Alpine al 55 service manual

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SERVICE MANUAL ALPINE

STEREO
CASSETTE
DECK

/ILPINE

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Co ntents
Specifications ................................................................. 2
Parts Locations and Disassembly Instructions ............................. ........... 3 to 5
Adjustment Procedures ........................................................ 6 to 7
Adjustment Locations ........................................................... 8
Trouble Shooting Guide ...................................................... 9 to 11
Replacement of Mechanical Parts ............................................... 12 to 13
Block Diagram ................................................................ 13
Parts Layout on P.C. Boards .................................................. 14 to 18
Wiring Diagram ........................................................... 19 to 20
Schematic Diagram ........................................................ 21 to 22
Electrical Parts List ........................................................ 23 to 31
Cabinet Assembly Parts List ...................................................... 32
Exploded View (Cabinet) .................................................... 33 to 34
Exploded View (Cassette Deck) ................................................ 35 to 36
Cassette Deck Assembly Parts List .................................................. 37
Packing Method View ........................................................... 38
Packing Assembly Parts List ...................................................... 38
Semi-Conductor Lead identifications ............................................ 39 to
SpeCIfIcatIons
Power Source ...................... 110/127/220/240V AC 50/60 Hz (For Multi-Voltage Model Only)
120V, AC 60 Hz (For SinglevVoltage Model Only)
Power Consumption ........................................................... 25W
Tape Speed ...................................................... 4.76 cm/sec. t 1.5%
Wow & Flutter (JlS WRMS Playback Mode) .......................................... 0.0:7 %
FF/REW Time (060) ........................................................ 100 sec.
Frequency Response ........... Normal: 30 Hz \a 16 KHz, CrO; : 30 Hz N 17 KHz, Metal: 30 H2 \4 18 KHz
Rec/Play Head ................................................ Hi-B Hard Permalloy Co re
Erase Head ................................................... Double Gaps Ferrite Core
Load Impedance .................................... Line Out: 100K ohm, Head Phone: 8 oh m
S/N Ratio (NR/OFF) ................................ NR-B: Norm: 57 dB, Chrome/Metal: SQdB
NR-C: Norm: 63 dB, Chrome/Metal: GSdB
Input Sensitivity ................................................... Mic: Norm/0.3m V
Line: Chrome/MetalliOOm V
Output Level .................................... Line Out: 550mV :1 dB, Head Phone: 55nV
Stereo Separation ........................................................... 35 d B
Semiconductors ................................ 55 Transistors, 4 le, 23 Diodes, 6 Zener Dimes
Dimensions ................................................. 435(W) x 106(H) x 2600)
Weight ................................................................... 4.3 <9
Distortion .................................................................. 3%