SERVICE MANUAL

MODEL: PT-9200PC

Copyright Brother 1998 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice.

PREFACE

This publication is a service manual covering the specifications, theory of operation, disassembly/ reassembly procedure, and troubleshooting of the Brother label printer PT-9200PC. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our PT-9200PC. To perform appropriate maintenance so that the machine is always in best condition for the customer, the service personnel must adequately understand and apply this manual. This manual is made up of four chapters and an appendix.
CHAPTER I CHAPTER II CHAPTER III CHAPTER IV APPENDIX
SPECIFICATIONS MECHANISMS ELECTRONICS TROUBLESHOOTING CIRCUIT DIAGRAM

CHAPTER I

SPECIFICATIONS

CONTENTS

CHAPTER I SPECIFICATIONS
1.1 MECHANICAL SPECIFICATIONS... I-1 1.1.1 External View.... I-1 1.1.2 Input Specifications.... I-2 1.1.3 Display Specifications.... I-2 1.1.4 Printing Specifications.... I-2 1.1.5 Tape Cassette Specifications... I-3 1.1.6 Tape Cutter Specifications.... I-3 1.1.7 PC Interface Specifications... I-3 1.2 ELECTRONIC SPECIFICATIONS.... I-4 1.2.1 Power Supply Specifications.... I-4
MECHANICAL SPECIFICATIONS

External View

(1) Dimensions (W D H) (2) Weight Machine proper Machine and package

145 mm

115 mm 245 mm 145 mm Approx. 1.5 kgf (only the machine) Approx. 2.4 kgf

115 mm

245 mm

Fig. 1.1-1 External View

Input Specifications
(1) Number of keys (2) Key layout 2 (ON/OFF ( ) and FEED/CUT ( ) keys) See Fig. 1.1-2.

FEED/CUT key

ON/OFF key

Fig. 1.1-2 Key Layout

Display Specifications
(1) Display method LED (green/red)

Printing Specifications

(1) Printing method Thermal transfer or heat sensitizing method by thermal head Printing on plastic tapes (laminated and nonlaminated tapes) or special tapes (instant lettering tape, non-laminated thermal film tape, and fabric printing tape) (Fixed print head and tape feed mechanism) 20 mm/sec
(2) Printing speed (3) Print head Type Dimensions of a heating element
Thin film thermal head 384 dots 1 dot 0.08 mm wide by 0.0545 mm high
Tape Cassette Specifications
(1) Cassette (2) Types of cassettes Laminated tape cassette Non-laminated tape cassette Instant lettering tape cassette Fabric printing tape cassette Stamp tape cassette (3) Tape size
Width Laminated tape 6,9,12,18,24,36 mm Length 8m (5 m for fluorescent coating tapes) 8m 8m 8m 8m

Cartridge type

Laminated tape, ink ribbon, and adhesive base tape Non-laminated tape and ink ribbon Instant lettering tape and ink ribbon Fabric printing tape and ink ribbon Porous-stamp tape and mount
Non-laminated tape Instant lettering tape Fabric printing tape Stamp tape
6,9,12,18,24 mm 18 mm 18 mm 18 mm
Tape Cutter Specifications
(1) Tape cutting method Automatic full cutting method (not user-replaceable) Automatic half cutting method (not user-replaceable)
PC Interface Specifications
(1) Method Serial (RS-232C) Baud rate (2) Attachments I/F cable Editor

Max. 115.2 K

Dedicated cable Dedicated editor
ELECTRONIC SPECIFICATIONS
Power Supply Specifications
(1) Power supply method Commercially available power (120V AC, 60 Hz for North America, and 230V AC, 50 Hz for Europe) is input and stabilized to generate DC voltage by the switching regulator in the machine. The power supply cord is inserted into an inlet.

