Service manual

Table of Contents
ii
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
2.7 Weighing Options ......................................................................................2-12
2.8 External Printer Option ..............................................................................2-12
2.9 Special Services Options...........................................................................2-12
2.10 Graphics (Slogans, Permits and Inscriptions) .........................................2-12
2.11 Internal Ad and Inscription Storage ..........................................................2-12
2.12 Compatible Pitney Bowes Software ........................................................2-13
2.13 Consumables (US) ..................................................................................2-13
2.14 User-Replaceable Parts ..........................................................................2-13
2.15 Meter Reports ..........................................................................................2-14
Chapter 3 – Theory of Operation
3.1 Introduction ..................................................................................................3-1
3.2 Product Features .........................................................................................3-1
3.3 User Interface ..............................................................................................3-2
LED States ..................................................................................................3-2
Modes of Operation .....................................................................................3-3
3.4 Envelope Tape Transport .............................................................................3-4
DM400c /DM450c/DM475 Autofeeder Transport ........................................3-4
Tape Feeder ................................................................................................3-8
Upper Transport ..........................................................................................3-9
Lower Transport ........................................................................................3-10
Sequence of Operation ............................................................................. 3-11
3.5 Ink System .................................................................................................3-23
Ink Cartridge ..............................................................................................3-23
Print Head and Carriage Board .................................................................3-24
Carriage Assembly ....................................................................................3-25
Purge Unit .................................................................................................3-26
Waste Tank ................................................................................................3-29
User Maintenance .....................................................................................3-29
3.6 Electronics .................................................................................................3-30
PCBs .........................................................................................................3-33
Sensor Summary.......................................................................................3-41
Motor Summary .........................................................................................3-43
3.7 Scale Controller .........................................................................................3-44
3.8 USB ...........................................................................................................3-44
3.9 LEDs ..........................................................................................................3-44
3.10 DM475 Feeder/WOW Theory ..................................................................3-45