual

Contents

Panasonic SA-AK640PL Service Manual Manual pdf 57 page image

(All schematic diagrams may be modified at any time with thedevelopment of the new technology)17.1. Notes of Schematic DiagramsS951 : MODE SwitchS952 : HALF SwitchS971 : MODE SwitchS972 : HALF SwitchS975 : RECINH_F SwitchS6101 : POWER SwitchS6102 : SINGLE DISC CHANGE SwitchS6103 : OPEN/CLOSE SwitchS6104 : CD 1 SwitchS6105 : CD 2 SwitchS6106 : CD 3 SwitchS6107 : CD 4 SwitchS6108 : CD 5 SwitchS6201 : DECK 2 OPEN SwitchS6202 : DISPLAY/DEMO SwitchS6203 : DECK 1/2 SwitchS6204 : H.BASS SwitchS6205 : FF SwitchS6206 : REW SwitchS6207 : DECK 1 OPEN SwitchS6301 : CD SwitchS6302 : TAPE SwitchS6303 : STOP SwitchS6304 : REC SwitchS6305 : TUNER/BAND SwitchS6306 : MUSIC PORT SwitchS6307 : SUBWOOFER SwitchS6308 : MULTI DISC CHANGE SwitchS7201 : REST SwitchVR6491 : VR VOLUME JOGVR6511 : VR MIC VOLUME JOG· The voltage value and waveforms are the reference voltageof this unit measured by DC electronic voltmeter (highimpedance) and oscilloscope on the basis of chassis.Accordingly, there may arise some error in voltage valuesand waveforms depending upon the internal impedance ofthe tester or the measuring unit.· Importance safety notice :Components identified by mark have specialcharacteristics important for safety. Furthermore, specialparts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. areused. When replacing any of components, be sure to useonly manufacturer´s specified parts shown in the parts list.Caution !IC, LSI and VLSI are sensitive to static electricity.Secondary trouble can be prevented by taking care duringrepair.· Cover the parts boxes made of plastics with aluminium foil.· Put a conductive mat on the work table.· Ground the soldering iron.· Do not touch the pins of IC, LSI or VLSI with fingers directly.17 Schematic Diagram57SA-AK640PL