Page 1 National Library Service for the Blind and Physically Handicapped The Library of Congress Digital Talking-Book Player Models DS1 and DA1 Service Manual Technician Edition...
Page 2 Version 0.994, July 2009 July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 3: Table Of Contents
Table of Contents Cautions and Warnings ................... 3 Electrical Shock Hazard ....................3 Electrostatic Discharge Prevention ...................3 General Information ....................4 General Description ......................4 USB Flash Cartridge ......................9 Abbreviations, Definitions, and Acronyms ..............10 Theory of Operation ....................... 11 Assembly Diagrams ......................13 Digital Talking Book ......................
Page 4 This publication has been prepared by: Engineering Section, Materials Development Division National Library Service for the Blind and Physically Handicapped, Library of Congress Comments and corrections should be directed to: Head, Engineering Section NLS/BPH...
Page 5: Cautions And Warnings
Section 1.0 Cautions and Warnings Electrical Shock Hazard WARNING: Hazardous live conductors are exposed if the player is opened for servicing while the unit is connected to utility power through the mains power cord and plug. If the player is not plugged into utility power during servicing, no hazardous live voltages are present;...
Page 6: General Information
30 minutes of inactivity. There are two models of the digital-talking book player, the Standard Model (DS1) and the Advanced Model (DA1). Features Common to Both Models The Rewind, Play/Stop, and Fast Forward controls are centered and located close to the front edge of the player.
Page 7 General Information Section 1  The square, green Play/Stop button initiates the playing of a book or stops a book or message already playing. Holding this button down on the Standard Player enters and exits the built-in User Guide.  The white, triangular Rewind and Fast Forward buttons to the left and right of the Play/Stop button move the reading position through the book, further in time and book structure the longer the button is held down.
Page 8 General Information Section 1 The cartridge used with the player is about the size of a common cassette, but with a more complex shape. The end of the cartridge with the round finger hole is beveled, so that when that end of the cartridge is pressed down on a flat surface in front of the player, the other end of the cartridge, with the USB Connector, tilts up and can slide smoothly into the player.
Page 9 General Information Section 1 buttons provided the bookmark navigation level has been selected with the Menu button. Pressing this button at a previously set bookmark will remove it. External Connectors Headphone A bright green, circular headphone jack is located on the right side of the player. The player accepts headphones with a 3.5 mm (mini) ring, tip, and sleeve plug.
Page 10 General Information Section 1 Digital Talking-Book Player Specifications Player size 157 mm (6.2 in.) width; 224 mm (8.8 in.) depth; 43 mm (1.7 in.) height Player volume 1.51 l (93 in Player weight 1.15 kg (2.52 lb) Player box size 317.5 mm (12.5 in.) width;...
Page 11: Usb Flash Cartridge
General Information Section 1 USB Flash Cartridge The player plays DTBs stored on USB flash drive cartridges. These cartridges contain a type of solid state memory that is nonvolatile and can be rewritten thousands of times. They are resistant to damage by extremes of temperature, humidity, and other environmental conditions expected to be encountered by patrons and libraries.
Page 12: Abbreviations, Definitions, And Acronyms
General Information Section 1 Digital Talking-Book Cartridge Specifications Cartridge size 57 mm (2.25 in.) width; 95 mm (3.75 in.) depth; 10 mm (0.39 in.) height Cartridge weight 37 g (1.3 oz) Technology USB high speed mass storage device Capacity (unformatted) 512 MB, 1 GB, 2GB, 4GB File system FAT12, FAT16, FAT32...
Page 13: Theory Of Operation
General Information Section 1 Theory of Operation Basic Description The Digital Talking-Book Machine (DTBM) is comprised of several main component blocks. The circuit board is the most complex of these and is the heart of the player. Power for the player is obtained from either the AC power supply or the internal battery pack.
Page 14 General Information Section 1 and by predicting self discharge. This ‘gas gauge’ chip is monitored by the microprocessor to determine when a charge cycle should be initiated. To preserve the service life of the battery, a charge cycle is only started if the remaining capacity is estimated to have fallen to 75 percent of full capacity.
Page 15: Assembly Diagrams
General Information Section 1 Assembly Diagrams Figure 2-5. Standard Player Assembly Figure 2-6. Standard Player Upper Subassembly July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 16 General Information Section 1 Figure 2-7. Advanced Player Assembly Figure 2-8. Advanced Player Upper Sub-Assembly July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 17 General Information Section 1 Figure 2-9. Lower Player Assembly (Common to both models) July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 18: Digital Talking Book
General Information Section 1 Digital Talking Book A digital talking book is composed of a collection of computer files. These files contain the digitized audio content along with information on the book’s structure to permit both random access and linear reading of the material. To play the book, a compatible player requires information on how all the audio files fit together and the location of the book structure elements such as parts, chapters, and optionally page numbers.
Page 19 General Information Section 1 2.6.1.2 Navigation Control File The Navigation Control file (NCX) exposes the hierarchical structure of a DTB to allow the user to navigate through it. The NCX is similar to a table of contents in that it enables the reader to jump directly to any of the major structural elements of the document, i.e., part, chapter, or section.
