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Sharp PN-K321 Service Manual
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Sharp PN-K321 Service Manual

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CHAPTER 1. OUTLINE OF THE PRODUCT ······················································· 1-1
CHAPTER 2. INSTALLATION,ADJUSTMENT,SETTING ··································· 2-1
CHAPTER 5. FIRMWARE UPDATE PROCEDURES ·········································· 5-1
CHAPTER 6. DISASSEMBLY AND ASSEMBLY ················································ 6-1
CHAPTER 7. TOROUBLESHOOTING ································································ 7-1
CHAPTER 8. HARDWARE DESVCRIPTIONS ···················································· 8-1
Parts marked with "
are important for maintaining the safety of the set. Be sure to replace these
!"
parts with specified ones for maintaining the safety and performance of the set.
SHARP CORPORATION
SERVICE MANUAL
MODEL PN-K321/K321H/K322B/K322BH
CONTENT
CODE: 00ZPNK321SM2E
LCD MONITOR
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

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Summary of Contents for Sharp PN-K321

  • Page 1: Table Of Contents

    SERVICE MANUAL CODE: 00ZPNK321SM2E LCD MONITOR MODEL PN-K321/K321H/K322B/K322BH CONTENT CHAPTER 1. OUTLINE OF THE PRODUCT ······················································· 1-1 CHAPTER 2. INSTALLATION,ADJUSTMENT,SETTING ··································· 2-1 CHAPTER 3. INPORTANT INFORMATION FOR SERVICING THE DISPLAY ··· 3-1 CHAPTER 4. SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES ······· 4-1 CHAPTER 5.
  • Page 2 LEAD-FREE SOLDER The PWB’s of this model employs lead-free solder. The “LF” marks indicated on the PWB’s and the Service Manual mean “Lead-Free” solder. The alphabet following the LF mark shows the kind of lead-free solder. <Solder composition code of lead-free solder> Solder composition Solder composition code Sn-Ag-Cu...

  • Page 3: Chapter 1 Outline Of The Product

    LOW POWER: 0.5 W As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units.
  • Page 4 When mounting the monitor, be sure to use a wall-mount bracket that complies with the VESA-compatible mounting method. SHARP recommends using M6 screws and tighten the screws. Note that screw hole depth of the monitor is 3/8 inch (10 mm). Loose mounting may cause the product to fall, resulting in serious personal injuries as well as damage to the product.
  • Page 5 When mounting the monitor, be sure to use a wall-mount bracket that complies with the VESA-compatible(200x200pitch) mounting method. SHARP recommends using M6 screws and tighten the screws. Note that screw hole depth of the monitor is 3/8 inch (10 mm). Loose mounting may cause the product to fall, resulting in serious personal injuries as well as damage to the product.
  • Page 6 *6 The signals for the left and right screens are both 1920 x 2160 signals. All are compliant only with non-interlaced. Depending on the connected PC, images may not be displayed properly even if the compatible signal described above is input. PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 4...
  • Page 7 This function can be used if the computer supports DDC and it has been configured to detect plug-and-play monitors. There are several types of DDC, depending on the communication method used. This monitor supports DDC2B. PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 5...
  • Page 8 Vertical sticker (Blank): 1 Cover Sharp logo: 1 Horizontal sticker (Operation buttons): 1 Place this sticker onto the SHARP logo to cover the logo. Cover Sharp logo: 1 * Sharp Corporation holds authorship rights to the Utility Disk Place this sticker onto the SHARP logo to cover the logo program.
  • Page 9 TMDS data 1 shield Aux+ TMDS data 1- MainLane TMDS data 0+ DDC/CEC GND MainLane 1- Aux- TMDS data 0 shield Hot-plug detection TMDS data 0- Hot-plug detection MainLane TMDS clock+   MainLane 0- 3.3V PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 7...
  • Page 10 Brightness adjustment button () PC/AV HDMI 2 input terminal [VOL+/] button DisplayPort input terminal [VOL-/] button Audio input terminal [MENU/ENTER] button Headphone terminal [INPUT/RETURN] button AC input terminal USB input terminal(for service) PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 8...
  • Page 11 PC/AV HDMI 2 input terminal Brightness adjustment button () DisplayPort input terminal [VOL+/] button Audio input terminal [VOL-/] button [MENU/ENTER] button USB (mini-B) port Headphone terminal [INPUT/RETURN] button USB terminal (for service) PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 9...
  • Page 12 HDMI2 input image will appear on the right. • The two HDMI1 and HDMI2 video signals must be output from the same device. • The screen size can be set. • Audio, follow the HDMI1 to the "Audio Settings". PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 10...
  • Page 13 With some software, there may be noise or distortion at the edges of the screen. This is due to the characteristics of the software, and is not a malfunction. • Depending on the original image size, black bands may remain at the edges of the screen. PN-K321/K322B OUTLINE OF THE PRODUCT 1 - 11...

