If the wires are pressed cause short and may • Do not modify original design without obtaining written burn or take fire. permission from IBM or you will void the original parts and labor guarantee. TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.
OPERATING INSTRUCTIONS Rear Control Panel Side Jacks 1. Microphone Jack An external microphone can be used instead of the preinstalled microphone. 2. Headphone Jack A headphone jack that automatically mutes the speaker volume when headphones plugged in. Rear Panel Jacks 3.
USB Control Panel Side Jacks USB HUB Jacks External USB 1.1 low power devices such as keyboards and mouse can be connected to these ports. Rear Jack USB Devices Jack Connects the USB HUB to the computer system Downstream port. Universal Serial Bus (USB) is an innovation that conveniently connects different devices to your computer.
Using the USB (Universal Serial Bus) HUB Featuers Connecting USB devices 1. Insert the USB cable into the square USB connector of the Speaker/USB HUB Option as shown is the diagram on the left. Then, insert the other end of the USB cable into the rectangular USB connector on a USB-compliant computer or USB hub as shown in the diagram on the right.
DESCRIPTION OF BLOCK DIAGRAM 1. USB(Universal Serial Bus) Circuit This circuit consists of USB hub IC(TUSB2046B), and over voltage protector IC(TPS2042ADR). This circuit is used to expand four ports of down stream for your easy using of low power device such as keyboard, mouse and etc.
TROUBLESHOOTING GUIDE 1. AUDIO NO POWER POWER INDICATOR OFF CHECK TROUBLE BUILT 12V DC? IN POWER CHECK TROUBLE IN CHECK U5 OUTPUT VR1? (5V) ? TROUBLE IN U5 CHECK Q1,Q2 ? TROUBLE IN Q1, Q2 TROUBLE IN LED1 - 9 -...
2. NO VOLUME CONTROL CHECK TROUBLE IN U5 (5V)? CHECK VR1? TROUBLE IN VR1 TROUBLE IN U3 TROUBLE IN R3, R6, R9 3. AUDIO NO OUTPUT CHECK TROUBLE CHECK U3 PIN 4, 9 IN U3 J4 AND PC? AUDIO IN? CHECK CHECK TROUBLE...
4. USB NO OPERATING CHECK TROUBLE IN J106 PIN1? CHECK TROUBLE IN L102, L103 L102, L103 CHECK U101 OUTPUT TROUBLE IN U101 (3.3V)? CHECK TROUBLE IN X101 X101? CHECK TROUBLE IN U103 U103? - 11 -...
CHECK TROUBLE IN U110 U110? TROUBLE IN CHECK J101, J104 J101, J104? TROUBLE IN DEVICE - 12 -...
REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2002. 04. 23. DATE: 2002. 04. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.