Oki Microline 3320 Maintenance Manual

C – 10
2 In receiving by serial interface, printing data is omitted or printing operation is not performed.
Are RxD and SSD of Q3 as specified in Figure C-3-4?
No Replace the Q2.
Yes Are, WR, and BUS signals of Q3 pin 3 as specified in Figure C-3-5?
No Replace the Q3.
Yes Is the level of a BUS signals at Q7 pins 2-9 the same as that of DB0-7 when
WR signal is started?
No Replace the Q7.
Yes Is 4 pin of Q6 identical to WR signal in Figure C-3-5?
No Replace the Q6.
Yes Check Q501 in the SDDV PCB.
Figure C-3-5
542ns
5V

0V
5V

0V
WR



Q3-3

Oki Microline 3320 Specifications

General

Print Technology	Impact Dot Matrix
Emulations	Epson FX, IBM ProPrinter
Resolution	240 x 216 dpi
Print Resolution	240 x 216 dpi
Print Speed	435 cps
Connectivity	Parallel, USB
Paper Handling	Continuous paper
Number of Pins	9
Paper Width	76.2 - 254 mm
Noise Level	57 dBA