Page 20 General Information Section 1 SMIL file where the chapter begins. The NCX file will also have a direct pointer to the audio clip that will render the name of the chapter so that the user can quickly locate the navigation point of interest. Both the standard and advanced players use information in the NCX file to report the book title and reading position location.
Page 21: User Operation And Controls
Special Features for Libraries and Technicians Section 4 User Operation and Controls The player responds to user actions by a combination of two processes. The first moves or stops moving the reading position (referred to as navigation) and the second initiates or alters the characteristics (volume, tone, or speed) of the audio rendered by the player.
Page 22 Special Features for Libraries and Technicians Section 4 Play/Stop Primary Pressing the Play/Stop button while the player is stopped starts or resumes playback of the book. Playback resumes from the reading position noted by the player for the current book when playback or navigation last ended.
Page 23 Special Features for Libraries and Technicians Section 4 Rewind Rewind and Fast Forward are the principal means of book navigation for the Standard Model player. The rewind and fast forward behavior of the Standard and Advanced Models are the same; however, users of the Advanced Model will most likely use its other controls to perform most navigation.
Page 24 Special Features for Libraries and Technicians Section 4 Fast Forward Pressing and releasing the Fast Forward (FF) button moves the reading position forward 5 seconds. Pressing and holding the Fast Forward button moves the reading position forward at an accelerating rate. When a chapter boundary is crossed, a beep is heard.
Page 25 Special Features for Libraries and Technicians Section 4 Volume Pressing the Volume Up or Volume Down button adjusts the audio volume. Each press of the control will make one adjustment. There is a total of 45 dB of volume control in 15 steps.
Page 26 Special Features for Libraries and Technicians Section 4 Speed The speed of playback is adjustable using the Speed Up and Speed Down buttons. The speed is adjustable from one half to three times normal. That is to say if a book took a narrator 7 hours to narrate, it would take 2 hours and 20 minutes to render at the fastest setting.
Page 27 Special Features for Libraries and Technicians Section 4 Controls Exclusive to the Advanced Model (DA1) Information Primary Pressing the Information (Info) button gives information on the book and on the player state. Information given for an ANSI/NISO book: Current position in the book (i.e., chapter) Current page number (if pages are marked in the book) Total book time elapsed Total book time remaining (at 1x play speed)
Page 28 Special Features for Libraries and Technicians Section 4 Previous Primary Pressing the Previous (Prev) element button moves the reading position to the beginning of the previous navigation element at the hierarchical level selected by the Menu button (chapter, section, page, bookmark, etc.) The player reacts differently depending on the current navigation level and whether the player is playing the book prior to the Previous element action: Navigation level...
Page 29 Special Features for Libraries and Technicians Section 4 Next Primary Pressing the Next element button moves the reading position to the beginning of the next navigation element at the hierarchical level selected by the Menu button (e.g., chapter, section, page, bookmark, etc.) The player reacts differently depending on the current navigation level and whether the player is playing the book prior to the Next element action: Navigation level...
Page 30: Player Controls Using Assistive Technology Devices
Special Features for Libraries and Technicians Section 4 Bookmark Pressing the Bookmark (Mark) button will insert a bookmark at the current reading position. If the book is playing, pressing the Bookmark button when the reading position is within 5 Mark seconds of an existing bookmark will remove it.
Page 31 Special Features for Libraries and Technicians Section 4 3.2.2 AT Device Learning Mode The player can be instructed as to which controls on the AT device are to operate particular player functions. This assignment is performed through a learning process. Entering AT Device Learning Mode Press and hold for 5 Connect the AT device to the USB port on the side of the player.
Page 32 Special Features for Libraries and Technicians Section 4 3.2.3 USB Joystick Patrons with physical disabilities may find it simpler to move a joystick than to press a button. The two-axis (x,y) USB joystick of a gamepad can be used to control the player. Movements of the joystick to the top-left, top-center, top-right, left, right, bottom-left, bottom-center, and bottom-right positions can be assigned to player controls using the learning mode.
Page 33: Special Features For Libraries And Technicians
Special Features for Libraries and Technicians Section 4 Special Features for Libraries and Technicians This section describes the different levels of error reporting and diagnostics available to personnel involved in lending and servicing players. There are four service levels available: ...
Page 34 Special Features for Libraries and Technicians Section 4 Reset to Factory Default User Settings Resetting the player to factory default user settings:  Erases the saved current position of the books history.  Erases all bookmarks.  Restores the default values for the volume, tone, and speed settings. ...
Page 35 Note: This is the default behavior of the DA; it is only a change in behavior of the DS1. To configure the player for reduced verbosity press the Rewind and Speed Up buttons simultaneously for three seconds, when the player is in “Key Describer Mode.”...
Page 36: Library Service Operations (Via Keypad)
Special Features for Libraries and Technicians (Library Level) Section 4 Library Service Operations (via Keypad) The Library Service level is accessed using only the keypad, with prompts and results rendered as audio announcements. Library-level errors are announced at the time they occur and are recorded for later analysis. Patrons may hear library-level error messages when they occur.
Page 37 Special Features for Libraries and Technicians (Library Level) Section 4 4.1.1 Library-Level Service Message Retrieval Library service functions enable the playback of error messages that have been recorded in the player’s memory. This functionality is expected to be useful for telephone support where librarians may be able to instruct patrons on how to cause error messages to be announced.
