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The TEAC A-1500's Service Manual was instrumental in reviving this classic reel-to-reel. Not only does it have the schematics, exploded parts diagram and parts list, it also provided mechanical adjustment information that approximate factory default settings.
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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
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downloaded next day , manual is very helpful , fast and easy
Pin No.
136 137 138 139 140 141 142 143 144
Pin Name
ALE IO BHE IO RD IO IDE_ENA IO IDE_DIR
I/O
I � I � I � I � I Address latch enable. Not used. Bus high enable. Not used. Read signal. Not used. IDE enable. Not used. IDE direction.
Description
IC, BU2872AK Pin No.
1~4 5 6 7 8 9 10 ~ 13 14 15 ~ 25 26 27 28 ~ 37 38 39 ~ 42 43 44
Pin Name
SW1 ~ SW4 SO SI VSS SCK CS K1 ~ K4 VDD S1 ~ S11 G11 VEE G10 ~ G1 VDD L4 ~ L1 VSS OSC
I/O
I O I I I I I I O O I O I O I I/O transmission. (Connected to VSS) Serial data are output to higher bits. Serial data are input from higher bits. Connected to system ground. Serial data is fetched at start-up.
Description
General purpose input terminal. The input data can be sent to microprocessor in serial
Serial initialization at "L". Valid when "H". Key scan data input terminal. Connected to system power supply. Segment output terminal. Output is P-channel open drain having pull-down resistor. Output terminal for grid. Output is P-channel open drain having pull-down resistor. Pull-down resistor for driver output is connected to this terminal. Output terminal for grid. Output is P-channel open drain having pull-down resistor. Connected to system power supply. LED output terminal. CMOS output. (Pin 39 not used) Connected to system ground. External capacitor for oscillation is connected to this terminal.
� 26 �
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