CHAPTER II

MECHANISMS

Tape cassette Adhesive base tape Platen idle gear Tape feed roller Platen roller Tape feed sub roller Release cam Roller holder shaft Roller holder assy Roller release rod Thermal head assy Platen roller Platen gear Sub roller gear Laminated tape Ink ribbon

Sub roller Roller holder

Platen spring

Sub roller spring

Fig. 2.1-2 Roller Holder Assy Setting and Retracting Mechanism

II - 3

Regular Tape and Ribbon Feed Mechanism
This mechanism consists of the tape feed motor, the gear train, and the roller holder assy. (1) Regular Tape Feeding When you load a tape cassette and close the cassette cover, the platen and the thermal head sandwich the tape and ink ribbon (only the tape when using non-laminated thermal film tape cassettes or stamp tape cassettes) inbetween. Also, the tape feed sub roller in the roller holder assy and the tape feed roller inside the tape cassette sandwich the tape (and base paper when using laminated tape cassettes or stamp tape cassettes) inbetween, as described in Subsection 2.1.2. As the tape feed motor (stepping motor) rotates, the rotation is transmitted via the gear train to the platen idle gear (which rotates the platen gear) and the tape feed gear (which rotates the tape feed roller and the tape feed sub roller at the same rotation speed). Accordingly, the sandwiched tape and ink ribbon will be advanced. (When a laminated tape cassette is mounted, the sandwiched laminated tape, adhesive base tape, and ink ribbon will be advanced together.) The feeding amount of the tape feed sub roller is slightly greater than that of the platen roller.
Adhesive base tape Tape feed roller Platen idle gear Transparent laminated tape
Tape feed sub roller Platen roller Thermal head assy Roller holder assy Main frame
Tape feed gear Sub roller gear Tape feed motor Platen idle gear Platen gear
Fig. 2.1-3 Tape Feed Mechanism

II - 4

(2) Adhesive Base Tape Feeding (only for laminated tape cassettes) A laminated tape cassette contains both a transparent laminated tape roll and a separate adhesive base tape roll. When a transparent laminated tape and an adhesive base tape pass through the contact point (between the tape feed roller and tape feed sub roller), they are then bonded together into a single, printed tape. The ink printed on the laminated tape is, therefore, sealed up with the adhesive base tape. (3) Ink Ribbon Feeding (except for non-laminated thermal film tape cassettes and stamp tape cassettes) As the main motor rotates, the ribbon drive cam located at the middle of the gear train rotates counterclockwise. When fitted on the ribbon drive cam, the ribbon take-up roll in the tape cassette also rotates to take up the ink ribbon. To apply proper tension to the ink ribbon between the platen roller and the ribbon drive cam, the feed amount of the ribbon drive cam is slightly greater than that of the tape feed gear. The difference between the feed speeds at the platen roller and at the ribbon drive cam is absorbed by the clutch spring which is integrated in the ribbon drive cam and allows the cam to slip. This way, the ink ribbon is kept tense, which enables the ribbon to clearly separate from the tape at the stabilized angle after printing.

E Half cutter motor assy

D Half cutter holder
Half rock gear Half cutter sensor Tape Separator

Cut line

Fig. 2.1-6 Tape Automatic Half Cutter Mechanism

II - 7

Forced Tape Eject Mechanism
The forced tape eject mechanism consists of the stationary roller unit and the eject roller unit interlocked with the cutter mechanism. Upon completion of printing and tape feeding to operate the cutter mechanism, the cutter helical gear rotates counterclockwise, as described in Subsection 2.1.4. Projection A (which is fitted on cam G of the eject roller unit) operates the eject roller unit to pivot it around shaft H. Immediately before the cutter starts cutting the printed tape, the tape is pressed against the stationary roller by the eject roller and held in place until the cutter completes cutting the tape. These operations of the cutter and the eject roller unit are controlled by cam G. Upon completion of the cutting of the tape by the cutter, released cam G causes the spring to slide the eject roller unit in direction J. At this time, the two cams and springs below the eject roller rotate the eject roller in direction K to eject the tape that has been held in place. Subsequently, the eject roller unit stops at stopper L of the stationary roller unit.