Page 38 Special Features for Libraries and Technicians (Library Level) Section 4 Announcement What the Announcement Means The player has not recorded any error codes related to book cartridges. Cartridge OK An error event occurred related to a cartridge (or other device) plugged into the Cartridge USB socket.
Page 39 Special Features for Libraries and Technicians (Library Level) Section 4 Announcement What the Announcement Means 3. In the case of a USB flash memory drive, files contained must be in main directory. The drive may contain a NISO/DAISY/CEA book or individual audio files. Audio files must be in 3GP, MP3, or WAV format (ex: 57739-0003.3gp, 57833-0004.mp3 or P010.wav).
Page 40: Technician Service Operations (Via Keypad)
Special Features for Libraries and Technicians (Technician Level) Section 4 Technician Service Operations (via Keypad) The Technician service level is accessed using only the keypad, with prompts and results rendered as audio announcements. There are two methods to enter the Technician service level. The first is by holding the Rewind, Sleep and Tone Down buttons while turning the player on by pressing the Power button.
Page 41 Special Features for Libraries and Technicians (Technician Level) Section 4 A graphic illustration of menu navigation is provided in section 4.2.3. When the Tecnician service level is entered, the player announces the following information:  Power On beep: The player is booting, memory test is performed. This step may take a few moments.
Page 42 Special Features for Libraries and Technicians (Technician Level) Section 4 4.2.3 Technician Service Level Menu Items Player Status Read Erase Cartridge Test Test Book Test Complete Partial Statistics Report Report Export Export Statistics Keypad Test Test Set Language English Spanish Initiate Statistics Battery...
Page 43 Special Features for Libraries and Technicians (Technician Level) Section 4 Player Status Player error messages stored in player memory Read The player reports the errors saved in the internal memory of the player. At the end of the report the player returns to the current menu item.
Page 44 Special Features for Libraries and Technicians (Technician Level) Section 4 Book Test Problems with a player may sometimes be due to a faulty book structure. This test can be helpful to validate the structure of a book. This test will only work with DAISY 2.02 and NISO books. This test includes only the validation of the book information needed to play the book.
Page 45 Special Features for Libraries and Technicians (Technician Level) Section 4 Statistics Report List of different statistics saved by the player. Refer to the Statistics Table in the Appendix. Note: Information about the following items is not rendered: Number of Key Exchanges Object Key Exchange Object name list Last Service Date Service Comments...
Page 46 Special Features for Libraries and Technicians (Technician Level) Section 4 Keypad Test The Keypad test works like the key describer, except that only short announcements will be reported so the tester doesn’t get bored or disturbed by long repetitive messages. This test will terminate if no key is pressed for 5 seconds.
Page 47 Special Features for Libraries and Technicians (Technician Plus level) Section 4 Battery Battery Settings and Statistics Note: There may be a delay in the proper update of the battery status information, namely after adding, removing, plugging, unplugging or resetting a battery, after plugging or unplugging the player and also after initiating a manual recharge.
Page 48 Special Features for Libraries and Technicians (Technician Plus level) Section 4 Disable Set the player to be used without a battery. If the player is to be used without a battery, and this option is set, error messages related to battery-charge state are not reported to the patron.
Page 49: Player Configuration And Operation With An Xml File
Special Features for Libraries and Technicians (Technician Plus level) Section 4 Player Configuration and Operation with an XML file It is possible to automate some configuration and service operations of the player by using an XML file containing one or more text instructions. The player will examine this file, called options.xml, if present in top most (root) directory of the cartridge or USB drive.
Page 50: Technician Plus Sevice Operation (Via Usb Port)
Special Features for Libraries and Technicians (Technician Plus level) Section 4 Technician Plus Sevice Operation (via USB port) The Technician Plus service level uses a text based interface from a computer or terminal. The computer is connected to the player’s USB AT-device port via a USB to USB null modem cable or a USB to a serial interface cable depending upon the interfaces provided on the computer.
Page 51 Special Features for Libraries and Technicians (Technician Plus level) Section 4 To exit the Technician Plus service level: Type “user” or power off the player. The Technician Plus service level, accessed by a computer, provides some enhanced functionality over the Library level.
Page 52 Special Features for Libraries and Technicians (Technician Plus level) Section 4 4.4.1 Equipment Needed To use the Technician Plus service level you require:  a computer or terminal  a terminal emulator program (HyperTerminal or ZOC for example)  either a USB to USB null modem cable or a USB to serial cable together with a null modem adapter. Only cables using the USB to serial device manufactured by Future Technology Devices International (FTDI) are compatible with the DTBM.
Page 53 Special Features for Libraries and Technicians (Technician Plus level) Section 4 The second method is to press and hold Rewind, Sleep, and Speed Down keys, then press the Power key. You may have the USB cable connected to the player prior to turning the player on or may insert the cable after the key sequence has been pressed.
Page 54 Special Features for Libraries and Technicians (Technician Plus level) Section 4 4.4.4 List of Technician USB Commands Available The commands may be entered in full or with shortcuts. In the following section shortcuts are indicated with parentheses. e.g the ‘sine’ command may optionally be shortened to ‘si’. batt (b) Description: Obtain and modify battery parameters.