  • Page 14: Chapter 2. Installation,Adjustment,Setting

    • Mounting the monitor on the wall requires special expertise and the work must be performed by an authorized SHARP dealer. You should never attempt to perform any of this work yourself.
  • Page 15 •To reduce the risk of injury and damage caused by the product toppling or falling in an earthquake or similar situation, take measures to prevent toppling and falling. • If the wall or platform on which the monitor is installed is not PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 2...
  • Page 16 • The length of the signal cables or surrounding environment may affect the image quality. • Video output is disabled in the following cases: When the power is turned off When the monitor is in input signal waiting mode PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 3...
  • Page 17 When clamping the AC adapter cable, take care not to stress the terminal of the AC adapter cable. Do not bend the AC adapter cable excessively. ・Landscape ・Portrait (Caution) • Do not fasten the supplied AC adapter to the monitor or other equipment. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 4...
  • Page 18 The cables connected to the rear of the monitor can be bound using the cable clamp on the stand. • Landscape • Portrait (Caution) • Do not forcibly bend or apply force to the cables. Risk of wire breakage or other damage. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 5...
  • Page 19 * If the monitor will be used in the portrait orientation, pull out the fixing pin (1), and insert it into the hole (2) as shown above. * To remove the stand, place the monitor and stand as shown above and remove the screws. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 6...
  • Page 20 • Adjust to an angle that is easy to view. (Caution) • When moving the monitor, be sure to grasp only the frame. Grasping and applying pressure to the LCD panel may damage • Take care not to pinch your fingers. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 7...
  • Page 21 *3 Select the terminal for AUDIO SELECT which is used for audio input. (See page 20.) *4 Same as the HDMI1 terminal setting. *5 Same as the AUDIO SELECT of HDMI1. In a menu screen, returns the cursor to the previous screen. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 8...
  • Page 22 ● ● ● ● ● ● ● ● C.M.S.-HUE -10 to 0 to +10 ● ● ● -10 to 0 to +10 ● ● ● -10 to 0 to +10 ● ● ● PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 9...
  • Page 23 ● ● ● ● FULL PC HDMI,D SUB LIMITED ● ● ● ● ● ● ● FULL [RGB]→ RESET ● ● ● ● ● ● ● ● ● ● ● ● ● ● PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 10...
  • Page 24 ● RESET *K322B only RESET MARK DISPLAY TOUCH 5S/ALWAYS ● ● ● ● ● ● ● *K322B only MARK DISPLAY CHANGE RIGHT/BOTTO RIGHT ● ● ● ● ● ● ● DISPLAY POSITION M/LEFT/TOP PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 11...
  • Page 25 ● ● LEFT ● ● ● ● ● ● MUTE AUDIO ● ● ● ● ● ● ● ● ● ● ● ● ● ● INFORMATION ● ● ● ● ● ● ● PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 12...
  • Page 26 BAUD RATE ENTER （ Adjust with  and ） ENTER TOUCH OUTPU T SETTING K322B only （ Adjust with  and ） ENTER DisplayPort STREAM （ Adjust with  and ） DisplayPort STREAM PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 13...
  • Page 27 （Adjust with  and ） POWER MANAGEMEN T （Adjust with  and ） SIZE （Adjust with  and ） 4069 DISPL AY POSITION （Adjust with  and ） MUTE AUDIO （Displayed by ENTER ） INFORM ATION PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 14...
  • Page 28 ON 1....Shows all menus, modes and messages. ON 2....Hides messages automatically displayed by the display. Shows messages during operation. OFF....Hides all menus, modes and messages. Specifies whether to light the power LED. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 15...
  • Page 29 • If TEMPERATURE ALERT or STATUS ALERT is set to OSD & LED, alert messages will appear even if the OSD DISPLAY is set to ON 2 or OFF. • If TEMPERATURE ALERT or STATUS ALERT is set to LED or OSD & LED, the LED lights even if the LED function is set to OFF. PN-K321/K322B INSTALLATION, ADJUSTMENT, SETTING 2 - 16...

