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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
Information was exactly what I needed. Delivery was overnight (less than 12 hours) and I was happy with the process.
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5 STARS for FAST DELIVERY, BEST PRICES and QUALITY PRODUCT. Item was exactly as described with superb resolution. Will definitely source all my future requirements from this website. Thanks a lot owner-manual.com!
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OEM manual provided all schematics, board layouts and component specs necessary to facilitate unit maintenance. All pages were clear and readable.
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Good condition and quality. Hard to find anywhere in Internet, only on this site.
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Exactly what I needed to be able to bring the amp back to life... will come back to this site the next time I need schematics.
KRF-V7771D/V8881D/VR-2080/2090
CIRCUIT DESCRIPTION
1. The back up item and initialization condition
1-1 Back up
� POWER ON/OFF � VOLUME LEVEL � AUDIO INPUT � SELECTOR � VIDEO INPUT � SELECTOR � SPEAKER A � SPEAKER B � CD2/TAPE2 MONITOR � TONE � LOUDNESS � DISPLAY MODE � RDS DISPLAY MODE � DIMMER � SURROUND MODE � DSP MODE � ROOM SIZE � WALL TYPE � EFFECT LEVEL � MIDNIGHT MODE � DISTANCE : OFF : -66dB : TUNER : VIDEO1 : ON : OFF : TAPE2 OFF : OFF : OFF : DEVICE+DGTL/ANLG : FREQUENCY : DIMMER 1 (LIGHTEST) : STEREO : ARENA : Med : Med :3 : OFF : FL/FR : 10ft : C : 10ft : RS/LS : 5ft : SW : 10ft : LARGE : NORMAL � SURROUND SP. � SUB WOOFER � SW Re-Mix � INPUT LEVEL : NORMAL/WIRED : ON : OFF : 0dB
� CH. LEVEL : 0dB � TONE BASS : 0dB � TONE TREBLE : 0dB � TUNING MODE : AUTO � PRESET MEMORY : TEST MEMORY FREQUENCY (Same value with KR-V999D/1090VR) � LAST BAND � FM LAST FREQUENCY � AM LAST FREQUENCY � LAST P. ch � PTY SELECT MODE � PTY SEARCH MODE � TP SEARCH MODE � RDS DISPLAY MODE : FM : 87.5MHz : 531kHz (CH. SP 9kHz) : 530kHz (CH. SP 10kHz) : [- -ch] : OFF : OFF : OFF : FREQUENCY MODE
1-2 The initial setting
While pressing POWER key, plug the AC power cord into an AC outlet (K,P type) or turn on the AC POWER switch.
� FRONT SP. � CENTER SP.
2. Condition by the destination or model
TYPE K1 1700 K2 1610 K4 1700 RBDS E1 E3 RDS Q1 RDS M BAND FM AM FM AM Reception frequency 87.5MHz~108.0MHz 530kHz~1700kHz 87.5MHz~108.0MHz 530kHz~1610kHz Channel space 100kHz 10kHz 100kHz 10kHz IF +10.7MHz +450kHz +10.7MHz +450kHz PLL standard frequency 25kHz 10kHz 25kHz 10kHz
77
(0 : Pull down, 1 : Pull up) DSW3 0 0 1 0 0
76
Diode sw DSW2 75 DSW1 0 0 0 0 1 0 0 1 1 0
74 DSW0
0 1 0 1 1
FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz AM 530kHz~1700kHz 10kHz +450kHz 10kHz FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz AM 531kHz~1602kHz 9kHz +450kHz 9kHz FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz AM 531kHz~1602kHz 9kHz +450kHz 9kHz FM L 65.0MHz~74.0MHz 10kHz +10.7MHz 5kHz FM H 87.5MHz~108.0MHz 50kHz +10.7MHz 5kHz AM 531kHz~1602kHz 9kHz +450kHz 9kHz K2/E1 is switched with only the setting of DSW1 (X11 : S601). (DSW1 = 0 : K2 type, 1 : E1 type)
1 0
0 0
1 X
1 1
3. TEST MODE
[setting method] While pressing INPUT SELECTOR key, plug the AC power cord into an AC outlet (K, P type) or turn on the AC POWER switch. When a set is set up in test mode condition a set becomes the following condition. Automatic POWER ON. All indicator tube (FL) and
CLIP INDICATOR LED are lighted. The other LED are flashed. A backup at the thing except ON/OFF of POWER is initialized. [cancel method] The power supply is turned off.
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