Japan Cash Machine Taiko Service Manual

Bill acceptor

Hide thumbs Also See for Taiko:

Service manual (8 pages)

Table Of Contents

Table of Contents

Quick Links

Download this manual

Service Manual

Issue: 06/2008

4045-SME-000E

Table of Contents

Summary of Contents for Japan Cash Machine Taiko

Page 1 Service Manual Issue: 06/2008 4045-SME-000E...
Page 2: Precautions
TAIKO Service Manual Preface Thank you for purchasing JCM’s TAIKO Bill Acceptor. Please be sure to read the follow- ing and any related documents thoroughly to understand the correct operation and features of this unit. Note 1. It is forbidden to copy the contents of this manual, in whole or in part, except for the user’s personal use, without the express permission of Japan Cash Machine Co., Ltd.
Page 3 Do not pull on the power harness with undue force, as that may cause the harness to break. Operation Be sure to turn off the power to the TAIKO unit when opening the upper and lower covers. Failure to do so may result in your fingers becoming caught in the moving roller.
Page 4: Product Configurations
X4: SERIAL(ID-003)/MDB/PULSE/ccTalk 01 : ID-001 (parallel) Example: PUB-7 EUR-1020-X4 Indicates the TAIKO model Bill Acceptor with Optical/Transparency Reflection Type, Type 1 faceplate, Euro software, no optional unit, interface pin assignment (ccTalk-compatible) type board, standard operation code, and an Serial(ID-003)/ MDB/Pulse/ccTalk interface.
Page 5: Package Contents
TAIKO Service Manual Package Contents The following items are contained within the TAIKO Package. TAIKO unit Installation Guide ID-001 I/F Harness (3280-05-100) * Bandled Item for Parallel Interface TAIKO Integration Specification Guide - This unit has been carefully packed, with special attention taken in regard to quality.
Page 6: Ce Marking Note
TAIKO Service Manual CE Marking Note DECLARATION CONFORMITY MANUFACTURER Name JAPAN CASH MACHINE CO., LTD. Address 3-15, 2-chome, Nishiwaki, Hirano-ku, Osaka, 547-0035 Japan Phone +81-6-6703-8405 +81-6-6704-7843 DETAILS OF PRODUCT BILL ACCEPTOR MODEL TYPES PUB-7, PUB-11 THIS PRODUCT CONFORMS TO THE ESSENTIAL REQURIEMENTS OF...
Page 7: Rohs Compliance
TAIKO Service Manual RoHS Compliance The TAIKO (PUB-7/PUB-11) is a RoHS Compliant products. The following six kind of hazardous substances restricted by RoHS are NOT contained in the TAIKO unit. nRestricted Hazardous Substances - Plumbum - Mercury - Cadmium - Chromium Hexavalent...
Page 8: Table Of Contents
TAIKO Service Manual Table of Contents Preface Preface ..........................2 Note ..........................2 Precautions ........................2 Product Configurations ....................4 Package Contents ......................5 CE Marking Note ......................6 RoHS Compliance ......................6 Documentation Conventions ..................6 Chapter 1 Introduction 1-1.
Page 9 TAIKO Service Manual 2-4. External Dimensions ..................2-11 2-4-1. When installing the Type 1/ Type 2/ Type 3 faceplate with TAIKO unit ....2-11 2-4-2. When installing the Type 5 faceplate with TAIKO unit ..........2-12 2-5. DIP Switch Setting ..................... 2-13 2-5-1.
Page 10 7-1-1. Entire Unit & Option Exploded View ................7-2 7-1-2. Entire Unit & Option Parts List ..................7-3 7-2. TAIKO (PUB-7/PUB-11) Unit ................7-4 7-2-1. TAIKO (PUB-7/PUB-11) Unit Exploded View .............. 7-4 7-2-2. TAIKO (PUB-7/PUB-11) Unit Parts List ............... 7-5 7-3. Bezal Unit ......................7-7 7-3-1.
Page 11: Chapter 1 Introduction
Chapter Introduction 1-1. Main Features 1-2. Prior to Use 1-3. Component Names 1-4. System Configuration 1-5. Operation Flowchart Issue: 06/2008 4045-SME-001D...
Page 12: Main Features