Page 55 Special Features for Libraries and Technicians (Technician Plus level) Section 4 help (?) Description: Help on Technician Plus level service commands. help (?) [command] Usage: iMX21 USB NLS> help getgernum GetSerNum: help Description: Get the player serial number. Usage: GetSerNum iMX21 USB NLS>...
Page 56 Special Features for Libraries and Technicians (Technician Plus level) Section 4 reboot (re) Description: Reboot the player. The player exits services mode. reboot (re) Usage: publickey (pk) Description: Print the player’s public instance key as a key exchange object (KXO). public key (pk) Usage: LoC DTB>...
Page 57 Special Features for Libraries and Technicians (Technician Plus level) Section 4 sine (si) Description: Play a square sound waveform to test audio. iMX21 USB NLS> sine 2000 2 100 Play sine: freq = 2000 Hz, dur = 2 sec, amp = 100 iMX21 USB NLS>...
Page 58 Special Features for Libraries and Technicians (Technician Plus level) Section 4 triangle (t) Description: Play a triangle sound waveform to test audio. triangle [<frequency> [<duration> [<amp>]]] Usage: iMX21 USB NLS> triangle 2000 2 128 Play triangle: freq = 2000 Hz, dur = 1 sec, amp = 128 iMX21 USB NLS>...
Page 59: Developer Service Operations (Via Internal Serial Port)
Special Features for Board Level Servicing (Developer level) Section 4 Developer Service Operations (via internal serial port) The Developer service level is accessed using a computer connected, with a separate interface board and serial cable, to the player’s internal serial port (an i.MX21 microprocessor subsystem). The prompts and results rendered as text on the computer terminal screen.
Page 60: Materials
Materials Section 5 Materials Tools and Equipment Tools and Equipment Required for DTB Service Hand Tools  2.5 mm size hex wrench (battery access panel screws)  #1 Phillips head (internal fasteners)  T10 Torx driver (housing fasteners)  Small needle-nose pliers ...
Page 61: Player Checkout Procedure
Player Check-Out Section 6 Player Checkout Procedure Use the following procedure that describes the sequence of inspections and tests required to checkout a player. The player is not opened during this procedure, but it can be followed by a more detailed examination by a technician.
Page 62 Player Check-Out Section 6 Visually inspect player for damage or dirt. (Sec8) Is player dirty? Clean (Sec 8.1) Are there damaged, Replace damaged components (Sec missing or 8.3, 8.4, 8.5, 8.7, 8.10, 8.11, 8.12) loose parts? Connect to AC power Is “Player On”...
Page 63 Player Check-Out Section 6 Test for audio quality (Sec 6.9) Does speaker require Replace upper housing (Sec 8.3) replacement? Check headphone function (6.10) Does the headphone Replace headphone cable (Sec 8.5) connector require replacement? Check AT/Remote function (6.11) Does AT connector Replace AT cable (Sec 8.6) require...
Page 64: General Inspection
Player Check-Out Section 6 General Inspection Note: If there are no serial number labels on the housing of the player, remove the book cartridge and press the sleep button 10 times within 1 minute. The player will announce the serial number along with the number of the software version.
Page 65: Operation On Ac Power
Player Check-Out Section 6 Operation on AC Power Preconditions: No DTB cartridge is inserted in the player. No AT-device or USB flash drive is inserted in the AT device USB port. The AC power cord is not connected to AC mains power. The player is off.
Page 66: Operation On Battery Power
Player Check-Out Section 6 Operation on Battery Power Preconditions: No DTB cartridge is inserted in the player. No AT-device or USB flash drive is inserted in the AT device USB port. The player has a charged (not necessarily fully charged) battery or has been plugged in for a sufficient time to minimally charge the battery.
Page 67: Battery Recharge
Player Check-Out Section 6 Battery Recharge Preconditions: The player has been tested and operates on AC power (see 6.2) The player has been tested and operates on battery power (see 6.3) Methodology: Using the service functions we initiate a recharge and determine if it has started. Plug the player (or keep it plugged) into a power outlet.
Page 68: Battery Condition And Software Version
Player Check-Out Section 6 Battery Condition and Software Version The player records the number of charge cycles the battery undergoes. The service life of the battery is related to this value. The player should be programmed to the latest software version. Preconditions: None Methodology:...
Page 69: Player Statistics
Player Check-Out Section 6 Player Statistics The player saves usage statistics in its non-volatile memory that can be recovered and saved. Preconditions: (if using “technician service level” to perform this function) No DTB cartridge is inserted in the player. An USB flash drive is inserted in the USB AT device port. Methodology: A service function is used to transfer accumulated player statistics to a USB flash drive.
Page 70: Keypad Operation
Player Check-Out Section 6 Keypad Operation Preconditions: No DTB cartridge is inserted in the player. The player is powered on. Methodology: The keypad functionality is assessed by pressing each key in Key Describer mode. Each time a key is pressed, a key identifier is announced. When released, the key should return to the full up position. Note: It is not necessary to listen to the entire key identifier announcement with each key press.
