Panasonic RQ-2720 Service Manual Download Page 1

Summary of Contents for RQ-2720

Page 1: ...ard rewind and cue review 1 hour with C 60 cassette tape Specifications are subject to change without notice National Panasonic Track system Input Output Speaker Dimensions Weight o This is the Servic...

Page 2: ...p eject button Monitor jack Pause switch Record button Volume control Microphone sensitivity selector LOW HIGH Playback button Battery case removal knob Recording indication lamp Review button Battery...

Page 3: ...n be detached See fig 8 Record playback head 3 screws Screw Stop ring Fig 8 C How to remove lower base plate 1 Remove the set screw to detach the flywheel belt cover See fig 9 2 Detach the snap rings...

Page 4: ...than 1002 may vary greatly with the direction of mounting therefore mount the white side on the pattern side 6 Do not re use the tantalum capacitors hall device or ceramic capacitors after removal Us...

Page 5: ...ion is the opposite of a Thus the motor speed is kept constant Tape speed control in playback mode Tape speed control of about 20 is possible during playback operation When switch S5 in VR101 tape spe...

Page 6: ...ocked oe REW Possible to FF at REW Locked FF Possible to REW CUE Locked yaaa Locked with both CUE and PLAY buttons pressed REVIEW Locked Pane Locked with both CUE and PLAY buttons pressed With CUE or...

Page 7: ...d 1 Playback the test tape middle 2 Adjust tape speed adjustment VR102 so that frequency becomes 3 000 Hz Record playback head RIG 0d Test equipment connection is shown in fig 24 Place UNIT into recor...

Page 8: ...of a stop watch Standard value 8 5 2 seconds If the measured time is not as specified adjust as follows 1 Add 3V to DC IN and put the unit into FF mode Make parallel connection of 220K Shown in fig 2...

Page 9: ...16 D103 oe c1012 VR103 Ti djustment ipo imer adjustmen aiGo R106 C104 1 VR2 Battery check indicator D C18 R19 adjustment VR C23 R18 C17 C22 R15 VR1 Bias current adjustment VR R21 G21 Q1 R33 ot C35 R1...

Page 10: ...RUS 39K Qioe 28C 2412 RRD18XJ272 R121 RRD18XJ562 INTEGRATED agey 0 61V R122 ERD25TJ106 CIRCUITS d R123 RRD18XJ223 IC1 M51141P z Q103 R124 RRD18XJ124 C2 M51503L om R125 RRD18XJ391 ODES page 1 R126 RRDI...

Page 11: ...MN Qi06 f et ees ee re r a ie o Ania 1 ro vi oo r Q103 2SC2412 9SAICGS T Gln ee PD C Seana and oe e ieee ee eee O ae ee f i ad T O Z cd ag 75 star 2 else S O 2 Fl me as cS 4 m7 Zl oe 8 HP 5 Q Ss t cen...

Page 12: ...ne BATTERY BLK a O 2 es ie I TERMINAL Im S1 1 1 2 RECORD PLAYBACK SELECTION SWITCH 2 ov 6 30v 7 VLT a 3 ov 8 ov IC2M51503L Qi104 Qios 2SA881 2SC2412 Q2 2SC2412 ET OV B 2 41 8 0 61V ov OV 15 IC1M51141P...

Page 13: ...BN1650 M48 QBN1651 M49 QBC1339 M50 QBN1648 M51 QBN1647 M52 QBP1843 M53 QBN1698 M54 QBT1864 M55 QBT1874 M56 QBN1696 M57 QBT1875 M58 QBT1863 M59 QBT1862 M60 QBT1860 M61 QBT1861 M63 XUC25FT M64 QXK2157 M...

Page 14: ...MECHANICAL PARTS LOCATION M1 M13 M67 rd M25 M28M32 M29 M30 M31 M6 M9 M12 M52 M10 M11 M4 M14 12...

Page 15: ...ring G1 3 QBG1641 Microphone Rubber G14 QBN7006 Cassette Lid Spring G15 QYF0377 Cassette Lid Assembly 3For All European areas except United Kingdom QYFO378 a For Asia Latin America Middle East and Afr...

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