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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
KRC-778R/RV/RY/RYV,878R,PS978R
TEST MODE
(12.2) Procedure for canceling the MASK key request (when the set is reset or the back-up power is turned off while the MASK key is enabled)
1. When the power is supplied and the set is switched on, "TRANSMIT1" is displayed and the MASK key request mode starts. 2. Point the MASK key toward the light sensor and press and hold for more than 3 seconds (until the level indicator indicates the full condition). 3. When "TRANSMIT2" is displayed, press and hold the MASK key again for more than 3 seconds.If "TRANSMIT1" is displayed now, go back to step 2 and restart from there again. 4. When "APPROVED" is displayed, the MASK key is enabled and the set is turned on.
(13) Other
o Automatic panel closing when the TAPE/CD/MD is inserted is disabled. o Pressing the ATT key ON/OFF opens or closes the panel. (The ATT operation can be activated from the remote control unit.) o The DNPP/SBF key of the remote control unit (RC-510) functions as the menu mode ON/OFF key. o The OPEN/CLOSE key of the remote control unit (RC510) functions as the audio adjustment mode ON/OFF key. o The menu feed operations occur only with the necessary features. o Display such as "CODE OFF" is not displayed at the moment power is turned on. o Pressing the TI (AUTO) key during the changer operation turns 2zone on, and pressing the TI (AUTO) key again cancels it. The P/S dot lights during the 2zone operation. o Pressing and holding the MENU key for more than 1 second while ALL OFF initiates the MASK KEY write mode. o The dimmer control of the FL models or the contrast control of the LCD models can be adjusted only to 0/5/10 using the UP/DOWN keys.
(12.3) Procedure for MASK key initialization (Resetting the MASK key enabled condition to the factory-set condition)
1. While holding the FM and preset 6 keys, press RESET to enter the test mode. 2. "TRANSMIT1" is displayed and the MASK key request mode starts.At this time, the display shows "* *" in place of "[ ]". 3. Press the MASK key cancel remote control for more than 3 seconds. 4. When "TRANSMIT2" is displayed, press and hold the MASK key again for more than 3 seconds. 5. When "APPROVED" is displayed, the MASK key is canceled, the demonstration mode is set, the test mode is canceled and the set returns to the factory-set condition.
(12.4) MASK key all-clear procedure
1. While holding the FM and preset 6 keys, press RESET to enter the test mode. 2. Press and hold the AUDIO key for more than 1 second to enter the menu mode. 3. Press the Track UP/DOWN key to select "Mask key". 4. Press and hold the FM or AM key for more than 2 seconds so that "TRANSMIT1" is displayed. 5. Point the MASK key cancel remote control toward the light sensor and press for more than 3 seconds (until the level indicator indicates the full condition). 6. When "TRANSMIT2" is displayed, press and hold the MASK key again for more than 3 seconds.If "TRANSMIT1" is displayed now, go back to step 2 and restart from there again. 7. When "APPROVED" is displayed, the E2PROM is cleared entirely and the condition in "(14) MASK key write procedure in production line (when the E2PROM is in the initial status)" returns.
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