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PDS-ST420-VP Manual 

 
 

1.  Key features 

 

 

Max scanning size---LTR / A4 

 

Scan color or monochromatic (mono) images 

 

900/600/300 dpi scan resolution 

 

Directly save files in JPG or PDF format to microSD/microSDHC card 

 

Supports microSD/microSDHC card up to 32GB 

 

Driver-free for Windows® XP, Windows® Vista™, Windows® 7, Windows® 8, 
and Mac OS® 10.4 or above (direct plug-in, driver installation not required) 

 

2. Functional 

parts 

 
 

 

 
 

 Part 

Function 

USB Interface 

Connect to a computer via USB cable to transfer or view 
files 

Battery Door 

For 4x AA alkaline batteries 

Power On/Off 

Press and hold this key for about 2 seconds to turn power 
on or off 

microSD Card Slot  microSD card storage location 

JPG / PDF   

Select scan file format with JPG/PDF button, JPG/PDF 
mode icon will be displayed on status LCD. 
Time and date selection 

Color/Mono 

Select Color/Mono scan option, 
Color/Mono mode icon will be displayed on status LCD 

Enter Button 

Press this button to confirm changes 

DPI 

Scan resolution setting for High (900dpi) / Medium 
(600dpi) / Low (300dpi); High/Medium/Low resolution 
mode icon will be displayed on status LCD 
Time and date selection 

LCD Screen 

Scanning status display. 

10 

Time Set/Format 

Press and hold button for about 3 seconds to enter Time 
and Date setting mode 
Press this button once to format the microSD card; all 
data will be deleted from the microSD card 

 
 
 
 
 
 
 

3.  Explanation of the status icons 

 

 

Item Function 

Description 

File format

 

JPG/PDF

 

SD card indicator 

    Photos will be stored in microSD card 

Battery indicator 

 Battery is full    

 Empty battery 

Scan color 

COLOR / MONO 

Counting indicator 

Shows scanned files in microSD card 

Scan resolution 

HI: 900 dpi / MI: 600dpi / LO: 300 dpi 

 
 

4.  Using the scanner 

 
4.1 Turn on/off the scanner

 

Press and hold the [POWER] button for about 2 seconds to power on/off the scanner. 

Note:

 The scanner will power off automatically if no scanning action is detected 

within 3 minutes. 

 

4.2 Installing the battery 

1.  Open the battery door. 
2.  Insert 4x AA alkaline batteries into the battery compartment. 
3.  Close the battery door.                                                                                                                                                                                                                                                                          
4.  Press and hold the [POWER] for about 2 seconds to power on the scanner. 
 

 

4.3 Inserting a microSD memory card (not included) 

NOTE: 

You must insert a MicroSD Card (not supplied) to save and store your 

scans. Inserting the MicroSD memory card: 
1.  Turn off the scanner. 
2.  Insert the microSD card into the microSD card slot (with metal pins facing up). 

Gently press in until card is latched and locked in place. The SD card 
indicator 

  must appear on the LCD screen. 

 

 

 

4.4 Time and date setting

 

1.  Press and hold the [TIME SET/FORMAT] button for about 3 seconds to enter 

time setting mode.

 

The LCD status display screen will show “1 ##” (step 1) for 

the year. “##” is a set of numbers that would be changed to correspond to the 
actual time/date setting. The number 1-5 in front of “##” indicates each step in 
the setting. 

 

2.  Press the [JPG/PDF] or [DPI] button to select the current Year. 
3.  Press the Enter button [ 

  ] once to confirm setting. 

4.  Repeat steps 2 and 3 to continue the Time and Date setting process. 

 

Indicator Setting 

1 ## 

Year   

2 ## 

Month 

3 ## 

Date 

4 ## 

Hour 

5 ## 

Minute 

 

5.  After setting the Minute, “5 ##” in step 5, press the [TIME SET/FORMAT] 

button again to complete the Time and Date setting. 

 

4.5  Formatting the microSD/microSDHC memory card 

NOTE: 

All contents on the microSD/microSDHC card will be erased during formatting. 

1.  Insert a microSD/microSDHC card into the scanner with metal side facing up. 
2.  Press and hold the [POWER] button for about 2 seconds to power the   

scanner. 

3.  Press [TIME SET/FORMAT] button once. “F” will display on the LCD screen. 
4.  Press the Enter button [ 

  ] once to format the microSD/microSDHC card. 

5.  The SD card indicator will flash until format process is complete.     

 

4.6 Setting the resolution 

Press the [DPI] button to select High/ Medium/ Low resolution.     
High/ Medium/ Low resolution icon will be displayed on status LCD. 

   

4.7 Setting the scan mode 

Press the [COLOR/MONO] button to select Color/Mono mode.     
Color/Mono icon will be displayed on status LCD. 

 

4.8. Setting the scan format 

Press the [JPEG/PDF] button to select JPG/PDF format.     
JPG/PDF icon will be displayed on status LCD. 

 

4.9 How to scan 

1.  Press and hold the [POWER] button for about 2 seconds to power the 

scanner. SD card indicator 

  must appear on the display. 

2.  The scanner is now in standby mode, set COLOR/MONO, JPG/PDF or DPI if 

necessary 

3.  Align and insert the document face down into the scanner. 
4.  The scanner will start scanning automatically once it detects the document. 

Green LED on the [POWER] button will be lit during the scanning process.

   

 

 

5.  The scanner will stop scanning once it finishes the scan and will return to 

standby mode for another scan. 

NOTE

: Before scanning, please smooth the edges of the document and gently 

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