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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!
ICD-B7
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) Common Note on Schematic Diagrams: � All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in � and 1/4 W or less unless otherwise specified. f : internal component. C : panel designation. A : B+ Line. Power voltage is dc 3V and fed with regulated dc power supply from battery terminal.
� Waveforms
3-7. IC BLOCK DIAGRAMS
1
0.5V/div 0.1µsec/div
1.0Vp-p 4.02MHz
IC103 LM4890MMX
IC101 ta (XOUT)
� � � � �
2
1.0V/div 10µsec/div
SHUTDOWN 1 BIAS 8 VO2 7 GND 6 VDD +IN 3 -IN 4 5 VO1
2.2Vp-p 32.768kHz
BYPASS 2
IC704 1 (32KOUT)
� Voltage and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : PB ( ) : REC � Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. � Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. � Circled numbers refer to waveforms. � Signal path. E : PB a : REC
3
0.5V/div 10µsec/div
1.2Vp-p 32.768kHz
IC704 8 (OSCOUT)
4
1.0V/div 0.2µsec/div 3.2Vp-p 5MHz
IC704 RS5C348A-E2
IC703
ul (X2)
Common Note on Printed Wiring Boards: � X : parts extracted from the component side. � Y : parts extracted from the conductor side. � �
f
32KOUT
1
32 kHz OUTPUT CONTROL
: internal component. : Pattern from the side which enables seeing.
COMPARATOR W COMPARATOR
ALARM W REGISTER (WEEK, MIN, HOUR) ALARM D REGISTER (MIN, HOUR)
VDD
Caution: Pattern face side: (SIDE B) Parts face side: (SIDE A) � Lead Layouts
D
10 VDD
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
SCLK 2 ADDRESS REGISTER SO 3 I/O CONTROL SI 4 SHIFT REGISTER
TIMER COUNTER SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR
DIV
DIVIDER CORRECTION
9 OSC 8
OSCIN OSCOUT
ADDRESS DECODER
INTERRUPT CONTROL OSC DETECT
Lead layout of conventional IC
VSS 5 VOLTAGE DETECT
7 6
CE INTR
14
14
 $4.99 ICD-B7 SONY
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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