  • Page 30: Chapter 3. Inportant Information For Servicing The Display

    SETTING VALUE →Refer to “10. GAMMA SETTING PROCEDURESWITH THE OSD” This information is included in user operation and system information. SYSTEM LOG INFORMATION →Refer to “ 14.OPERATING MANUAL OF THE LOG TOOL“ PN-K321/K322B IMPORTANT INFORMATION FOR SERVICING THE DISPLAY 3-1...
  • Page 31 3) Reset the GAMMA set value. 4) Reset the system log and the temperature log information. → Refer to “5-4 SYSTEM LOG AND TEMPERATURE LOG INITIALIZATION” → Refer to “14-8. OTHER FUNCTIONS” PN-K321/K322B IMPORTANT INFORMATION FOR SERVICING THE DISPLAY 3-2...
  • Page 32 4. Set USAGE TIME. → Refer to “6-4. USAGE TIME SETTING FUNCTION” → Refer to “13. USAGE TIME SETTING PROCEDURE” 5. Set GAMMA. → Refer to “10. GAMMA SETTING PROCEDURES WITH THE OSD” PN-K321/K322B IMPORTANT INFORMATION FOR SERVICING THE DISPLAY 3-3...

  • Page 33: Chapter 4. Service Menu/Various Setting Tool Operating Procedures

    3) Adjust it with the [BRIGHT- ()] [BRIGHT+ ()] button. When the item with => mark press [ENTER] button and advances to the next screen. 4) Press [INPUT/RETURN] button to terminate the operation. PN-K321 SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 1...
  • Page 34 [BRIGHT+ ()] button. 2) Select setting item with [VOL+ ()] [VOL- ()] button. 3) Press [ENTER] button and advances to the next screen. 4) Press [INPUT/RETURN] button to terminate the operation. PN-K321 SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 2...
  • Page 35 [Other] menu. AGING1 is directly executed by pressing [VOL- ()], [VOL+ ()], [VOL- ()], and [VOL+ ()] buttons in sequence. *The power button of the machine cannot terminate aging. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 3...
  • Page 36 （It includes USAGE TIME, Operation log, and Error log） ALL RESET Used to reset the user adjustment values, the usage time, and the operation logs to the factory setting. （It excepts USAGE TIME, Operation log and Error log） PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 4...
  • Page 37 1554- 2331 SYSTEM POWER2 DCIN 1201- 1801 SYSTEM POWER3 MAIN 12V 1554 - 2331 SYSTEM POWER4 BU 5V 1493 - 2239 BAVKLIGHT LED MODULE TOUCH SENSOR TOUCH SENSOR *K322B only PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 5...
  • Page 38 In addition, when "NG" judgment is made once, "NG" state is maintained until the power is turned OFF/ON. Even if, therefore, the target value is reduced below the threshold value, the judgment may be "NG" with a normal value. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 6...
  • Page 39 If "RETURN" is pushed, the changed figures won't be written. <MEMO> The tailing blank columns are trimmed when the figures are written. Meanwhile, the blank columns among the figures are written as spaces. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 7...
  • Page 40 [ENTER] button.The initializing process starts. If you select “OFF” and press [ENTER] or [RETURN] button, the screen goes back to the previous one. The cursor is placed on “TEMP LOG INITIALIZE”. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 8...
  • Page 41 5 ) If preservation is successful, it will return to SERVICE MENU. The file of [XXprop_(model name)_(serial number)_(time).bak] is created by the root directory of a USB Flash Drive. 6 ) The following OSD is displayed when writing goes wrong. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 9...
  • Page 42 - Restoring has failed. When the data of a file which it tried to read is inaccurate and it is or file reading failure - Restoring has failed. System will be restarted PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 10...
  • Page 43 ■ Confirmation of the service tool version 1 ) Boot the launcher tool, and check the service tool version which is displayed at the right upper side of the screen. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 11...
  • Page 44 Main Firmware Write firmware in the display by RS-232C. Sub Firmware Write Sub firmware in the display by RS-232C. Make Usb Data Copy firmware data for USB memory to specified folder. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 12...
  • Page 45 B: 367 CANCEL RESET R: 577 G: 563 B: 554 R: 764 G: 751 B: 738 R: 892 G: 876 B: 859 R: 1020 G: 998 B: 976 CANCEL RESET PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 13...
  • Page 46 12) Check to confirm that all the set values are set properly. 13) Read the set data of WHITE BALANCE and check to confirm that all the values are properly set. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 14...
  • Page 47 < > LEVEL6 < > CANCEL RESET 8 ) Select “OK” with [BRIGHT- ()] [BRIGHT+ ()] buttons, and press [ENTER] button. The display returns to the WHITE BALANCE SETTING menu. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 15...
  • Page 48 * The conversion cable for RS-232C connection is necessary. RS-232C cable Straight cable (D-SUB 9 pin female - female) RS-232C input terminal To COM port RS-232 straight cable (commercially available) PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 16...
  • Page 49 Check if it is the right data, and perform the writing once again. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 17...
