Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
Text excerpt from page 7 (click to view)
TA-FE370/FE570 SECTION 4 DIAGRAMS
4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram: � All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. � All resistors are in � and 1/4 W or less unless otherwise specified. � f : internal component. � 2 : nonflammable resistor. � C : panel designation.
These are omitted.
� Circuit Boards Location
STANDBY board
Note on Printed Wiring Board: � X : parts extracted from the component side. � : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) � Indication of transistor
Q B C E
AC OUTLET board
POWER SW board
Q B C E These are omitted.
Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. � A : B+ Line. � B : B� Line. � Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : TUNER � Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. � Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. � Circled numbers refer to waveforms. � Signal path. F : TUNER E : TAPE1/DAT IN a : RECOUT d : TAPE2/MD IN J : CD I : PHONO
MAIN board
HEADPHONE board
SPEAKER SW board
VOLUME board CONTROL board LOUDNESS board
� Waveform � CONTROL Board �
1 IC801 1 (XOUT)