Brother MP-21C Service Manual page 6

CHAPTER IV TROUBLESHOOTING
1. INTRODUCTION ------------------------------------------------------------- IV-1
1.1 Initial Check ------------------------------------------------------------------------------- IV-1
1.2 Basic Procedure ------------------------------------------------------------------------- IV-2
2. TROUBLESHOOTING ----------------------------------------------------- IV-3
2.1 Troubleshooting Procedure ------------------------------------------------------ IV-3
3. INSPECTION MODE ----------------------------------------------------- IV-10
3.1 Extended Functions ------------------------------------------------------------------- IV-10
3.2 Hidden Functions ---------------------------------------------------------------------- IV-11
3.3 Error Codes ----------------------------------------------------------------------------- IV-13
APPENDIX A
Appendix A1 Head PCB Circuit Diagram ------------------------------------------------ A-1
Appendix A2 Main PCB Circuit Diagram (1/3) ------------------------------------------ A-2
Appendix A3 Main PCB Circuit Diagram (2/3) ------------------------------------------ A-3
Appendix A4 Main PCB Circuit Diagram (3/3) ------------------------------------------ A-4
Appendix A5 Cartridge Sensor Circuit Diagram ---------------------------------------- A-5
APPENDIX B
Appendix B Head Cleaning ----------------------------------------------------------------- B-1
PR99065