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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.
;
reasonable price for the schematic - the service is perfect, all as expected and pointed by instructions - good scan of the original plans - thank you!
Pin No. 36 37 38 39 40 41 42 43 44
Pin Name LM LOD LM EJ N/R OUT P.ON CM ON TAPEON COLSEL RC IN1 TEST
I/O O O O O O O I I I
Function Loading/tape operation motor control signal output to the LB1638M (IC361) (For the loading direction and forward side operation) *1 Loading/tape operation motor control signal output to the LB1638M (IC361) (For the eject direction and reverse side operation) *1 Forward/reverse direction control signal output to the CXA2510Q (IC301) �L: forward direction, �H�: reverse direction Polar stereo detection signal output terminal �H�: polar stereo Not used (open) Capstan/reel motor (M901) drive signal output terminal �H�: motor on Tape system power supply on/off control signal output terminal �H�: tape on Setting terminal for the illumination color �L�: amber, �H�: green (fixed at �H�) Rotary remote commander shift key A/D input terminal Setting terminal for the test mode �L�: test mode (normally fixed at �H�) Power supply on/off control signal output terminal at the illumination and liquid crystal display driver (IC901) �H�: power on At power select switch (S501) on mode: �H� output at the accessory on At power select switch (S501) off mode: �H� output at the power on Beep sound output terminal Line muting control signal output terminal �H�: line muting on Chip enable signal output to the electrical volume (IC161) Chip enable signal output terminal Not used in this set (open) Serial data transfer clock signal output to the electrical volume (IC161) Serial data transfer clock signal output terminal Not used in this set (open) Serial data output to the electrical volume (IC161) Tape muting on/off control signal output to the CXA2510Q (IC301) �H�: tape muting on Dolby control in/out terminal At initial mode: valid/invalid selection input of dolby function (�L� input: valid) At normal mode: dolby on/off control signal output to the CXA2510Q (IC301) �H�: dolby on Dolby B/C selection control in/out terminal At initial mode: dolby B only/dolby B and C type selection input (�L� input: dolby B and C) At normal mode: dolby type selection signal output �L�: dolby B, �H�: dolby C Not used this function (fixed at �H�) Whether a music is present or not from CXA2510Q (IC301) is detected at auto music sensor �L�: music is present, �H�: music is not present METAL control in/out terminal At initial mode: auto/manual mode selection input of METAL function �L�: manual mode At manual mode: METAL on/off control signal output to the CXA2510Q (IC301) �H�: METAL on At auto mode: input at MTLIN (pin #º) Power supply on/off control signal output for the A/D converter �L�: power on Internal RAM reset detection signal input from the RN5VD23AA (IC651) Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 100 msec after reset System reset signal input from the reset signal generator (IC652) �L� is input for several 100 msec after power on, then it changes to �H� Sircs signal input from the remote control receiver (IC902) Battery detect signal input terminal �H�: battery on Power select switch (S501) input terminal �L�: off (halt mode), �H�: on (operation mode) Accessory detect signal input terminal �L�: accessory on Detects the removal of the attaching and removing type front panel block �L�: attaching
45
ILL ON
O
46 47 48 49 50 51 52 53
BEEP MUT VOLCE SUBCE VOLCKO SUBCKO VOLSO TAPMUT
O O O O O O O O
54
DOLON
I/O
55
DOLBC
I/O
56
AMSIN
I
57
MTLSEL
I/O
58 59
AD ON RAMBU
O I
60 61 62 63 64 65
RESET SIRCS BU IN PW SEL ACCIN NOSESW
I I I I I I
� 31 �
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