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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
ECM-TS125
SERVICE MANUAL
Ver 1.0 1999. 05
SECTION 1 GENERAL
This section is extracted from instruction manual.
AEP Model
SPECIFICATIONS
1 2
Type Dimensions
Electret condenser microphone Microphone parts: 11 � 26 mm (diameter/length)(7/16 � 11/16 in.) Battery box parts: 40 � 16.5 � 46 mm (w/h/d) (15/8 � 21/32 � 113/16 in.)
Frequently response 100 � 16,000 Hz Directivity Unidirectional � 2 Output impedance 3 k� ±30% Sensitivity Open circuit output voltage level -42 ±4dB 0 dB=1V/Pa, 1,000 Hz(1Pa=10µ bar=94 dBSPL) Approx. 100 hours (with Sony lithium battery CR2025(not supplied)) Maximum sound pressure input level Approx. 110 dBSPL 1% wave distortion at 1,000 Hz (0 dBSPL=2 � 10-5Pa) Battery life Operating temperature range 0°C � 40°C (32°F � 104°F) Design and specifications are subject to change without notice. 3 4 5 6 7 8 9
POWER switch Battery check indicator When you turn the power on, the battery check indicator lights up momentarily. This is normal. The light tells you that the battery still has life. When the battery becomes weak, the indicator lights dimly or does not light at all. L-shaped stereo miniplug (gold plated) Battery box You can clip the battery box to your tie, lapel or pocket. Microphone jack L-shaped stereo miniplug (gold plated) Battery compartment Microphone Holder clip A Interlock the projection of the holder to the groove on the microphone. B This microphone holder allows you to tilt the microphone 45° backward or forward.
Mass
Cord
Microphone parts (including cord): Approx. 15 g (0.53 oz.) Battery box parts (including lithium battery and cord): Approx. 17 g (0.6 oz.) Microphone parts: �2.2 mm (3/32 in.)OFC litz cord (2 core shielded) Length: approx. 1 m (393/8 in.) Battery box parts: �2.2 mm (3/32 in.)OFC litz cord (2 core shielded)
Length: approx. 0.3 m (117/8 in.) Supplied accessories Battery box (1) Holder clip (1)
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer. 1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. 4. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement. Check the B+ voltage to see it is at the values specified. Flexible Circuit Board Repairing
2.
ELECTRET CONDENSER MICROPHONE
MICROFILM
3.
5. 6.
� Keep the temperature of the soldering iron around 270�C during repairing. � Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). � Be careful not to apply force on the conductor when soldering or unsoldering.
�2�
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