Stationary roller unit

Eject roller unit J
L H Cutter helical gear A G
Fig. 2.1-7 Forced Tape Eject Mechanism

II - 8

Cover Open Button (Cover Lock Button)
Pressing the cover open button (cover lock button) slides the cover button actuator to the left. This presses the cover lock actuator of the cassette cover, releasing the hook to open the cassette cover.

Cover lock actuator

Cover open button (Cover lock button)

Cover button actuator

Fig. 2.1-8 Cover Open Button
Cover Open (Cover Lock) Sensor
The cover open (cover lock) sensor (push switch) is provided on the cassette sensor PCB. Closing the cassette cover puts its sensor tab on the cover open (cover lock) sensor (push switch), signaling that the cassette cover is closed.
Cassette cover Sensor tab Cover open switch (push switch) Cassette sensor PCB
Fig. 2.1-9 Cover Open Sensor

II - 9

DISASSEMBLY AND REASSEMBLY

Precautions on Safety

(1) Disassemble and reassemble the machine on a grounded antistatic sheet. Touching electronic components such as an LSI with an electrified hand will break them, as they are easily affected by static electricity. (2) Wrap the machine in an electrically conductive aluminum sheet before carrying it. (3) When using heating tools such as soldering iron, take care not to thermally break resin components such as a wire, a PCB, and a cover. (4) Take care not to lose small components, such as a screw and a washer, which have been removed to replace other components. (5) Tighten screws according to the list of tightening torque below. List of Tightening Torque

Core Screw E Screw E

Core Bottom cover

Screw D Screw C

Fig. 2.2-7 Removing the Screws Securing the Bottom Cover

II - 14

(3) While pressing the body cover, lift both sides of the bottom cover to remove it. (4) Pull out the power supply harness and connector from the main PCB. Caution: Do not pull the harness; hold the connector to pull it out.

Power supply harness

Main PCB
Fig. 2.2-8 Removing the Power Supply Harness and Connector
(5) While pressing the body cover, lift the front cover diagonally to remove it.

Body cover

Fig. 2.2-9 Removing the Front Cover

II - 15

[6] Removing the Power Supply PCB Assy (1) Remove the two screws securing the inlet bracket. (2) Turn the bottom cover over and remove the inlet unit.

Two screws

Inlet unit
Fig. 2.2-10 Removing the Inlet Unit
(3) Remove the two screws securing the power supply PCB assy. (4) Release the power supply harness from the hook of the bottom cover, and lift the power supply PCB assy to remove it. (5) Lift shield plate B to remove it.

Power supply PCB assy

Shield plate B Bottom cover
Fig. 2.2-11 Removing the Power Supply PCB Assy and Shield Plate B

II - 16

(6) Remove the two screws securing the inlet assy to remove the inlet assy from the inlet bracket.

Inlet bracket

Inlet assy
Fig. 2.2-12 Removing the Inlet Assy
(7) Remove the inlet assy and power supply harnesses from the power supply PCB assy.
Inlet assy harness Power supply harness
Fig. 2.2-13 Removing the Inlet Assy and Power Supply Harnesses

II - 17

[7] Removing the Main PCB Assy and the Mechanical Printing Unit (1) Unplug the following connectors and cables. Caution 1: Be sure to unlock the connector before removing the head flexible cable. Caution 2: Take care not to damage the connectors and cables.

Half cutter sensor connector (P8) Full cutter sensor connector (P7) Sensor PCB harness (P3) Sub PCB harness (P2) Body cover Head flexible cable (P9) Tape feed motor connector (P10)
Tape end sensor connector (P4) Full cutter motor connector (P5)

Connector to be unlocked

Power supply connector (P1)
Half cutter motor connector (P6)

Main PCB assy

Fig. 2.2-14 Removing the Connectors and Cables

II - 18

(2) Remove the three screws securing the main PCB, and lift the top of the main PCB assy to remove it.

