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There are currently no product reviews.
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Excellent just what I needed to replace the electrolytic caps and make this old gem a beauty again. Was as scan of the original photocopied service manual.
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It was helpful to get schematic with waveforms in important points and lot of service information. Manual is good quality, fast delivered. Of course it is hardcopy of paper one with all its disadvantages.
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I want to give you a real heads-up for your desire to enable such people as I to acquire the information I need to maintain the older types of equipment such as this Akai HXA351W. You do a swell job with all the processes you have to perform so I can have a legible, thus usable
document which does not send me crazy trying to figure out the blurry text of a bad copy.
Very well done, Thomas.
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This manual is very well presented and after printing out looks about as close to an original as I think you can get. The quality is second to none.
The content of the manual is comprehensive and I think it would be well suited to an audio repair professional which I'm not but I did find it very informative and helpful.
The cost of the manual is more than covered by the money I'll save when I change the keep memory battery now I have the relavant info.
Very pleased with my purchase and can recommend it wholeheartedly as I can other manuals I've downloaded from this site.
Regards
Limey Alex
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Complete manual including mechanical part in good pdf quality. Shaded greys of the pcb due to pdf not perfect but usable.
KRC-31Y/36/366L/37/Y /391/394/Y/466R/4904Y
MICROCOMPUTER�S TERMINAL DESCRIPTION
q Microcomputer : UPD780058GCxxx (X14 : IC1)
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Pin Name DSI PANEL AVSS L-RST L-CE AVREF1 PLL-DATA PLL-CLK L-DATA L L-DATA S L-CLK R-DATA R-QUAL CH-DATA C CH-DATA H CH-CLK M-STBY T-END ACC-DET BU-DET IC2 TYPE 0 IC2 TYPE 1 TYPE 0 TYPE 1 TYPE REF I/O O I O O I I/O O I O O I I I O I/O I �H� : Standby I I I I I I I O and service. 28 29 30 31 32 33 34 35 36 37 38 39 40 MOTOR PLL-CE SD ASF LO/DX VSS1 P-MUTE SVR IC2-SCL IC2-SDA MUTE P-STBY O O I �L� : Station does not exist O O O O O I/O O O Noise detection time constant switch. Local seeking switch. �H� : LO, �L� : DX GND. Power amplifier muting. SVR control. E-volume communication clock. E-volume communication data. Muting control. Power amplifier standby. 78 79 80 PHONE NOISE AV CONT I I O 76 77 S-METER T-MODE I I 73 74 75 XT1 VDD0 AVREF 0 I VDD. VDD. Reference voltage. SD detection. �H� : SD exists, �L� : SD does not exist Cassette tape mode detection. Navi mute : Over 2.5V, Tel mute : Less tha 2.5V Noise detection during FM mode. reference voltage. Cassette mechanism motor. �H� : ON, �L� : OFF Front-end communication ship enable. Station detection. �H� : Station exists, 68 69 70 71 72 VDD1 X2 X1 IC I VDD. Main system clock. Main system clock. Tape end detection. �H� : Run, �L� : Stop ACC detection. Backup detection. For service. �L� : Normally For service. �L� : Normally Destination discrimination. Destination discrimination. Reference voltage for destination 59 60 61 62 63 64 65 66 67 SUBRESET REMOTE R-CLK CH-REQ C PACK-IN KEY-REQ VSS0 O I I I I I I Sub motor control. System reset. Remote control. RDS clock. Changer request. Cassette tape pack-in detection. Key signal detection. GND. Function / Operating Condition DSI control. Panel detection. �L� : Panel exists GND. LCD driver reset. LCD driver chip enable. Reference voltage. Front-end communication data. Front-end communication clock. LCD driver communication data. LCD driver communication data. LCD driver communication clock. RDS data. 55 RDS QUAL. Changer communication data. Changer communication data. Changer communication clock. Cassette tape standby detection. 57 58 FWD/REV SUB+ I O 56 EQ-MUTE O MS-CONT O �H� : Play, �L� : FF/REW Cassette tape muting. �H� : ON, �L� : OFF Cassette tape runing direction detection. �H� : FWD, �L� : REV Sub motor control. 54 MUSIC I Pin No. 41 42 43 44 45~47 48 49 50 51 52 53 Pin Name P. CON-DET CH-CONT CH-REC H EN2-1 EN2-0 BEEP EN3 EN1 SW 5V I/O I O O O O O O O O Function / Operating Condition P. CON short-circuited detection. Changer control. Changer request. Power supply IC control. Power supply IC control. Buzzer. Power supply IC control. Power supply IC control. P. ON 5V control. �H� : OFF, �L� : ON Tape signal detection. �H� : Signal does not exist, �L� : Signal exists tape advanced sensitivity control.
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