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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
HTC-WX5
Record Bias Adjustment (Deck B) Procedure: 1. 2. 3. 4. Press the p (CD) button while pressing the DIRECTION MODE button. While pressing the p (CD) button, press the ª (TAPE A) button, set the function to �deck B�. Insert a tape into deck B, press the r REC button, and then press the ( button to start recording. Mode: Record
INPUT POINT 1) 315 Hz } 50 mV (�23.8 dB) 2) 10 kHz AF OSC attenuator 600 � PFJ-1 set blank tape CS-123
Record Level Adjustment (Deck B) Procedure: 1. 2. 3. 4. Press the p (CD) button while pressing the DIRECTION MODE button. While pressing the p (CD) button, press the ª (TAPE A) button, set the function to �deck B�. Insert a tape into deck B, press the r REC button, and then press the ( button to start recording. Mode: Record
INPUT POINT 315Hz 50 mV (�23.8 dB) 600 � attenuator PFJ-1 set
CD SECTION
Note: 1. CD Block is basically constructed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M� impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S Curve Check
oscilloscope
E-F Balance (1 Track Jump) check
oscilloscope BD board TP (TEO) TP (VC)
AF OSC
blank tape CS-123
Procedure: 1. Connect oscilloscope to test point TP (TEO) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in to play the number five track. 4. Press the �P (Pause)� button. 5. Check the level B of the oscilloscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following: � A/B x 100 = less then ± 7 (%) � B = 500 ± 100 mVp-p
BD board TP (FEO) TP (VC)
Procedure : 1. Connect oscilloscope to test point TP (FEO). 5. Mode: Playback
recorded position level meter
1 track jump waveform
Center of the waveform
5.
Mode: Playback
recorded position set
PFJ-1
set
PFJ-1
level meter
2. 3. 4.
Connect between test point TP (FOK) and Ground by lead wire. Turn Power switch on. Put disc (YEDS-18) in and turned Power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.) Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 3 ± 1Vp-p.
S-curve waveform symmetry
0V
B A (DC voitage)
5.
output
output point
point
level : 500 mV ± 100 mVp-p
Symmetry
6.
Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the RV341 (LCH) and RV441 (R-CH) on the AUDIO board to repeat steps 3 and 4.
6.
Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the RV301 (LCH) and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4.
A Within 3 ± 1 Vp-p B
Adjustment Location: [BD BOARD] (Conductor Side)
TP (RF) TP (VC) TP (FOK)
Adjustment level: The playback output of 10 kHz level difference against 315 Hz reference should be ± 1.0 dB. Adjustment Location: AUDIO board
Adjustment level: Output point from PFJ-1 playback level: 47.2 to 53.0 mV (�24.3 to �23.3 dB) Adjustment Location: MAIN board 6. After check, remove the lead wire connected in step 2. Note: � Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. � Take sweep time as long as possible and light up the brightness to obtain best waveform. RF Level Check
oscilloscope
CN101
IC101 TP (TEO) TP (FEO)
IC102
[AUDIO BOARD] (Component Side)
[MAIN BOARD] (Component Side)
BD board TP (RF) TP (VC)
TP (GND) IC103
RV341(Lch),RV441(Rch) Record Bias
RV311(Lch),RV411(Rch) Playback Level (Deck A)
CNS102
RV301 Record Level (L ch)
Procedure : 1. 2. 3. 4. Connect oscilloscope to test point TP (RF) on BD board. Turned Power switch on. Put disc (YEDS-18) in and playback. Confirm that oscilloscope waveform is clear and check RF
IC102
RV301 RV401 RV441 RV341
CNP105
RV311 RV411
RV301(Lch),RV401(Rch) Playback Level (Deck B)
signal level is correct or not. Note: Clear RF signal waveform means that the shape ��� can be clearly distinguished at the center of the waveform.
CNS101 RV351 Record Level (R ch)
RF signal waveform
VOLT/DIV : 200mV TIME/DIV : 500ns
level : 1.3 ± 0.3 Vp-p
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