Page 71: Cartridge Operation
Player Check-Out Section 6 Cartridge Operation Preconditions: No DTB cartridge is inserted in the player. The player is powered on. Methodology: A cartridge is inserted into the player and it plays a book without error. This step is intended to confirm that three player functions are operating properly: ...
Page 72: Audio Quality
Player Check-Out Section 6 Audio Quality Preconditions: None Methodology: A cartridge is inserted into the player and the audio is assessed for excessive audio distortion or noise. a) Insert a DTB cartridge into the player. b) Set the tone and speed controls to their normal (mid) setting. c) With the player reading the DTB cartridge, press the Volume Up button until the player announces “Maximum Volume.”...
Page 73: At Device Port Operation
Player Check-Out Section 6 Listen to the audio in both the left and right sides of the headphones. Is the audio present in both sides and is the audio quality good?  The player has is operating correctly using headphones. Yes: Continue to step 3.
Page 74: Player Disposition
Player Check-Out Section 6 6.12 Player Disposition After completion of the checkout procedure, repair items can be performed as marked. The marked Player Checkout Worksheet should accompany the player through troubleshooting and repair. July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 75: Troubleshooting Activities
Troubleshooting Section 7 Troubleshooting Activities WARNING: Hazardous live conductors are exposed if the player is opened for servicing while the unit is connected to utility power through the mains power cord and plug. If the player is not plugged into utility power during servicing, no hazardous live voltages are present, but Safety Extra Low Voltages (SELV) will be present on many conductors inside of the player.
Page 76 Troubleshooting Section 7 CAUTION: The connectors used in the player are designed to latch together. The latch must be released by applying pressure to a tab while separating the connectors. The socket is surface mounted to the pads on the top surface of the printed circuit board.
Page 77 Troubleshooting Section 7 AT USB DC Power Headphone 5 pins (Blue) 2 pins (White) 4 pin (Blue) Battery Speaker 4 pins (White) 2 pin (Blue) Book Cartridge 5 pins (White) Figure 7-3 Color coded connectors The machine screws used to assemble the player have a Blue thread-locking patch to make them resistant to vibration.
Page 78: Open And Close The Player
Troubleshooting Section 7 Open and Close the Player Tools Needed Parts Needed Dock Seal, Upper, 4824591314 Torx T10 driver (Upper Dock Seal) – as needed Note: The player shall not be plugged into a Power Outlet during this procedure. 1) With the player unplugged, position it with the bottom facing up and the Cartridge Dock facing you.
Page 79 Troubleshooting Section 7 To close the player, lift the upper housing and turn it over to the left above the lower housing (like closing a book). Use the fingers of your right hand to gently push the cable bundle into the housing, so that the cables are not pinched as you lower the upper housing.
Page 80: Player Will Not Play On Battery Power, But Will Play On Ac Power
Troubleshooting Section 7 Player Will Not Play on Battery Power, but Will Play on AC Power Potential Causes: Battery Pack failure, Battery Cable failure, Circuit Board failure. Player operates on AC power. Does the player operate on battery ? Does the battery cable Repair cable or connector and connector...
Page 81 Troubleshooting Section 7 Tools Needed 2.5 mm hex wrench Detailed Procedure: 1) Check the battery cable and connector a) Open the Battery Compartment as described in Section 7.1 b) Visually inspect the Battery Cable for broken wires or wires bent to a sharp angle. c) Check that the connector is correctly seated.
Page 82 Troubleshooting Section 7 Press the PLAY/STOP key to select this item. Press the FF key to step through options until the player announces the “Initiate Battery Recharge” option. Press PLAY/STOP to select this option. The player will announce “Battery Recharge Initiated” followed by “Battery”. b) Check the state of the battery recharge function using Technician service level functions as follows: Assuming that the player is still in the Technician service level, Wait at least 5 seconds, then press the PLAY/STOP key to select the “Battery”...
Page 83: Player Will Not Play On Ac Power
Troubleshooting Section 7 Player Will Not Play on AC Power Potential Causes: Power Input Cord, Power Supply, Power Supply Cable, Circuit Board. Player does not operate on AC power. Is AC power cable Replace AC cable (Sec 8.7) damaged? Does the player operate on AC power? Does the dc power supply...
Page 84 Troubleshooting Section 7 Tools Needed T10 Torx driver Multimeter Detailed Procedure: Prerequisite Operation: It is assumed that a hard reset (Sec. 3) has been attempted. 1) Open player as described in Section 7.1 and check AC power cable: a) Visually inspect the Power Supply AC wiring for damage. If cable or connector is damaged: ...
Page 85 Troubleshooting Section 7 4) Verify AC power at power supply: a) Remove the AC mains power, disconnect the AC power female connector from power supply, reconnect the mains plug to the AC power outlet and measure AC voltage at female connector. If approximately AC 110 volts is not measured : ...
Page 86: No Or Distorted Speaker Audio
Troubleshooting Section 7 No or Distorted Speaker Audio Potential Causes: Speaker failure, Connector failure, Circuit Board. Player functions on headphones Is speaker audio OK and distortion free ? Inspect speaker cable and connector (blue 2 pin J2) Is the cable or connector damaged Repair cable or or not correctly...
