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This is a top quality manual. You couldn't get better if you had the original and scanned it yourself. Best price on the net as well. Diagrams are clear and complete, text is sharp and easy to read. Granted you don't get the manual the second you click pay, but the few hours you have to wait for it to be available for download isn't a problem at all. This is a very reliable company.
Very VERY pleased with the product, and will buy others. Thanks!
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In a word AWESOME.
I never expected the quality and abundant content that I got with this manual. Everything you'd ever want to know from a service perspective is found in this manual, along with... as a bonus, operating instructions on how to use the unit. WOW. Very impressed with the quality of the manual. You won't be disappointed if you're looking for the EVS900 service manual.
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I thank Owen-Manuals.com for the wonderful service rendered to me, and this manual which I purchased helped me a lot in servicing my Denon System, which was lying in a dead state.
Thanks Owner-Manual.com
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I purchased this manual to repair my Teac set and with the support of this manual I rectified the problem.
Thanks Owner-Manuals.com
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Excellent service manual, i didn't believe i could find it for such old product, it is very explanatory, managed to fix the disk player!!!
CIRCUIT DESCRIPTION
Setting the batteries or AC adaptor (see figure 7) When setting the batteries or AC adaptor, the voltage VDD2 is always applied to RAM and CPU since Q6 and IC5 are turned on. Power on sequence (see figure 7) When the power switch is turned on, PON signal is being H (PON = VDD2). CPU knows to turn the power switch on, it provides H from VCON terminal to base of transistor Q4. Then both transistors Q4 and Q3 are turned on, the voltage VDD1 is applied to all devices. Power off sequence (see figure 7) When the power switch is turned off, POFF signal is being H(POFF= VDD2). CPU knows to turn the power switch off, VCON signal and base of Q4 will be L. Then both transistors Q4 and Q3 are turned off, Q3 stops to supply the voltage VDD1. Power down sequence (see figure 7) If the voltage across the batteries lowers and the terminal DPW of CPU comes less than 4.5V, VCON signal is L. Then both transistors Q4 and Q3 are turned off, Q3 stops to provide the voltage VDD1. Print sequence (see figure 7) When the PRINT button is pressed, TCON signal is H. Then both transistors Q2 and Q1 are turned on, the voltage VP for printing will be 9V.
Q1 Fuse
8.6V 8.8V 8.4V 0V 8.6V 8.8V 0V 0V 5.0V 4.8V
IC5
5.0V 4.8V
VP (+9 V) VDD2 (+5 V)
Q3
4.8V 0V
8.4~0V 8.4~0V
VDD1 (+5 V)
+
8.6V 8.8V 0V 0V 0V 0V
4.2V 4.8V
+
0V 4.8V 4.8V 0V
Q2
Q4
0V 0V
GND
VDD1
VCON DPW IC1 PON VDE TCON ON POFF
CPU
OFF
Power Switch Note : The voltages around transistors mean as follows; Upper figure : Power ON at no operation. Lower figure : Power OFF. Figure-7
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