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Rev. 1.00
- 3 -
SRP-F310/312
4. Hardware ...................................................................................................................................................33
4-1 Wiring Diagram .....................................................................................................................................33
4-2 Block Diagram.......................................................................................................................................34
4-3 Special Circuit Descriptions..................................................................................................................39
4-3-1 Power Circuit..................................................................................................................................39
4-3-2 RESET Circuit................................................................................................................................40
4-3-3 Buzzer and Cash Drawer Circuits..................................................................................................41
4-3-4 I/F PBA Detect Block Diagram.......................................................................................................42
4-3-5 RS-232C Communication Block Diagram......................................................................................42
4-3-6 Parallel Communication Block Diagram ........................................................................................43
4-3-7 USB Communication Block Diagram .............................................................................................43
4-3-8 DIP Switch Circuit ..........................................................................................................................43
4-3-9 Thermal Printer Head Circuit .........................................................................................................44
5. Disassembly and Assembly ....................................................................................................................45
5-1 Case lower block ..................................................................................................................................45
5-2 Case Upper block .................................................................................................................................48
5-3 Frame block ..........................................................................................................................................51
6. Adjustments and Maintenance................................................................................................................53
6-1 Adjustment............................................................................................................................................53
6-1-1 Remaining Roll Paper Adjustment.................................................................................................53
6-2 Maintenance .........................................................................................................................................54
7. Troubleshooting .......................................................................................................................................55
7-1 Troubleshooting flow chart....................................................................................................................55
7-1-1 POWER LED does not light...........................................................................................................56
7-1-2 Paper and Error led blink ...............................................................................................................57
7-1-3 Paper and Error led lit ....................................................................................................................58
7-1-4 Paper led lit ....................................................................................................................................59
7-1-5 Error led blink.................................................................................................................................60
7-1-6 Error led lit......................................................................................................................................61
7-1-7 Self test is not normal ....................................................................................................................62
7-1-8 Data from host is not printed normally ...........................................................................................63
7-2 Power Problem .....................................................................................................................................64
7-2-1 Printing Quality Problems ..............................................................................................................65
7-2-2 Printer Mechanism Problems.........................................................................................................66
7-2-3 Auto Cut Mechanism Problems .....................................................................................................66