TAIKO Service Manual 1-1. Main Features In this section, TAIKO unit’s main features are explained. Easy Installation Installation/removal of TAIKO unit is very easy in the clip-on style. Anyone can install the TAIKO unit easily. Data Scanning Frequency Data Scanning frequency can be selected with DIP Switch.
Page 13: Prior To Use
Creat the panel cut out on the door to install the TAIKO unit. See => 3-1. Installation / Operation 3. Setting Set the DIP switch depending on the connected machine or the features of TAIKO unit you want to use. See => 2-5. DIP Switch Settings 4.
Page 14: 1-3.Component Names
TAIKO Service Manual 1-3. Component Names Bottom Rear Front Right Left A. Faceplate B. LED lamp C. Upper lid D. Lower lid E. Lower lid lock button F. Bill insertion slot G. Bill ejection slot H. Interface connector I. Maintenance connector J.
Page 15: System Configuration
TAIKO Service Manual 1-4. System Configuration The following diagram represents the standard items can be connected to the TAIKO unit. TAIKO Unit Palm’ s Tungsten C TAIKO Harness B (EDP# 116488, Part# 3280-03-11) PC (Windows 98SE/2000/XP) TAIKO Harness A (EDP# 127527, Part# 3280-05-54)
Page 16: Operation Flowchart
TAIKO Service Manual 1-5. Operation Flowchart Power ON Initializing Idling LED OFF Accept Bill? LED ON Insert Bill? Transport Bill (Scanning Bill Date) Stop Feeding Bill Validation Accepted Bill? Output Denomi Signal © 2006 Japan Cash Machine Co.Ltd. All rights reserved.
Page 17 TAIKO Service Manual Carry Out Bill Reject Bill (Carry Out to Cashbox) Completed? Completed Retry Rejection Retry Carrying Out Completed? Completed? Output VEND Signal Completed Stop Stop LED Red Blink *1 LED Red Blink *1 Turn the pouwer OFF and clear the jammed bill. Then turn on the power again.
Page 19: Chapter 2 Specifications
TAIKO Service Manual Chapter Specifications 2-1. Specifications 2-2. Connector 2-3. Interface Circuit 2-4. External Dimensions 2-5. DIP Switch Settings Issue: 10/2007 4045-SME-002J...
Page 20: Basic Technical Specifications
TAIKO Service Manual 2-1. Specifications 2-1-1. Basic Technical Specifications Length: 120 mm to 160 mm Acceptable Bankenote Width: 62 mm to 82 mm Insertion Direction *1 4-way Accepting Rate *1 95% or higher PUB-7: Optical/Transparency/Reflection Validation Method PUB-11: Optical/Transparency/Reflection/MAG Anti-Fishing Mechanism...
Page 21 Allow 100 mm above the unit to open the lid for removal of the unit from the faceplate. The cashbox must be 100 mm or more in depth from the bottom of the TAIKO unit, 200 mm or more in depth from the rear of the unit and 100 mm or more in width.
Page 22: Connector
TAIKO Service Manual 2-2. Connector - When a relay board has connected to the TAIKO unit, it was fixed inside so do not remove from the TAIKO unit. 2-2-1. Interface Connector X4: ID-003 (serial)/ MDB/ Pulse/ ccTalk Specification The following diagram is the interface connector as viewed from the acceptor side or from a relay board.
Page 23: Interface Connector
TAIKO Service Manual ID-003 (serial)/ MDB Communication Pin No. Signal Name I/O *1 Function Not Connected Not Connected RXD- Data Send Line RXD+ (Active when the current is applied) T XD- Data Receive Line T XD+ (Active when the current is applied)
Page 24: Interface Connector Pin Assignments
TAIKO Service Manual 2-2-2-1. Interface Connector Pin Assignments 01: ID-001 (parallel) Specification Signal Pin No. I/O *1 Function Name 12V DC Power Supply 12V DC Power Supply Power Supply GND Not Connected ACK signal receive line REJ signal receive line...
Page 29: External Dimensions
TAIKO Service Manual 2-4. External Dimensions 2-4-1. When installing the Type1/Type2/Type3 faceplate with TAIKO unit Unit:mm 2 to 6mm (Panel Thickness) 47.2 (Max. Banknote Width 82) Front Right Side Rear 4-M4 * The length of A differs depending on the faceplate type.
Page 30: When Installing The Type5 Faceplate With Taiko Unit
