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This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
 ;
This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
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I was at first dubious about payiong for downloaded manuals but having done so, I was extremely impressed with quality of the two manual I ordered, well worth the small price I paid.
I would highly recommend these to my friends.
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reasonable price for the schematic - the service is perfect, all as expected and pointed by instructions - good scan of the original plans - thank you!
CHAPTER 3. SERVICE PRECAUTION
1. IPL (Initial Program Loading) FUNCTION
1) INTRODUCTION
The application software of the UP-600/700 written in the flash ROM. In the following cases, writing procedure of the application software into the flash ROM is required 4. Turn on the power switch of the UP-600/700. 5. The following display is shown and the IPL procedure is started. When the procedure is completed, the message of "Completed" is shown.
� When the flash ROM is replaced with new one. The service part
flash ROM does not include the application software in it.
IPL from PROM Version check� Erase �
� When IPL writing is required because of change in the software.
The service part ofthe main PWB unit includes the flash ROM with the application software written in it, and there is no need for writing the application software when replacing the main PWB unit.
2) IPL PROCEDURE
There are two ways of IPL procedures.
� IPL from P-ROM � IPL from PC communication (Please refer the next section)
The detailed descriptions on the above procedures are given below.
26 27 28 29 2A 2B 2C 2D 2E 2F 30 31
IPL write start
3) IPL FROM P-ROM
Master ROM-1 : VHI27801RAP1A Master ROM-2 : VHI27801RAQ1A Before working on the installation, turn off the power switch on the UP-600/700 and unplug the AC code from the AC outlet. 1. Insert a screwdriver into the slit on the right side of the lower cabinet to remove the option RAM case.
32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F Verify � Completed. IPL write completed
6. Turn off the power switch of UP-600/700. 7. Remove to the IC sockets on the IPL ROM PWB. 8. IPL switch (SW301) on the IPL ROM PWB: Set the IPL switch (SW301) to OFF position. 9. Perform the master reset.
2. IPL switch (SW301) on the IPL ROM PWB: Set the IPL switch (SW301) to ON position. 3. Install to the IC sockets on the IPL ROM PWB.
ROM1 ROM2
ROM1
on off
ROM2
SW301
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