Page 87 Troubleshooting Section 7 Tools Needed T10 Torx drive #1 Philips head screw driver Second speaker with cable and connector Detailed Procedure: Prerequisite test: Player produces audio via the headphones. 1) Visually inspect the Speaker wiring for damage. a) Separate the player housings as described in Section 7.1 and check for loose connectors and/or damage. If speaker cable or connector (blue 2 pin J2) is loose or damage: ...
Page 88: Cartridge Usb Failure
Troubleshooting Section 7 Cartridge USB failure Potential Causes: Cartridge USB Cable, Circuit Board. Book functions from AT USB Drive Does book play from cartridge USB port? Inspect cartridge USB socket Is the cartridge Clean cartridge connector USB connector contaminated? Open player and inspect wiring and PWB connector (white 5 pin J6) Is cable or connector...
Page 89 Troubleshooting Section 7 Tools Needed T10 Torx driver Flashlight Q-tips and connector cleaner Second Cartridge USB cable Detailed Procedure: Prerequisite test: Player plays a book on the AT USB port Prerequisite Operation: It is assumed that a hard reset (Sec. 3) has been attempted. 1) Visually inspect the cartridge USB connector and cable for damage.
Page 90: At Usb Failure
Troubleshooting Section 7 AT USB failure Potential Causes: AT USB Cable, Circuit Board. Book functions from cartridge USB Drive Does book play from AT USB port? Inspect AT USB socket Is the AT connector Clean AT USB contaminated? connector Open player and inspect wiring and PWB connector (blue 5 pin J5) Is cable or connector...
Page 91 Troubleshooting Section 7 Tools Needed T10 Torx driver Flashlight Q-tips and connector cleaner Second AT USB cable Detailed Procedure: Prerequisite test: Player plays a book on the cartridge USB port Prerequisite Operation: It is assumed that a hard reset (Sec. 3) has been attempted. 3) Visually inspect the AT USB connector and cable for damage.
Page 92: Headphone Failure
Troubleshooting Section 7 Headphone failure Potential Causes: Headphone Cable or Connector, Circuit Board. Audio functions from speaker Is the audio available on headphones ? Inspect headphone connector with flashlight Is the headphone Clean the headphone connector connector contaminated? Open player and inspect wiring and PWB connector (blue 4 pin J1) Is cable or connector...
Page 93 Troubleshooting Section 7 Tools Needed T10 Torx driver Flashlight Q-tips and connector cleaner Second AT USB cable Detailed Procedure: Prerequisite test: Player plays a book on the cartridge USB port Prerequisite Operation: It is assumed that a hard reset (Sec. 3) has been attempted. 5) Visually inspect the headphone connector and cable for damage.
Page 94: Repair Activities
Repair Section 8 Repair Activities CAUTION: he Circuit Board inside the player can be damaged by electrostatic discharge (ESD) when the housing is opened for service. ESD protective handling must be practiced when a player housing is opened. At a minimum, technicians must wear grounded wrist straps and the work surface must be covered with a grounded mat.
Page 95: Battery Replacement
Repair Section 8 Battery Replacement CAUTION: Do not strain the Battery Cable when lifting the Battery pack out. Tools Needed Parts Needed 2.5 mm hex wrench Battery Pack, 4824591310 Foam, Battery Compartment, 4824591316 (as needed) Note: Battery panel screws are captured in the battery access panel by a nylon washer. Loosen them, but do not pull them out of the panel.
Page 96 Repair Section 8 Figure 8-1 Battery Installation 8) Replace the battery access panel and tighten the battery panel screws. 9) Turn the player over. 10) Power off the player before entering the Technician service level. Reset the per-battery statistics. 1) Enter the Technician service level by holding down the REWIND, SLEEP, and TONE DOWN keys and then pressing the POWER key.
Page 97: Upper Housing Service
Repair Section 8 Upper Housing Service (Keypad Cleaning/Replacement and Upper Housing/Speaker Replacement) Tools Needed Parts Needed Keypad, Standard, 4824591201 (Keypad)– #1 Phillips Screwdriver as needed Keypad, Advanced, 4824591251 (Keypad)– Keypad Press Tool (or equivalent) as needed Standard Upper Replacement Subassembly, Torx T10 Driver 4824591202–as needed Materials Needed...
Page 98 Repair Section 8 Separate the player housings as described in Section 7.1. 1) Disconnect the six (6) cables from their connectors on the Circuit Board located in the Upper housing assembly. (Refer to Section 7 for correct Connector Removal Procedure.) 2) Remove the 8 screws that secure the Circuit Board with a #1 Phillips screwdriver.
Page 99 Repair Section 8 8) Dry with a soft cloth. 9) Obtain an Upper Replacement Subassembly if specified by the Player Checkout Worksheet. 10) Place the Upper housing upside down on the work surface with support pads so that the protruding keys will not touch the table.
Page 100: Cartridge Usb Cable Replacement
Repair Section 8 Cartridge USB Cable Replacement Tools Needed Parts Needed Assembly, USB Cartridge Dock, 4824591145 (Cartridge #1 Phillips Screwdriver USB Cable) Small Diagonal Cutting Pliers Cable Ties, 48424591308 Small Needle Nose Pliers Torx T10 Driver 1) Separate the player housings as described in Section 7.1. Note: Examine the installation and routing of the existing Cartridge USB Cable before proceeding.