TAIKO Service Manual 2-4-2. When installing the Type5 faceplate with TAIKO unit Unit:mm ‚2 6mm(Panel Thickness) (Acceptable Bill Width 66) Front Right Side Rear 11.4 39.6 Bottom © 2006 Japan Cash Machine Co., Ltd.. All rights reserved. 2-12...
Page 31: Dip Switch Setting
TAIKO Service Manual 2-5. DIP Switch Settings The communication method and various functions of the TAIKO unit can be set with the DIP switches on the left side of the unit. Left Side 2-5-1. Basic Settings X4: ID-003 (serial)/ MDB/ Pulse/ ccTalk Specification...
Page 32: Basic Settings 01 : Id-001 (Parallel) Specification
TAIKO Service Manual 2-5-2. Basic Settings 01: ID-001 (parallel) Specification For details about the Test Mode, refer to 5-3. Test Mode. The acceptance rate will be improved but operation time will be increased if a banknote is rejected. Fishing prevention will be improved but operation time will be increased.
Page 33 To perform the inhibit setting, set DIP switch Nos.1, 6 and 7 to ON and then turn on the power to the TAIKO unit. After the LED flashes white, set DIP switch No.1 to OFF to enter the setting mode. Insert the denomination of banknote that you want inhibit into the insertion slot. The setting is registered if the LED remains lit orange and the banknote is returned.
Page 34 TAIKO Service Manual LED Pattern Setting Mode The LED pattern can be changed according to your perference. Select between pattern 1 and pattern 2. The default setting is pattern 1. Define Pattern 1 t Define Pattern 2 Here on top you see two examples for DIP Switch settings.
Page 35 Set DIP switch No. 1 to 6 to ON ( Set DIP switch No. 7 and 8 to OFF) and the supply the power to the TAIKO unit. Set DIP switch No. 1 to OFF to initialize the encryption code.
Page 36: Chapter 3 Installation / Operation
Chapter Installation/ Operation 3-1. Installation/Removal 3-2. Wiring 3-3. Clearing a Banknote Jam Issue: 06/2008 4045-SME-003D...
Page 37: Installation/Removal
Panel Thickness 2 mm to 6 mm 2. Hold in the upper lid open/close buttons on both sides of the TAIKO unit and open the upper lid in the direction of the arrow. 3. Grasp the TAIKO unit with your hand under the upper lid.
Page 38 TAIKO Service Manual 4. Press down slightly on the faceplate and raise up on the TAIKO unit. Slide the TAIKO unit up and back to detach it from the faceplate. back and up to detach it from the faceplate. 5. Remove the faceplate brackets (2) and the hexagonal nuts (2) from the faceplate, then insert the faceplate into the cutout from the front side of the door.
Page 39 TAIKO unit with your hand under the upper cover. 8. Insert the faceplate installation guide pin into the faceplate guide, and slide the TAIKO unit all the way into the guide and then push down, as indicated by the arrows.
Page 40: Wiring
3-2. Wiring This section describes the procedures for connecting the power harness to the TIKO unit. Follow the steps given below when connecting the power harness to the TAIKO unit. - When installing the TAIKO unit or connecting the wiring har- ness, make sure that the power harness is unplugged from the power terminal.
Page 41: Wiring Procedure
1. Confirm that there is no power being supplied to the power harness. 2. Connect the power harness to the TAIKO unit’s interface connector. 3. Turn on the power and confirm that the TAIKO unit operates properly. © 2006 Japan Cash Machine Co.Ltd. All rights reserved.
Page 42 When a banknote becomes jammed inside the TAIKO unit, follow the instructions below to remove the jammed banknote. - Be sure to turn off the power to the TAIKO unit when opening the upper and lower covers. Failure to do so may result in your fingers becoming caught in the moving roller.
Page 43: Chapter 4 Download / Adjustment
TAIKO Service Manual Chapter Download & Adjustment 4-1. Download 4-2. Adjustment 4-3. Palm 4-4. Cloning Issue: 11/2007...
Page 44: Requirements
