Subscribe to Our Youtube Channel
Related Manuals for Skyworth 168P-L2L022- W0
Summary of Contents for Skyworth 168P-L2L022- W0
- Page 1 SKYWORTH R&D CENTER Power Supply Service Manual : 168P-L2L022- W0 PART NO. DESCRIPTION ： VERSION NO. ： ： PAGE DESCRIBED ： Wang Min ： CHECKED Yang Jitao APPROVED ： Bao Xiaojie Released Date: 2014-09-21...
- Page 2 168P-L2L022-W0 Service manual Modification record Modification Edition Record Described Checked Approved date 2014-9-21 First record Wang Min Yang Jitao Bao Xiaojie...
- Page 3 168P-L2L022-W0 Service manual Contents Main contents Page General Description General Introduction of Circuit The main chip description PCB TopOverlay or BottomOverlay Maintenance instructions The information of power supply designer Schematic diagram...
- Page 4 168P-L2L022-W0 Service manual Warning This manual is only used for the experienced service person , and does not apply to the general consumer。The manual does not have warnning or alert for the potential hazards caused of the non-technical personnel attempting to repair this product . Electrical products should be an experienced professional and technical personnel for maintenance and repair ,any other person attempts to maintain and repair the products covered by this manual will likely be seriously hurt or even life-threatening.
- Page 5 168P-L2L022-W0 Service manual 1.2.3 Output ripple and noise Output Voltage Ripple & Noise (Max.) +12V 120mVp-p@25℃; 200mVp-p@-10℃ Note: 1) Measurements shall be made with an oscilloscope with 20MHz bandwidth. 2) Outputs shall be bypassed at the connector with a 0.1uF ceramic capacitor and a 10uF electrolytic capacitor to simulate system loading.
- Page 6 168P-L2L022-W0 Service manual 3. The main chip description The main chip 3.1.1 T he main chip general description The main chip of power supply is the TEA1733T which is produced by NXP corporation.The operating mode is CCM (continuous conduction mode), and the operating frequency is 65KHz. 3.1.2 The chip pin information 3.1.3 T...
- Page 7 168P-L2L022-W0 Service manual 3.1.4 The IC pin description 3.2 The LED driver chip 3.2.1 General description The chip using MP3398A, is a highly integrated and high performance LED driver that optimized for LCD backlight application. 3.2.2 The chip block diagram...
- Page 8 168P-L2L022-W0 Service manual 3.2.3 The chip pin information 3.2.4 The pin description...
- Page 9 168P-L2L022-W0 Service manual...
- Page 10 168P-L2L022-W0 Service manual 4. PCB TopOverlay and BottomOverlay 4.1 The power supply TopOverlay 4.2 The power supply BottomOverlay...
- Page 11 168P-L2L022-W0 Service manual 5. Maintenance instructions 5.1 Common Fault Analysis and Notes 1.No +12V output voltage main chip (U1) If there is no +12V output voltage , we should focus on checking the and judge whether the IC is operating . Monitor its VIN pin and check voltage is normal or abnormal . If it is normal , firstly , check the main chip main chip peripheral circuit .
- Page 12 168P-L2L022-W0 Service manual 5.3 Port and the connection defined 5.3.1 PIN10 CN2 Connection And Function Pin Connection Function BL_ON/OFF +12V +12V DC OUTPUT +12V +12V DC OUTPUT Note: CN2 TYPE : 2.5mm 5.3.2 PIN10 CN3 Connection And Function Pin Connection Function LED+ LED+ OUTPUT...
- Page 13 50cm. The storage period is about two years, more than two years should be re-tested under the regulation . 6.Information of Power supply designers Team Ⅱ Power Supply,R&D Center Yang Jitao and Wang Min yangjitao@skyworth.com Email： wangmin@skyworth.com...
- Page 14 BEAD IN5397 IN5397 68UF/450V 392/630V 100KΩ 2W IN5397 IN5397 47R/1206 470pF/1KV +12VA 47R/1206 5Ω IN4007 700nH TRANSFORMER 10A 100V +12V BEAD 1N4007 1N4007 1N4148W 10R 1/8W 10A 100V 10A 700V 470UF/25V 470UF/25V 220nF 470pF/1KV 220K/1206 3.3V 470UF/25V 470UF/25V 10R 1/8W 120KΩ...
Need help?
Do you have a question about the 168P-L2L022- W0 and is the answer not in the manual?
Questions and answers