CASIO EX-259B Repair Manual

$7.99

CASIO EX-259B - It's a complete service manual, and it's in PDF format. It contains circuit diagrams ( schemas ) etc. It also usually contains parts catalog. After placing order we'll send You download instructions on Your email address. See below for delivery information

The manual is available only in language(s): English

Link to manual will be sent on Your email address after You place order.

This product was added to our catalog on Tuesday 15 April, 2008.

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Mark Tarkett -

Excellent service, good price, products are excellent. Will do business with this vendor again.

Ernst-Guenter Hoffmann - 11/16/2007

Many thanks for the fast and easy delivery. When looking for a manual next time you will be my number one. Ernst, from good old Germany

Anny ROY - 04/06/2007

Super fast service and document of excellent quality. Thanks

Henry Seiden - 02/26/2009

I downloaded this product and looked through it quickly with Adobe Reader v9. It is clean and a good copy. Some scanned pages are not perfectly square, but that is a minor complaint. The document schematics and board diagrams are easy to read, of good contrast. The whole file downloaded quickly. This is a good service! Sony charges about $100 for the printed version of the same manual. It is still available through their print-on-demand pro parts system, but why would you do that?

vedat kaya - 07/18/2008

i got my service manual for philips vr685-02. Thanks a lot for my very clear and net service manual. I will continue shopping from user-manual.com.

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Click to see text excerpt from the manual

6. CIRCUIT EXPLANATION
6-1. Power supply circuit
F1D21SR35-100A
1SR35-100A
D1
?F50WV
2
50F2S683J
CN1C4
5277-02A
1C13300
D4
FROM TRANSFORMER1SR35-100A
D3
1SR35-100A
25789
1WITH HEATSINK

OSH-1625-SPPWD
2SD1196
VP 24V
Q1LM2575T-5.0
ZD3VIN 15 ON/OFF
VINVOUT
R121K5.1K2OUTPUT10
3RD16EB34FEEDBACK
R8820Q3IC1
R14GND
47~63KHz
Q2R7100K3D711
2SC46401S2473
D9GNDMCDR1419-681K
4VLED 5.6V
2SC46401S2473L1
F50WV
1?C612
D8D11
C9
C103C8VCC 5.0V
C5R132.7K1S2473
R1510K
ZD2RD7Ã¡5EB350RE2-47RK-1425RE2-330GNDP
GND
6
Q1 : Transistor for controlling voltage (VP)
Q2 : Transistor for voltage detection
Q3 : Transistor for controlling power down (PWD) signal
ZD2 : Zenner diode for controlling base current of Q2
ZD3 : Zenner diode for detecting power down (PWD) signal
After plugging the AC cord into the outlet, the AC voltage (23.8 V) appears at CN1 connector.
Then this voltage is rectified by the diode bridge and it become constant voltage through the capacitor
C1.
[Voltage VP]
A constant voltage (31.4 V) appears on the "2" position. This voltage made from the constant
voltage circuit consist of transistor Q1 and Q2, zener diode ZD2, resistor R7, R8, R12 and R13.
[Voltage VLED and VCC]
The voltage goes to pin No.1 of regulator IC1 and then it is out from pin No.2 of IC1 as stable
voltage (5.6 V).
Then this voltage falls down to 5 volts through the diode.
It is used for VCC (for logic) and VLED (for display drive).
Also, it goes to pin No.4 of IC1 and using to control the output voltage level.
Inductor L1 is used to stabilize the VCC voltage when the drawer opened.
N 9 N