- When TAIKO unit is connected with host machine, JCM power supply unit and the TAIKO harness A are not required. - The TAIKO harness A is only for TAIKO units with a blue JCM logo label. If the logo is black, the harness may differ. For details, please contact JCM.
Page 45: Connecting Procecedure
TAIKO Service Manual 4-1-2. Connecting Procedure 1. Set the DIP switch Nos.1, 7 and 8. DIP switch is located on the right side of TAIKO unit. 2. Connect TAIKO unit, PC and JCM Power Supply unit (VM-30) as shown below.
Page 46: Download Procedure
TAIKO unit. 6. Press the [Start Download] button to start downloading. 7. When downloading is completed. TAIKO’s LED lamp turn into Blue. 8. Turn off the power and remove the TAIKO unit. © 2006 Japan Cash Machine Co.Ltd. All rights reserved.
Page 47: Writing Serial No
TAIKO Service Manual 4-1-4. Writing Serial No. When replacing CPU board, follow the steps below and write Serial No.. Double click SerialNo.exe and then the following window will appear. 2. Click [Read Serial Number] button and then 6-digit of current serial number will be displayed in the box next to the button.
Page 48: Adjustment
TAIKO harness A are not required. 4-2-2. Adjustment Procedure 1. Confirm the power is not supplied to the TAIKO unit and remove the TAIKO unit from the faceplate. For details about removing the faceplate, refer to the 3-1. Installing/ Removing.
Page 49 TAIKO Service Manual 4. Turn on the power to the TAIKO unit. Confirm that TAIKO’s white LED lamp is flashing. 5. Set the DIP switch No.1 OFF and confirm that TAIKO’s green LED lamp lights. 6. Insert the reference paper (KS-070) to the TAIKO unit. Then the roller start rotating and then continue to insert the reference paper all the way in.
Page 50: Palm
- JCM power supply unit (Part#: VM-30, EDP#: 116125) - TAIKO harness A (Part#: 3280-05-54, EDP#: 127527) - When TAIKO unit is connected with host machine, JCM power supply unit and the TAIKO harness A are not required. 4-3-2. Installing File Converter (PdbConvEN.exe) When downloading a software from palm, the file needs to be convert into prc format.
Page 51: Converting Software Program
TAIKO Service Manual 4-3-3. Converting Software Program Follow the steps below, convert the software program into prc format. 1. Double click the PdbConvEn.exe icon to start the PdbConvEn. The following window will appear. 2. Confirm the Download File tab and click the [...] button to select a file you want to convert.
Page 52: Download Procedure
When downloading a software from your palm, follow the instructions below. 1. Set the TAIKO unit’s DIP switch Nos. 1, 7 and 8 ON. 2. Connect your palm with the TAIKO unit as shown below and supply the power to the TAIKO unit.
Page 53: Cloning
(Part#: VM-30, EDP#: 116125) equivalent 2. Set the DIP switch of the master TAIKO unit Nos. 1, 2, 7 and 8 ON and the DIP switch of the slave TAIKO unit Nos. 1, 7 and 8 ON. © 2006 Japan Cash Machine Co.Ltd. All rights reserved.
Page 54 TAIKO Service Manual 3. Confirm the LED lamp of the master TAIKO unit is flashing withe, the LED lamp of the slave TAIKO unit is flashing green. 4. Set the DIP switch of the master TAIKO unit No. 1 OFF to start cloning.
Page 55: Chapter 5 Trouble Shooting / Maintenance
TAIKO Service Manual Chapter Trouble Shooting / Maintenance 5-1. Error Codes 5-2. Trouble Shooting 5-3. Test Mode (Diagnostics) 5-4. Cleaning 5-5. Maintenance Tool Lists 5-6. Wiring Diagrams 5-7. Product Support Issue: 06/2008 4045-SME-005G...
Page 56: General Troubles
Entrance solenoid error Exit solenoid error Fraud detected 5-2. Trouble Shooting When an error message appears or trouble is occures and the TAIKO unit does not work properly, recover the TAIKO unit following the instruction below. 5-2-1. General Troubles Symptom/Error Message...
Page 57 Chapter 2 Specifications Specifications) Rollers, belts and lenses is Clean the rollers, belts and lenses. soiled with dirt. See=> 5-4. Cleaning Adjust the TAIKO unit. See=> 4-2. Sensor needs to be adjusted. Adjustment After disassembled, the Adjust the TAIKO unit. See=>...
