Brother MP-21C Service Manual page 5

3. MECHANICS -----------------------------------------------------------------II-11
3.1 Overview of Printing Mechanism ---------------------------------------------------- II-11
3.2 Print Head -------------------------------------------------------------------------------- II-12
3.3 Ink Cartridge -----------------------------------------------------------------------------
3.4 Head Maintenance Mechanism ----------------------------------------------------- II-15
3.5 Sensors ----------------------------------------------------------------------------------- II-16
3.6 Carriage Drive Mechanism ----------------------------------------------------------- II-20
3.7 Paper Feed Mechanism --------------------------------------------------------------- II-21
CHAPTER III DISASSEMBLY AND REASSEMBLY
1. PRECAUTIONS -------------------------------------------------------------- III-1
1.1 Safe Precautions ------------------------------------------------------------------------ III-1
1.2 Attention ----------------------------------------------------------------------------------- III-1
2. TIGHTENING TORQUE LIST--------------------------------------------- III-2
3. DISASSEMBLY ORDER FLOW ----------------------------------------- III-3
4. DISASSEMBLING AND REASSEMBLING PROCEDURE ------- III-4
4.1 Ink Cartridge, ACSF --------------------------------------------------------------------- III-4
4.2 Top Cover, Paper Guide, Front Cover, Release Plate, Rear Cover --------- III-5
4.3 Head PCB ASSY ------------------------------------------------------------------------ III-8
4.4 Ink Head Base Unit, Print Head------------------------------------------------------- III-9
4.5 Bottom Cover ----------------------------------------------------------------------------III-12
4.6 Main PCB, Power Supply PCB ASSY ---------------------------------------------III-14
4.7 Paper Feed Motor ASSY -------------------------------------------------------------III-16
4.8 Purge Unit ASSY -----------------------------------------------------------------------III-18
4.9 Paper Feed Frame ASSY ------------------------------------------------------------III-22
4.10 ACSF ------------------------------------------------------------------------------------III-34
5. LUBRICATION ---------------------------------------------------------------III-38
6. CLEANING THE PRINTER ----------------------------------------------III-43
6.1 Cleaning The Platen Cover -----------------------------------------------------------III-43
6.2 Cleaning The Edge Of The Head Cap ---------------------------------------------III-43
6.3 Cleaning The Pick-up Roller On The ACSF --------------------------------------III-44
7. PACKING ---------------------------------------------------------------------III-45
PR99052
II-14