445545

Daewoo DSJ5510 Manual

16
Zoom out
Zoom in
Previous page
1/97
Next page
15
Explanation for circuit operation
No. Position Kind Purpose Current Remark
1 T802 200V CRT AMP B+ 80mA
2 T802 135V HIGH VOLTAGE B+ 900mA F/B LINE
3 T802 12V GENERAL PURPOSE 600mA
4 T802 9V GENERAL PURPOSE 1000mA
5 T802 5V GENERAL PURPOSE 400mA
6 T802 5V GENERAL PURPOSE 750mA
7 T802 6.3V HEATER B+ 650mA
8 T803 +25V SUB-DY AMP B+ 900mA F/B LINE
9 T803 -25V SUB-DY AMP B+ 900mA
10 T803 30V GENERAL PURPOSE 100mA
11 T803 +7.5V GENERAL PURPOSE 100mA
12 T803 -12V GENERAL PURPOSE 300mA
13 T803 +15V AUDIO AMP B+ 2000mA
14 T803 -15V AUDIO AMP B+ 2000mA
15 T801 5V STAND-BY B+ 500mA
No. Position Kind Purpose Current Remark
<Table 1-1> The second power supply
< TABLE 1-1 > The second power supply
2-4 Explanation for power supply operation
1) Power supply and STAND-BY power
The voltage via a bipolarity power code (PC801) goes through a line filter area composed of
EMI filter (L801, L802, L827), X-capacitor (C801, C802, C803) and Y-capacitor (C804,
C805), is rectified and smoothed (C-806) in bridge diode (D801 -D804).
This voltage provides a power for STAND-BY trans (T-801) and TOP232P of STAND-BY
power IC (I801) and the second TRANS supplies a STAND-BY power for U-COM.
2) Main power start
When the U-COM supplies a PWR SWITCH ON signal for Q801 base via PA802 connector, a
positive terminal relay (RLY1) starts and AC power is rectified and smoothed (C809, C816) in
a bridge diode (D-808) via a Y-capacitor (C-811, C812).
The voltage before smoothing supplies a starting voltage for No.4 terminal of STR-F6656
(I802, I803) via (R809+R817) and (R823+R824).
When STR-F6656 starts, the voltage via a coil bead (L825, L826) goes to coil P of trans and
then to drain (Pin No.3) of internal power MOSFET of STR-F6655. The voltage flowing in coil
D supplies a power for terminal No.4 of trans STR-F6656.
Then, a current flows via R813 and R818 without going through (R809+R817) and
(R823+R824). That is, (R809+R817) and (R823+R824) supplies a current only at starting.
3) Specification of STR-F6656
The STR-F6656 is a power MOSFET and control IC built-in Fly-back type of Hybrid IC for
switching power.
The feature of this IC is a Quasi-Resonance associated operation IC that the number of parts
added to external is small, various protection functions (protection from overcurrent,
overvoltage and overheat) are offered and a power loss decreases by lowering an originating
frequency at STABD-BY.
… 16 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Daewoo DSJ5510 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Daewoo DSJ5510 in the language / languages: English as an attachment in your email.

The manual is 9,85 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info