Uniwell SX-6600F, Repair Manual

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Explanation of Blocks - 5
3-3. Block Diagram of PRT UNIT 041 (SX-6750)
3-4. Block Diagram of PRT UNIT 051 (SX-6700/6750)
- TMP95FY64 Printer Controller : which controls printer
- 1M CMOS RAM (128k x 8bit) : which memorizes the print data
3-5. Block Diagram of DSP UNIT 061
PRT UNIT 041
Printer
LT-1320
PRT UNIT 051
Sensor
Driver
PRT UNIT 041
Printer
LT-1320
RAM
128K x 8bit
Printer Controller
TMP95FY64
Printer
M-T245
24.576MHz
XTAL4
*1 *1
Head
Paper
Sensor
*1
Serial
Data
Buffer
Auto Cutter
Driver/Sensor
*1
Driver
*2
*2
*2
MPU UNIT 071-2
*2
PRT UNIT 051
*1: SX-6700
*2: SX-6750
Dot VFD Controller
M66004FP
/RESDSP /CS
Front Dot Display
(DL1619A)
16 digits
RDSPON
(Rear Display
ON/OFF)
/RESET /CS P0
Front Display
(FIP12C12)
12 digits
Digit
line
Segment
line
CN3 CN2 CN1
MPU UNIT 071-2
PRINT INDEX