  • Page 50 7 ) Memorize the set values of VAL1 - VAL5. 8 ) Select [CANCEL] with [VOL+ ()], [VOL- ()],[BRIGHT- ()] [BRIGHT+ ()] buttons, and press [ENTER] button. The GAMMA SETTING menu is closed. DEFAULT VALUE PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 18...
  • Page 51 10) Select [OK] with [BRIGHT- ()] [BRIGHT+ ()] buttons, and press [ENTER] button. GAMMA SETTING menu is closed. 11) Read the GAMMA setting values to check that all values are properly set. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 19...
  • Page 52 Check again and perform writing again. ■WHEN REPLACING THE PANEL OR WHEN THE OLD PWB <READING PROCEDURES OF THE SETTING> PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 20...
  • Page 53 WHEN “THIS MONITOR IS NOT SUPPORT. IS XXXX PROCESSING CONTINUED?” IS DISPALYED: ・ The tool connected to the display does not support the display. Use a tool which supports the display. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 21...
  • Page 54 RS-232C input terminal To COM port RS-232 straight cable (commercially available) 11-2. START-UP OF THE SERIAL NUMBER SETTING TOOL Press [Serial Number] button of the Service Tool Launcher. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 22...
  • Page 55 . RS-232C input terminal To COM port RS-232 straight cable (commercially available) 11-2. START-UP OF THE SERIAL NUMBER SETTING TOOL Press [Serial Number] button of the Service Tool Launcher. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 23...
  • Page 56 RS-232 straight cable (commercially available) sequence with pointing the cursor to the [Other] menu. 12-2. START-UP OF THE USAGE TIME SETTING TOOL Press [Usage Time] button of the Service Tool Launcher. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 24...
  • Page 57 , and check the model name. RS-232C input terminal To COM port RS-232 straight cable (commercially available) 13-2. START-UP OF THE MODEL NAME SETTING TOOL Press [Model Name] button of the Service Tool Launcher. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 25...
  • Page 58 Press [InfoDisp Report] button of the Service Tool Launcher. Select the model for obtaining the log, and press [OK]. 2 ) After completion of the setting of “1)” press [Get Logs] button. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 26...
  • Page 59 CSV format. In case the data “Information” as “[Width] x are read in Excel etc., store the data in HTML format. [Height] @ [Refresh rate]” or “No Signal”. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 27...
  • Page 60 It is possible to read and display the files saved in the USB Flash Drive. ■Save logs 1 ) Push [Create Report] to save logs in file. 2 ) Following window appears, then specify the file name and push [Save] button. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 28...
  • Page 61 “Signal change,” and “Operation” are not revised in order to maintain the analysis information at occurrence of the abnormality. In such a case, clear the logs with this function. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 29...
  • Page 62 ・ Check the power status of the information displayed which is connected. ・ Check to confirm that the PC and the information display are properly connected with an RS-232C cable. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 30...
  • Page 63 WHEN “THIS MONITOR IS NOT SUPPORT. IS XXXX PROCESSING CONTINUED?” IS DISPLAYED: ・ The display which is connected is not supported by this tool. Use a tool which supports the displayed connected. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 31...
  • Page 64 Limitation: - In using touch pen, pen-writing with a hand on the screen is allowed. But at a point near from the area attached the hand, pen-writing may fail. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 32...
  • Page 65 Due to the gap between tip of the pen and LCD panel (including glass layer and air space), the actual touch position and the position where the human eyes recognized touched may differ. Therefore, the deviation toward X-axis and Y-axis should be checked respectively. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 33...
  • Page 66 2.Check the gap of Y-axis component. See from the direction rotated 90 degrees and check whether touch position is settled between blue parallel lines. ※ To clear all drawn lines, press "C" key. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 34...
  • Page 67 -> go to Drawing Check Click “No” button, if failing the test of X or Y-axis gap. -> go to Calibration Touch Position Click “Cancel” button, to quit TC Adjustment. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 35...
  • Page 68 In that case, touch the cross again. If the color of the cross changes to green without touching the center of the cross properly, press ESC key and try again. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 36...
  • Page 69 To clear all drawn lines, press "C" key. [OK and NG Example] 3)Press "ESC" key to end the tool. The touch panel is defective if the result is “NG”. In that case, replace the panel. PN-K321/K322B SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES 4 - 37...