Page 58: Adjustment Troubles
Motor rotates a few times 2. Replacement of CPU board and stop. Set the DIP Switch No.1 ON and DIP Switch setting is wrong. supply the power to the TAIKO unit. Perform the DIP Switch TEST. See=> 5-3-2. DIP Switch Test Details DIP Switch is broken.
Page 59: Communication Troubles
Possible Causes Recovery Action Set all DIP Switches OFF and DIP switch setting is wrong. supply the power to the TAIKO unit. Connector is unplugged or is Connect all connector properly. not connected properly. Verify if the connector pin is any Connector pin is broken.
Page 60: Test Mode (Diagnostics)
TAIKO Servic e Manual 5-3. Test Mode (Diagnostics) TAIKO has the diagnostics function. TAIKO can be specified the part of the error using the diagnostic funktion. 5-3-1. DIP Switch Setting List Test Items SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8...
Page 61: Transport Motor Reverse Rotation Test Procedure
5-3-5. Aging Procedure 1. Set the switch No.1, 2 and 4 ON and supply the power to the TAIKO unit. 2. Set the switch No. 1 OFF to start the test. TAIKO unit repeates the following operation. LED lamp lights => Motor rotates foward => Motor rotates reverse 3.
Page 62: Solenoid Test Procedure
Test the condition of the solenoids. 1. Set the switch Nos.1, 2, 3 and 4 ON and turn ON the power to the TAIKO unit. 2. Set the switch No.1 OFF to start the test. The TAIKO unit repeates the following operation.
Page 63: Entrance Flapper Test Procedure
5-3-9. Exit Flapper Test Procedure Test the exit flapper. 1. Set the switch Nos.1, 2, 4 and 5 ON and turn ON the power to the TAIKO unit. 2. Set the switch No.1 OFF to start the test. Then the exit flapper repeates open/close operation.
Page 64: Cleaning
Clean the acceptor parts once a month. Wipe out on the sensor with lint-free cloth or cotton bud. Remove the paper dust or foreign object completely on the rollers. - DO NOT use the organic solvent such as thinner or benzin, when wiping the TAIKO unit. Sensors/Rollers Location Sensor...
Page 65: Maintenance Tool List
TAIKO Service Manual 5-5. Maintenance Tool List When maintenace or adjust TAIKO unit, the following parts need to be parchased. Items EDP# Part# Description This unit is to supply the power to TAIKO Power Supply Unit 116125 VM-30 unit. This harness is to connect with TAIKO unit...
Page 68: Product Support
TAIKO Servic e Manual 5-7. Product Support If you happen to experience any problems or errors with your TAIKO unit, or have any inquiries regarding your unit, consult with your nearest JCM contact as shown below. Please be sure to make a note of the problem points andy symptoms, or the content of your inquiry, prior to making contact.
Page 69: Chapter 6 Replacement
TAIKO Service Manual Chapter Replacement Procedure 6-1. Replacement of Faceplate Guide 6-2. Replacement of CPU Board 6-3. Replacement of MAG Board (PUB-11 Only) 6-4. Replacement of Sensor Board 6-5. Replacement of Encoder Board/ Motor Unit 6-6. Replacement of Solenoid Issue:...
Page 70: Replacement Of Faceplate Guide
TAIKO Service Manual 6-1. Replacement of Faceplate Guide When replacing the Faceplate Guide, follow the instructions below. 1. Take out two (2) screws from bihind the Faceplate unit. 2. Remove a (1) Faceplate Guide from the Faceplate. 3. Insert a (1) new Faceplate Guide into the Faceplate and then tighten two (2) screws to hold the Faceplate Guide.
Page 71: Replacement Of Cpu Board
TAIKO Service Manual 6-2. Replacement of CPU Board When replacing the CPU Board, follow the instructions below. 1. Insert your fingernail into the gap of left or right side of the Upper Lid. Lift up the Upper Lid Cover with your fingernail and remove it.
Page 72: Replacement Of Mag Board