Page 101 Repair Section 8 Figure 8-3. Over Mold Orientation for Assembly 9) Insert and tighten two Mounting Screws. Important: Ensure that the plastic over-mold is not distorted due to over tightening the screws. 10) Route the Cartridge USB Cable along with the bundle of other Cables. 11) Connect the White Cartridge USB Cable Plug to the White J6 Socket marked “Book”...
Page 102: Headphone Cable Replacement
Repair Section 8 Headphone Cable Replacement CAUTION: Gently remove the overmolded connectors from the housing to avoid breaking the thin plastic edges. Tools Needed Parts Needed Assembly, Headphone Jack, 4824591150 (Headphone Small Diagonal Cutting Pliers Cable) Small Needle Nose Pliers Cable Ties, 48424591308 Torx T10 Driver Headphone...
Page 103 Repair Section 8 b) If a “Power On” announcement was not heard through both channels of the headphones:  the Circuit Board is most likely defective and the player should be forwarded to be evaluated for disposition. Figure 8-4. Over Mold Orientation During Assembly July 2009 Digital Talking-Book Player Service Manual–Service Center Edition...
Page 104: At Usb Cable Replacement
Repair Section 8 AT USB Cable Replacement Tools Needed Parts Needed Small Diagonal Cutting Pliers Assembly, AT Jack, 4824591155 (AT USB Cable) Small Needle Nose Pliers Cable Ties, 48424591308 Torx T10 Driver USB Flash Memory Drive This procedure describes how to replace an AT USB Cable. 1) Separate the housings as described in Section 7.1.
Page 105: Power Input Cord Replacement
Repair Section 8 Power Input Cord Replacement Tools Needed Parts Needed Torx T10 Driver Power Input Cord, 4824592020 This procedure describes how to replace a Power Input Cord. 1) Separate the housing as described in Section 7.1. Note: Examine the installation of the existing Power Input Cord before proceeding. Note how the molded strain relief fits in the Lower housing wall.
Page 106: Power Supply Cable Replacement
Repair Section 8 Power Supply Cable Replacement Tools Needed Parts Needed Small Needle Nose Pliers Cable, Power Supply, 4824591320, (Power Supply Cable) Small Diagonal Cutting Pliers Cable Ties, 48424591308 Torx T10 Driver This procedure describes how to replace a Power Supply Cable. 1) Separate the housing as described in Section 7.1.
Page 107: Power Supply Replacement
Repair Section 8 Power Supply Replacement Tools Needed Parts Needed #1 Phillips Screwdriver Power Supply, 4824591071 Torx T10 Driver This procedure describes the replacement of a power supply. 1) Separate the housing as described in Section 7.1. Note: Examine the installation and routing of the Power Input Cord and Power Supply Cable before proceeding. Figure 7-1 in Section 7 shows the cable routing.
Page 108: Handle And Retainer Spring Replacement
Repair Section 8 8.10 Handle and Retainer Spring Replacement Tools Needed Parts Needed Spring, Compression 4824591319 Small Needle Nose Pliers (Compression Spring)–as needed Torx T10 Driver Handle Retainer, 4824591303–as needed Cleaning Materials (refer to Section 8.1) Handle, 4824591101–as needed This procedure is performed for broken handles, handles that will not slide properly, or handles that are too loose.
Page 109 Repair Section 8 4) Press the new Handle Retainer into the Small End of the Compression Spring in the orientation shown in Figure 8-6. Figure 8-6. Handle Retainer and Compression Spring Orientation for Assembly 5) Press the assembled into the well with the Large End of the Compression Spring inserted first.
Page 110: Skid Resistant Feet Replacement
Repair Section 8 8.11 Skid Resistant Feet Replacement Parts Needed Feet, Skid Resistant, 4824591313 (Skid-Resistant Feet) Materials Needed Cotton Swabs Isopropyl Alcohol (IPA) This procedure describes how to install replacement Skid-Resistant Feet on the bottom of the player. Note: The feet are mounted in round, shallow wells at each corner of the Lower housing. 1) Clean the empty well with a cotton swab and IPA.
Page 111 Repair Section 8 5) Lift the handle from the Lower housing and set aside. 6) Cut the Cable Tie securing the Cable to the Cable Tie Mount. Remove the Cable Tie and discard. 7) Remove the two (2) Screws securing the Cartridge Connector. 8) Pull away from the Cartridge Dock opening.
Page 112: Software Upgrade
Repair Section 8 8.13 Software Upgrade The NLS Engineering Section will provide software updates for the player periodically or when necessary. The updates will be used to correct problems, enhance usability and to add functionality. The new software is applied to a player using a cartridge or USB flash drive and occurs automatically upon insertion. The software update files may be present on, and distributed with, regular book cartridges provided by NLS or may be downloaded by the library or patrons and explicitly applied to the player.
Page 113: Prepare To Ship
Shipping Section 9 Prepare to Ship Refer to the parts list in the Appendix for materials needed for shipping players. Note: Battery Packs must be connected prior to shipment to patrons. Note: Players and Shipping Containers shall be kept together so the serial number label on the container matches the player serial number.