  • Page 70: Chapter 5. Firmware Update Procedures

    Data in the Sub Firmware Software Explanation Touch Panel Firmware of the touch panel controller board Firmware IC. Will make the control of the touch panel. With only write using a USB memory, you can update. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-1...
  • Page 71 Finished updating software. Finished updating software The updated software is as follows. The updated software is as follows. Main 1 : Ver.1.00 Main 2 : Ver.1.00 Sub : Ver.1.00 END…[RETURN] PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-2...
  • Page 72 1. Turn off and on the power. 2. It takes about one minute to communicate to the monitor. Wait about one minute. 3. Press [BATCH2] button after one minute and the updating is started. (Don’t press [BATCH3].) PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-3...
  • Page 73 ■ CHECK METHOD BY THE FIRMWARE UPDATER The current firmware version can be checked by pressing [VERSION] button when the monitor power lamp is lighted in green. The check sum can be also checked by pressing [CHECK SUM] button similarly. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-4...
  • Page 74 "in use", selection is possible when not displayed in and LPT)" is displayed. "a port (COM and LPT)." 6) Choose "yes", when the following dialog is displayed. Setup of a communication port is completed above. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-5...
  • Page 75 Setup of a communication port is completed above. 3) By the COM port currently used, it right-clicks and a "property" is chosen, on the property screen of communication port, a "Port Settings" tab is chosen and a "Advanced" button is pushed. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-6...
  • Page 76 1) Press the [Sub Firmware] button of the Service Launcher. 2) Select the COM port to be used for communication and input the transfer rate specified with the Information Display. (In the right illustration, [COM1: 38400bps] is selected.)…1 PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-7...
  • Page 77 [BRIGHT- ()], [BRIGHT+ ()], [BRIGHT- ()] and [BRIGHT+ ()] buttons in sequence with pointing the cursor to the [Other] menu. After confirming the version, press the [INPUT/RETURN] button to close the SERVICE MENU1 window. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-8...
  • Page 78 (5) If the file with same name exists, the following dialogue is Input a picture signal to see you set up "other-power displayed. Select "Yes to All" to overwrite the data. management" for "not carrying out." PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-9...
  • Page 79 OFF/ON. If the screen is not displayed during the update, you can check if the data is read or not by seeing the access lamp of USB flash. 4) If the update using USB flash cannot be performed, please update with RS232C. PN-K321/K322B FIRMWARE UPDATA PROCEDURES 5-10...