TAIKO Service Manual 6-3. Replacement of MAG Board (PUB-11 Only) The MAG board is mounted in the PUB-11 unit. When replacing the MAG Board, follow the instructions below. 1. Take out a connector and two (2) screws from the MAG board.
Page 73: Replacement Of Sensor Board
When replacing the Sensor Board, follow the instructions below. 1. Take out two (2) screws from the both left and right side of the TAIKO unit. 2. Remove a Upper Lid, Side Cover L and R. Unplug two (2) connectors of the both left and right side of the transport unit.
Page 74 TAIKO Service Manual 3. Remove the transport unit form the Lower Base. 4. Take out three (3) screws each from the both side of the Transport Unit. Remove the Center Guide. © 2006 Japan Cash Machine Co.Ltd. All rights reserved.
Page 75 TAIKO Service Manual 5. Remove the Feed Roller Assy of the both side of the Center Unit. Take out three (3) washers each from the both side of the Center Unit. 6. Insert the minus driver or equivalent into the encircled area as shown below. Lift up the Center Guide A and remove it from the Center Guide B.
Page 76 TAIKO Service Manual 7. Take out a (1) screw and a (1) prism from the Center Guide A. 8. Take out two (2) screws on the Sensor Board. Slide aside the Sensor Board and re- move it from the Center Guide A.
Page 77: Replacement Of Encoder Board/Motor Unit
TAIKO Service Manual 6-5. Replacement of Encoder Board/Motor Unit When replacing the Encoder Board and Motor Unit, follow the instructions below. 1. Take out a (1) screw from the Center Guide B (Refer replacement procedure 6. of 6-4. Replacement of Sensor Board. Remove the motor Unit.
Page 78: Replacement Of Solenoid
TAIKO Service Manual 6-6. Replacement of Solenoid When replacing the Entrance and Exit Solenoid, follow the instructions below. 1. Take out two (2) screws from the Lower Guide and then remove the Guide Assy. 2. Put the Lower Guide upside down and open the Lower lid pressing the Lower Lid Open/Close Button.
Page 79 TAIKO Service Manual 3. Remove two (2) Guide Levers from the Lower Guide. 4. Take out two (2) screws and then remove a (1) Entrance and a (1) Exit Solenoid. © 2006 Japan Cash Machine Co.Ltd. All rights reserved. 6-11...
Page 80: Parts List
TAIKO Service Manual Chapter Exploded View/ Parts List 7-1. Entire Unit & Option 7-2. TAIKO (PUB-7/PUB-11) Unit 7-3. Bezel Unit Issue: 05/2008 4045-SME-007H...
Page 82 TAIKO Service Manual 7-1-2. Enter Unit & Option Parts List N o. ED P N o. P art N o. D escrip t ion R emark P U B -7 U nit P U B -11 U nit 121872 P U B -7 F acep lat e for EU R (68mm)
Page 84: Taiko (Pub-7/Pub-11) Unit Parts List
TAIKO Service Manual 7-2-2. TAIKO (PUB-7/PUB-11) Unit Parts List EDP No. Part No. Descrip tion Qty . Remark 115543 TDS-04B-328 Enterance Solenoid 115544 TDS-04B-327 Exit Solenoid 114977 3280-05-01 Relay Harness (14P) 114978 3280-05-02 PI Harness (3P) 114980 3280-05-04 Relay Harness 2 (4P)
Page 85 TAIKO Service Manual EDP No. Part No. Description Qty. Remarks 110910 4045RE0120A Right Guide 110911 4045RE0138 Prism (D) 130164 4045RE0117B Sensor Lever 127518:4045AS0103A 115494 4045RE0150A Drive Pulley (F) DRIVE PULLEY(F) ASSY 115495 4045RE0151A Shutter Sensor Lever 115496 4045RE0152 EXIT Prism (A)
Page 87: Bezel Unit Parts List
TAIKO Service Manual 7-3-2. Bezel Unit Parts List EDP No. Part No. Description Qty. Remarks 110884 4045RE0135A Faceplate PUB-7 Faceplate Guide for EUR 110897 4045RE0136B Type 1 (68mm) PUB-7 Faceplate Guide for 118069 4045RE0158B Type 2 GBR/SCO (76mm) 121519 4045RE0161B...

Japan Cash Machine Taiko Service Manual

Chapter 1 Introduction

Chapter 2 Specifications

Chapter 3 Installation / Operation

Chapter 4 Download / Adjustment

Chapter 5 Trouble Shooting / Maintenance

Chapter 6 Replacement

Chapter 7 Exploded View / Parts List

Quick Links

Related Manuals for Japan Cash Machine Taiko

Summary of Contents for Japan Cash Machine Taiko

Table of Contents