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Super manual it contains all the things you need to service your Marantz 2100.
A very easy to understand and use manual. Well worth the money.
Very good information with clear drawings. Thanks!
The ease of this purchase was a good start. The content of this manual was exactly all I needed to retore my Tandberg 64.
All of the mechanical and electrical information is contained in the manual and the quality of the document makes reading the data easy.
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SECTION 5 ELECTRICAL CONFIRMATIONS AND ADJUSTMENTS
0 dB=0.775 V 2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.
Note: Confirm each contents of this section first of all. If the results are not satisfied, do the adjustment.
1. 2. 3. 4. 5.
Demagnetize the record/playback head with a head demagnetizer. Do not use a magnetized screwdriver for the adjustments. After the adjustments, apply suitable locking compound to the parts adjust. The adjustments should be performed with the rated power supply voltage unless otherwise noted. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.) The adjustments should be performed for both L-CH and RCH. Switches and controls should be set as follows unless otherwise specified.
L-CH peak Output level R-CH peak
within 1dB within 1dB
test tape P-4-A100 (10 kHz, â10 dB) L-CH MAIN board CN301 set R-CH MAIN board LINE OUT jack (PJ301) L-CH oscilloscope
â¢ Test Tape
Tape P-4-A100 WS-48B P-4-L300 Signal 10 kHz, â10 dB 3 kHz, 0 dB 315 Hz, 0 dB Used for Azimuth Adjustment Tape Speed Adjustment Level Adjustment
Record/Playback Head Azimuth Adjustment Procedure: 1. Mode: Playback
test tape P-4-A100 (10 kHz, â10 dB) MAIN board LINE OUT jack (PJ301) L-CH, R-CH level meter set + â
R-CH waveform of oscilloscope
in phase 45Â° good
90Â° 135Â° 180Â° wrong
Repeat step 1 to 3 in playback (REV) mode. After the adjustments, apply suitable locking compound to the pats adjusted.