  • Page 80: Chapter 6. Disassembly And Assembly

    1. PWB AND WIRING DIAGRAM Parts name Cable name Main cable MAIN IF PWB DC power cable DC-DC PWB LED power cable LED TCON unit LVDS FFC LED DRIVE PWB KEY PWB LED INDICATOR PWB PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 7 – 1...
  • Page 81 1 ) Remove eleven screws (M3 x 6 Cupscrew). CAUTION SCREW TIGHTENING TORQUE ・ 0.4 - 0.6N•m 2 ) Open tewlve pawls at the joint parts of tthe front cover and remove the rear cover. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 2...
  • Page 82 2 ) Remove the four screws (M3 x 6 3W) and remove the Main IF shield . CAUTION SCREW TIGHTENING TORQUE ・ 0.4 - 0.6N•m 3 ) Disconnect seven connectors, two screws (M3 x 6 3W), and remove the Main IF PWB. CAUTION SCREW TIGHTENING TORQUE ・ 0.4 - 0.6N•m PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 3...
  • Page 83 1 ) Refer to [2. REAR COVER] and remve the rear cover. 2 ) Disconnect three connectors, remove four screws (M3 x 6 3W), and remove the LED Drive PWB CAUTION SCREW TIGHTENING TORQUE ・ 0.4 - 0.6N•m PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 4...
  • Page 84 2 ) Disconnect one connector and remove the KEY PWB. 7. LED INDICATOR PWB 1 ) Refer to [2. REAR COVER] and remove the rear cover. 2 ) Disconnect one connector, open two pawls, and remove the LED INDICATOR PWB. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 5...
  • Page 85 1 ) Refer to [2. REAR COVER] and remve the rear cover. 2 ) Disconnect one connector of the speaker cable and remove the speaker cable from the mylers and the clamps . Myler Myler PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 6...
  • Page 86 0.4 - 0.6N•m 10. FRONT COVER 1 ) Refer to [2. REAR COVER] and remve the rear cover. 2 ) Remove the four pawls of the Panel fix angle and remove the Panel fix angle. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 7...
  • Page 87 CHAPTER 6. DISASSEMBLY AND ASSEMBLY 3 ) Remove ten pawls fixing the Front cover and the LCD module. 4 ) Remove ten pawls fixing the Front cover and the LCD module. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 8...
  • Page 88 PWB, AC switch unit, KEY PWB, and LED Indicator PWB. CAUTION SCREW TIGHTENING TORQUE ・ Refer to the each replacement procedure. 3 ) Remove the four pawls of the Panel fix angle and remove the Panel fix angle. . PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 9...
  • Page 89 4 ) Remove ten pawls fixing the Front cover and the LCD module... 5 ) Remove ten pawls fixing the Front cover and the LCD module. * The FFCs (4 pcs) from the LCD-TCON PWB and the core are connected to the LCD module PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 10...
  • Page 90 12. FRONT COVER (WITH TOUCH PANEL) PN-K322B ONLY 1 ) Remove the rear cover. 2 ) Remove six screws(M3 x 6 3W) and remove the VESA angle. 3 ) Remove three places the connector of touch panel flexible. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 11...
  • Page 91 CHAPTER 6. DISASSEMBLY AND ASSEMBLY 4 ) Remove the clamp from the flexible. 5 ) Remove four screws and remove speaker R, operation button, the button fixed angle. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 12...
  • Page 92 6 ) Remove the 1 place connector of cable, open the with 2 claws of, is pulled out an LED indicator substrate. 7 ) Remove the claw of the panel fixed angle of four places, and remove the panel fixed angle. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 13...
  • Page 93 CHAPTER 6. DISASSEMBLY AND ASSEMBLY 8 ) Remove the ten nails that secure the LCD module and the front cover. 9 ) Remove the Front cover. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 14...
  • Page 94 2 ) Remove six screws(M3 x 6 3W) and remove the VESA angle. 3 ) Remove the three places of the touch panel connector flexible, remove the one place the cable connector, remove four screws and remove the touch control board. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 15...
  • Page 95 - VESA angle : EMI sheet A and B need to be removed - Main IF Shield : EMI sheet B and C need to be removed - LVDS cable : EMI sheet D needs to be removed PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 16...
  • Page 96 : ’13.Dec CHAPTER 6. DISASSEMBLY AND ASSEMBLY 15. MYLAR SHEET 1 ) Mylar Sheet described below for the location. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 17...
  • Page 97 : ’13.Dec CHAPTER 6. DISASSEMBLY AND ASSEMBLY 16. CABLE CLAMP 1 ) Cable Clamp described below for the location. PN-K321/K322B　DISASSEMBLY AND ASSEMBLY 6 – 18...