Three screws

Mechanical printing unit Shield plate A
Fig. 2.2-15 Removing the Main PCB Assy
(3) Remove the two screws securing shield plate A and the mechanical printing unit to remove them.

Mechanical printing unit

Shield plate A
Fig. 2.2-16 Removing the Mechanical Printing Unit

II - 19

[8] Disassembly of the Body Cover
(1) Remove the two screws from the cassette cover bracket, and lift the cassette cover bracket to remove it.

Cassette cover bracket

Fig. 2.2-17 Removing the Cassette Cover Bracket
(2) Rotate the cover open cam in direction A until it stops and then remove it.

Cover open cam

Fig. 2.2-18 Removing the Cover Open Cam

II - 20

(3) Remove the damper rubber from the cassette cover bracket, and release the hook of the cover open cam to remove the cover open spring.
Damper rubber Cover open cam Cover open spring
Fig. 2.2-19 Removing the Damper Rubber and the Cover Open Spring
(4) Remove the two screws to remove the tape end sensor assy. (5) Release the two hooks of the body cover to the outside of the sensor PCB to remove the sensor PCB assy.

Tape end sensor assy

Sensor PCB assy
Fig. 2.2-20 Removing the Tape End Sensor Assy and the Sensor PCB Assy

II - 21

(6) Remove the two screws to remove the sub PCB assy. (7) Press the cut feed button, the power supply actuator, and the power supply switch button secured on the sub PCB assy from the front of the body cover to remove them. Remove the power supply switch button from the power supply actuator.

II - 24

(4) Remove the two screws to remove the half cutter motor assy. (5) Remove the two screws from the full cutter motor assy, and pull the full cutter motor assy backward to remove it. At this time, take care not to damage the motor worm gear.

Half cutter motor assy

Half frame assy Full cutter motor assy
Fig. 2.2-27 Removing the Half Cutter Motor Assy and the Full Cutter Motor Assy
(6) Remove the two screws from the half frame assy to remove it.
Fig. 2.2-28 Removing the Half Frame Assy

II - 25

[11] Disassembly of the Mechanical Unit
(1) Remove the two screws from the back of the tape feed motor to remove the tape feed motor assy.
Tape feed motor assy Main frame
Fig. 2.2-29 Removing the Tape Feed Motor Assy
(2) Remove the two screws and press the back of the head/roller holder unit to remove it. At this time, detach the tape securing the thermal head cable on the frame assy.
Head assy Head/roller holder unit
Securing tape Thermal head cable Main frame
Fig. 2.2-30 Removing the Head/Roller Holder Unit

II - 26

(3) Pull the release lever spring slightly to remove it. (4) After removing the retaining ring, remove the roller release rod while tilting it in direction A. (5) Pull the release cam out of the shaft. (6) As the release rod roller is secured in place by the elasticity of the resin of the roller release rod, press the shaft of the release rod roller to remove it from the roller release rod.
Roller release rod Release cam
Release rod roller A Retaining ring Release lever spring Roller release rod Main frame Release lever spring
Fig. 2.2-31 Removing the Roller Release Rod

II - 27

[12] Disassembly of the Head/Roller Holder Unit
(1) Remove the retaining ring from the top of the head assy, and pull the roller holder shaft downward to remove it. (2) While tilting the bottom of the roller holder assy toward you, remove the roller holder assy from the head assy.

