Service manual

March, 09 TTPM3 - Service Manual 19
ADDR.
LATCH
CHIP
SELECT
D0—D7
D0—D7
A0—A15
PRINTER
STEPPER
MOTOR
ENCODING
STEPPER
MOTOR
CUTTER
MOTOR
UPPER
ENTRY
SOLENOID
LOWER
ENTRY
SOLENOID
OUTPUT
SOLENOID
CUTTER
MOTOR
DRIVE
CIRCUIT
SOLENOID
DRIVERS
A8—A15
A0—A7
LOWER
ENTRY
INPUT
SENSOR
UPPER
ENTRY
INPUT
SENSOR
TOP-OF-
FORM
SENSOR
CUTTING
POSITION
SENSOR
AFTER
CUTTING
SENSOR
MAGNETIC
STRIPE
MODULE
PRINTHEAD
DRIVER
PRINTHEAD
TTL TO RS232
VOLTAGE
ADAPTATION
HOST
J2
J11
FRONT
LOAD
PAPER
SENSOR
J3
J15
J17
J18
J19
J20
J21
J1
J24
J23
ON/OFF
SWITCH
LOGIC
J5
CPU
U3
U2
U1
RAM
U4
U10
A0, A1
D0—D7
D0—D7
A
0, A1
HOME SENSOR
U6
THERMISTOR
J10
J9
J8
U8, U9, U12
U11
U5
LAMP
DRIVE
CIRCUITS
Q10—Q14
Q15—Q18
J6
J7
2nd REAR
BUTTON
RED LED
2nd FRONT
BUTTON
AMBER LED
GREEN LED
FRONT
BUTTON
J16
I/O
PORTS
I/O
PORTS
Q6, Q7,
Q19, Q20
Q1—Q4
U19, U20
VOLTAGE
CONTROLLED
OSCILLATOR
U13
Tranistor
switch
+5V
+24V
Flash
PROM
SW95041-TTPM
3
PRINTHEAD
LIFT MOTOR
DRIVE CIRCUIT
PRINTHEAD
LIFT MECH.
& POSITION
SENSORS
FRONT LOAD
DUMP MECH.
SOLENOID
J22
LOWER TRACK
STANDBY POS.
SENSOR
Regulator
EXTERNAL
POWER
SUPPLY
UNIT
REAR
BUTTON
BLUE LED
Pole 2: RDX
Pole 3: TXD
Pole 4: DTR
Pole 5: GND
Pole 7: RTS
Pole 8: CTS
Figure 12. TTPM3 functional block diagram