  • Page 98: Chapter 7. Toroubleshooting

    - Main I/F PWB No abnormality found. Check the Key PWB and the related parts listed below for any abnormality - Connection cable Replace the abnormal part. Abnormality found. - Key PWB Replace the Switch PWB. PN-K321/K322B TROUBLESHOOTING 7 - 1...
  • Page 99 :’13/Dec 2. THE DISPLAY DOESN’T SHOW/ DISPLAY ABNORMALITY 3. THE BACKLIGHT DOES NOT LIGHT UP PN-K321/K322B TROUBLESHOOTING 7 - 2...
  • Page 100 Check the number of unit connected (Max. 25 units) units) - Check the Main I/F PWB and the related parts listed below for any abnormality: Abnormality found. - Connection cable Replace the abnormal part. - PWB Replace the Main I/F PWB. PN-K321/K322B TROUBLESHOOTING 7 - 3...
  • Page 101 *1 Implementing countermeasure to defective parts 1: Input of 12V-voltage to the panel 2: Input of 24V-DC 3: Input of 12V-voltage to the speaker 4: Input of 5V-voltage to the Main power supply unit Backlight: LED error PN-K321/K322B TROUBLESHOOTING 7 - 4...
  • Page 102 Is it Open error? Check the log data and specify the type of error. Any problem with installation environment? Replace LED driver PWB unit. Is it thermal shutdown? Ensure a good installation environment. Replace LED driver PWB unit. PN-K321/K322B TROUBLESHOOTING 7 - 5...