Page 114: Long-Term Player Storage
Storage Section 10 Long-Term Player Storage Players that will be stored for longer than 3 months shall be stored with the Battery Pack disconnected. This is because the Battery Pack is always (even when the machine is off) powering a “gas gauge” integrated circuit which is used to determine the state of battery charge.
Page 115: Appendix
Appendix Section 11.0 Appendix 11.1 Post-Service Acceptance Test Procedures Post-Service Acceptance Test Procedures Test Procedure Steps Book Cartridge, Commercial headphones with 3.5 mm Plug, Equipment Needed: Commercial USB PC Keyboard Visually check the player for missing components, misaligned components, or other damage/defects. Visual Pass if no defects observed.
Page 116 Appendix Section 11.0 Post-Service Acceptance Test Procedures Press the Power key to power on the player. Key Identifier Press the center of each key and verify that each key is announced. Announced Pass if every key press causes a key identifier announcement. Record any observations of keys that do not cause an identifier announcement.
Page 117 Appendix Section 11.0 Post-Service Acceptance Test Procedures Test Procedure Steps Insert a book cartridge into the player. Increase volume to maximum. Listen for buzzing or humming that may indicate unintended vibration Tone and of player components. Player/ Pass if the cartridge is successfully inserted and there is no audible indication of player Cartridge USB component vibration.
Page 118: Post-Service Acceptance Test Record
Appendix Section 11.0 11.2 Post-Service Acceptance Test Record Post-Service Acceptance Test Record Serial Number of Player: Initial Record Acceptance Tests Result Date Record Pass or Fail. Visual Examination If the player fails, describe the reason in the notes below. Record Pass or Fail. Loose Components If the player fails, describe the reason in the notes below.
Page 119: Dtb Player Repair Parts List
Appendix Section 11.0 11.3 DTB Player Repair Parts List DTB Player Repair Parts List Description Part Number Quantity Note Player Components Standard Upper With speaker and 4824591202 Replacement Subassembly dock seal installed Advanced Upper With speaker and 4824591252 Replacement Subassembly dock seal installed Keypad, Standard 4824591201...
Page 120 Appendix Section 11.0 DTB Player Repair Parts List Handle 4824591101 Spring, Compression 4824591319 Handle Retainer 4824591303 Packaging Material DTBM Shipping Container Carton 4824591451 Insert, Player Shipping Container 4824591452 Label, Serial # and Barcode 4824591457 Bag, Player Shipping 4824591454 Player Instructional Material 4824591460 DTBM Shipping Container Overpack 4824591455...
Page 121: Player Checkout Worksheet
11.4 Player Checkout Worksheet D 1- Player S/N: Date: Inspected by: Check Manual Description Comment Ref. service 6.1 Inspection Damage or Excessive Contamination  Key Pad  Speaker Grill  Cartridge Dock  Cartridge USB connector  Headphone connector  AT USB connector ...
Page 122 Check Manual Description Comment Ref. service 6.4 Battery recharge No “Battery recharge in progress” response from status inquiry after initiating recharge  6.5 Battery condition & software version More than 400 charge cycles  replace battery  Software requires upgrade  upgrade software ...
Page 123: Statistics Table
Appendix Section 11 11.5 Statistics Table Type Elements Description Statistics Table Revision Statistics Table (this table) revision Player Serial Number Serial number Player Type Standard or Advanced Model Battery in player Player is set to expect that a battery is installed. General Number of Key Exchange Object Number of PTDB1 and PDTB2 keys in the player...
Page 124 Appendix Section 11 Type Elements Description Total battery play time /Total play time 1 min < # of battery usages < 30 min 30 min < # of battery usages < 1 hr Battery usage data 1hr < # of battery usages < 3 hrs 3hrs <...
Page 125 Appendix Section 11 Type Elements Description Menu Previous Next Books Number of different books (for current profile) July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 126: List Of Error Announcements
Appendix Section 11 11.6 List of Error Announcements Error Message Audio Announcement: Level Error types Library, Technician Text Message: Technician Plus, Developer At this level, all cartridge errors will be reported as: "Cartridge Error" "Cartridge Error" "Cartridge Unreadable" Unreadable (read) Unable to decode book content "Cartridge Content Error"...
Page 127 Appendix Section 11 Error Message Audio Announcement: Level Error types Library, Technician Text Message: Technician Plus, Developer Note: Due to the severity of this error, the player may not be able to save and report this information. The unit needs to be fixed. Unable to write in the internal Flash memory during a “System Upgrade Error”...
Page 128: List Of Usb-Serial Adapter Vendors
Appendix Section 11 11.7 List of USB-Serial Adapter Vendors The vendors listed below offer USB to serial adapters that utilize the FTDI USB-to-serial chip required. A cable of this type is required to interconnect a PC serial or USB port to the player AT device port. This is not intended to be an all inclusive list.
Page 129: Component Layout
Appendix: Component Layout Section 11.8 11.8 Component Layout July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 130: Player Schematic
Appendix: Player Schematics Section 11.9 11.9 Player Schematic July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 131 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 132 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 133 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 134 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 135 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 136 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 137 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 138 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...
Page 139 Appendix: Player Schematics Section 11.9 July 2008 Digital Talking Book Player Service Manual–Service Center Edition...

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