I PURHASED THIS PRODUCT BECAUSE I WAS HAVING PROBLEMS WITH MY CDR20 HARMAN KARDON RECORDER. WHICH I PURCHASED NEW 12 YEARS AGO. AFTER REVIEWING THE MANUAL, I WAS ABLE TO ADJUST THE TENSIONER IN THE SYSTEM. WORKS LIKE A CHAMP!.
SAVED ME AT LEAST 100.00 WHICH WAS WHAT A SERVICE REPAIR STATION WANTED. GREAT MANUAL EASY TO READ. SPECIALLY AFTER I PRINTED THE PAGES WHICH DEALT WITH MY RECORDER. THANKS A LOT!!!!!!!!
I have never bought a service manual which is as competely readable as this althogh it was a scanned pdf. Thank you for this succesful manual also cheaper than other sites.
Thanks for a very good and readable servicemanual. Just what I needed as a "dinosaur technician". I really recommmend this site and will come back.
Åsbjörn
The manual I purchased was just what I needed. I was glad to find a site where I can find so many manuals on a wide variety of products.
Text excerpt from page 3 (click to view)
KRC-391/Y,36/Y,30Y
COMPONENT DESCRIPTION
q SYNTHESIZER UNIT(X14-6892/9002-XX)
REF.No. IC1 IC2 IC4 IC6 IC7 IC8 IC9 IC10 IC11 IC12 Q1 Q10 Q11 Q20 Q40 Q50 Q101 Q151 Q201 Q221-224 Q251 Q301 Q501 Q551 Q552 FUNCTION SYSTEM µ-COM E-VOLUME POWER AMPLIFIER RDS DECODER POWER IC MUTE CONTROL LOGIC EQUALIZER AMPLIFIER SUB MOTOR DRIVER RESET IC EEPROM P.CON.DETECTION BACK-UP DETECTION SERGE DETECTION ACC DETECTION PREOUT MUTE DRIVER 5V SW DSI SW PANEL 5V SW NOISE DETECTION PREOUT MUTE POWER IC SVR SW LOCAL SEEK SW MOTOR DRIVER AVR MAIN MOTOR SW MAIN MOTOR SW OPERATION
Speaker output
3 input NOR gate x 3 For full logical cassette mechanism control For full logical cassette mechanism sub motor driver Detection voltage below 3.0V Detects P.CON voltage. Detects the back-up voltage. Detects serge voltage. Detects ACC voltage. Mutes when the base terminal voltage level becomes "L". Works when the base terminal voltage level becomes "L". LED for DSI works when the base terminal voltage level becomes "H". Works when the base terminal voltage level becomes "L". Supplies VDD to panel. Detects noise. Mutes when the base terminal voltage level becomes "H". Discharges the capacitor's voltage of SVR terminal after the base terminal voltage becomes "H". Changes to the local seeking after the base terminal voltage becomes "H". Works when the base terminal voltage becomes "H". Supplies the power to the motor driver. Works when the base terminal voltage becomes "L". Works when the base terminal voltage becomes "H".
Receives key signal when the base terminal voltage becomes "L". Key illumination color becomes green when the base terminal voltage becomes "H". Key illumination color becomes red when the base terminal voltage becomes "H".