  • Page 103: Chapter 8. Hardware Desvcriptions

    The display is composed of the LCD unit (including the LCD-TCON, LED PWB x4), the LED Driver PWB, the LED PWB x4, the main PWB, the key PWB, the LED indicator PWB, the thermistor PWB, the DC-DC PWBN and the AC adaptor. 1-3. LCD UNIT Item PN-K321/321H PN-K322B 32" Class [31-35/64 inch (80.1cm) diagonal] TFT LCD Screen size (Diagonal) Max.
  • Page 104 Frame memory of IC1400 operation IC2400 CPLD This controls the sequence of starting up the power, the power of each part of the machine or each IC. IC2500 Controls the arm microcomputer and the whole system. PN-K321/K322B HARDWARE DESCRIPTIONS 8 - 2...
  • Page 105 :’13/Dec 3. BLOCK DIAGRAM ■ BLOCK DIAGRAM PN-K321/K321H 8 - 3 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 106 PN-K322B 8 - 4 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 107 :’13/Dec 4. CONNECTOR TABLE ■ LCD UNIT ■ MAIN PWB PN-K321 CN No. Pin No. Pin Name Function CN No. Pin No. Symbol Function CN201 Main differential signal AIN0- LVDS data(-) Display Port AIN0+ LVDS data(+) input Main differential signal...
  • Page 108 TMDS clock signal OFL1 Back light PWM signal TMDS clock OFL2 VSYNC (Not-use) CEC signal N.C. HSYNC (Not-use) DDC signal I2C_SCK (Not-use) I2C_SDA (Not-use) DDC signal DDC/CEC GND N.C. +5V power Hot Plug Detect 8 - 6 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 109 LVTX_B_CH1P LVDS data I2C signal LVTX_B_CH1N LVDS data I2C signal LVTX_B_CH0P LVDS data OSD notification signal LVTX_B_CH0N LVDS data LVTX_A_CH4P LVDS data LVTX_A_CH4N LVDS data LVTX_A_CH3P LVDS data LVTX_A_CH3N LVDS data LVTX_A_CLKP LVDS clock 8 - 7 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 110 LVDS data LVTX_B_CH0P LVDS data LVTX_B_CH3P LVDS data LVTX_B_CH0N LVDS data LVTX_B_CH3N LVDS data LVTX_A_CH4P LVDS data LVTX_B_CLKP LVDS clock LVTX_A_CH4N LVDS data LVTX_B_CLKN VLDS clock LVTX_A_CH3P LVDS data LVTX_A_CH3N LVDS data LVTX_A_CLKP LVDS clock 8 - 8 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 111 P1001 D3.3V 3.3V THERM4 Thermistor signal KEY&LED GREEN_LED LED Green signal INDICATOR RED_LED LED Red signal CN2402 KEY SW KEY input signal Non-use connecter CN2403 Non-use connecter CN2404 Non-use connecter ■ LED DRIVER PWB 8 - 9 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 112 KEY4 KEY input signal USB signal Service KEY connecter KEY5 KEY input signal USB 2.0 Type-A connecter KEY6 KEY input signal SHIELD KEY7 KEY input signal SHIELD CN1401 HDMI input TMDS data connecter 1 8 - 10 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 113 BU5V 5V power input BU5V 5V power input LVTX_B_CH4P LVDS data BU3.3V 3.3V power input LVTX_B_CH4N LVDS data MAIN12V 12V power input LVTX_B_CH3P LVDS data LVTX_B_CH3N LVDS data LVTX_B_CLKP LVDS clock LVTX_B_CLKN VLDS clock 8 - 11 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 114 LVDS data LVTX_C_CH1N LVDS data LVTX_C_CH0P LVDS data LVTX_C_CH0N LVDS data LVTX_B_CH4P LVDS data LVTX_B_CH4N LVDS data LVTX_B_CH3P LVDS data LVTX_B_CH3N LVDS data LVTX_B_CLKP LVDS clock LVTX_B_CLKN VLDS clock LVTX_B_CH2P LVDS data LVTX_B_CH2N LVDS data 8 - 12 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 115 5. CIRCUIT DIAGRAM PN-K321/K322H ■ MAIN PWB 8 - 13 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 116 8 - 14 PN-K321/K322B HARDWARE DESCRIPTIONS...
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  • Page 140 PN-K322B ■ MAIN PWB 8 - 38 PN-K321/K322B HARDWARE DESCRIPTIONS...
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  • Page 164 8 - 62 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 165 :’13/Dec 6. PARTS LAYOUT ■ MAIN PWB (Before 2013 November production) <TOP> 8 - 63 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 166 TP1913 C2104 R1546 TP3313 TP3311 TP1512 R3328 TP3373 R3322 R3326 TP3372 R1542 R1541 R3320 TP3389 TP3321 TP3322 B123 R3319 C3315 TP191 TP3323 B124 TP3390 TP192 B107 B110 TP3470 TP108 TP3471 TP3465 R3465 R3464 TP3464 8 - 64 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 167 ■ MAIN PWB (After 2013 November production) <TOP> 1 3 2 1 3 3 1 7 6 8 - 65 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 168 :’13/Dec <BOTTOM> 8 - 66 PN-K321/K322B HARDWARE DESCRIPTIONS...
  • Page 169 :’13/Dec DC-DC PWB PN-K321/K322B HARDWARE DESCRIPTIONS 8 - 67...
  • Page 170 　 8-3 : The block diagrams of "■ BLOCK DIAGRAM - 3. BLOCK DIAGRAM" has been changed. 8-5 : The connector table of PN-K321 MAIN IF PWB has been totally revised. 　 8-62,63 : The layout diagrams of Main PWB in "6. PARTS LAYOUT" have been revised.
  • Page 171 COPYRIGHT○ 2013 BY SHARP CORPORATION All rights reserved. Published in Japan. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic; mechanical; photocopying; recording or otherwise without prior written permission of the publisher.

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