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I was having a hard time finding the problem with this Mackie 1604 unit. I didn't have a schematic. Went looking on the web and found your site and the price was more then reasonable. Ordered it and within the hour had the manual and within 15 minutes had the unit fixed. Best $4.99 I ever spent. Thank you.
Doug
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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
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the manual is great and especially hard to find... thanks for the great service and having a hard to find manuel_
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Please tell us what you think and share your opinions with others. Be sure to focus your comments on the product. You will receive $2.50 of store credit for Your review.
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hat alles sehr gut geklappt. Das Servicemaual ist gut zu verwenden. Die Pläne und Schrift
ist klar und leserlich. Außerdem preiswert. Grüße an alle Hifi-Bastler
SECTION 4 ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS
TAPE RECORDER SECTION
PRECAUTION
Record/Playback/Erase Head Azimuth Adjustment Procedure : 1. Mode : FWD playback
test tape P-4-A100 (10kHz, �10dB) 47K � set LINE OUT (JK301) level meter
1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase head pinch roller rubber belts capstan 2. Demagnetize the record/playback/erase head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement
Torque Forward Forward Back Tension Reverse Reverse Back Tension FF/REW CQ-102RC CQ-102RC CQ-201B Torque Meter CQ-102C CQ-102C Meter Reading 36 to 61 g � cm (0.5 to 0.84 oz � inch) 2 to 6 g � cm (0.028 to 0.083 oz � inch) 36 to 61 g � cm (0.5 to 0.84 oz � inch) 2 to 6 g � cm (0.028 to 0.083 oz � inch) 61 to 143 g � cm (0.85 to 1.98 oz � inch)
2. Turn the adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1dB.
L-CH peak within output 1 dB level
within 1 dB
Screw position
R-CH peak
screw position L-CH peak R-CH peak
Tape Tension Measurement
Mode FWD REV Tension Meter CQ-403A CQ-403A Meter Reading more than 100g (more than 3.53 oz) more than 100g (more than 3.53 oz)
3. Phase Check Mode : FWD playback
test tape P-4-A100 (10kHz, �10dB) L-CH 47K � Osilloscope
set
V
H
4-2. ELECTRICAL ADJUSTMENTS
TAPE RECORDER SECTION 0dB = 0.775V
R-CH
47K � LINE OUT (JK301) screen pattern
1. The adjustnemts should be performed in the order in the service manual. (As a general rule playback circuit adjustment should be completed beforeming recording circuit adjustment.) 2. The adjustments should be performed for bothe L-CH and RCH unless otherwise indicated. Standard Intput Level
Input terminal source impedance input signal level LINE IN 10k� 0.5V (�3.8dB)
in phase 45° good
90°
135°
180°
wrong
4. Change the reverse playback mode and repeat the step 1 to 3. 5. After the adjustment, lock the adjustment screw with suitable locking compound. Adjustment Location : � record/playback/erase head �
Standard Output Level
Output terminal load impedance output signal level LINE OUT 47k� 0.5V (�3.8dB)
Test Tape
Type P-4-A100 WS-48B Signal 10kHz, �10dB 3kHz, 0dB Used for Azimuth Adjustment Tape Speed Adjustment
FWD side
REV side
adjustment screw
� 16 �
 $4.99 PMCDR50 SONY
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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