Do not touch the rubber platen. Touching the platen may impair printing quality.
Retaining ring Platen (rubber)
Head assy Roller holder assy

Roller holder shaft

Fig. 2.2-32 Removing the Roller Holder Assy
(3) Remove the roller holder release spring.
Take care not to lose the roller holder release spring which is removed simultaneously when the roller holder assy is removed.
Roller holder release spring

Roller holder assy

Fig. 2.2-33 Removing the Roller Holder Release Spring

II - 28

Reassembly Procedures [1] Reassembly of the Head/Roller Holder Unit
(1) Apply the specified grease (1 mm3) on each of the top and bottom of the platen shaft of the roller holder assy. (Specified grease: Silicone grease G501)

Top of the platen shaft

Bottom of the platen shaft
Fig. 2.2-34 Applying the Grease on the Platen Shaft
(2) Set the roller holder release spring at the bottom of the shaft of the roller holder assy. With one of the hooks of the roller holder release spring inserted into the groove in the roller holder, insert the platen shaft at the top of the roller holder assy, into the slit at the top of the head assy, while tilting the roller holder assy. Then, insert the shaft at the bottom into the slit at the bottom of the head assy to set the roller holder assy. At this time, check that the release spring is hooked on the correct portion of the head assy. (3) After inserting the roller holder shaft from the bottom of the head assy, set the retaining ring at the top of the shaft. At this state, check that the roller holder rotates smoothly by pressing the back of the roller holder assy.

Retaining ring Head assy

Fig. 2.2-35 Reassembly of the Roller Holder Assy

II - 29

[2] Reassembly of the Mechanical Unit
(1) Set the release rod roller by inserting it into the slit in the roller release rod. (2) Set the release cam on the release lever guide shaft. (3) While tilting the roller release rod, set it on the release cam shaft and the projection on the release cam, and then on the release lever guide shaft. (4) Set the retaining ring on the release lever guide shaft. (5) After hooking the release lever spring on the hole at the bottom of the roller release rod, pull the release lever spring to hook it on the hole in the frame.

3 (6) Apply the specified grease (3 mm ) on each of the inside of the square hole in the roller release rod and the release rod roller. (Specified grease: Silicone grease G501)

Release cam shaft

Release cam
Roller release rod Apply the grease here.

Release rod roller

Release lever guide shaft
Retaining ring Apply the grease here. Release lever spring
Main frame Projection Roller release rod
Release lever spring Main frame
Fig. 2.2-36 Reassembly of the Roller Release Rod

II - 30

PT99007 (7) After passing the harness through the oblong hole in the frame and setting the head/roller holder unit on the boss and the hole in the frame, tighten the two screws. (8) Check that the roller holder rotates smoothly by moving the release cam vertically.

Head/roller holder unit

Head assy

Boss on the main frame

Oblong hole in the main frame
Fig. 2.2-37 Reassembly of the Head/Roller Holder Unit
(9) Set the tape feed motor assy on the frame, and tighten the screws from the back of the frame.
Backlash on the motor gear should be 0.05 to 0.3 mm.

Tape feed motor assy

Fig. 2.2-38 Reassembly of the Tape Feed Motor Assy

II - 31

[3] Reassembly of the Half Frame Assy
(1) With the holes in the frame set on the bosses on the half frame assy, tighten the two screws from the half frame side.
Half frame assy Main frame
Boss on the half frame Boss on the half frame
Fig. 2.2-39 Reassembly of the Half Frame Assy
(2) After applying the specified grease (2 mm3) on the end of the motor worm gear, insert the full cutter motor assy into the square hole in the half frame assy from the back then insert the end of the motor worm gear into the small hole in the half frame. After that tighten the two screws with the end of the motor worm gear pressed downward. (Specified grease: Silicone grease G501) (3) Insert the half cutter motor assy from the back of the half frame assy, and tighten the two screws. Then, apply the specified grease (3 mm3) on the gear of the half cutter motor assy. (Specified grease: Silicone grease G501) Backlash on the motor gear should be 0.05 to 0.3 mm.

Apply the grease here.

Fig. 2.2-40 Reassembly of the Half Cutter Motor Assy and the Full Cutter Motor Assy

II - 32

PT99007 (4) After setting the half cutter sensor assy and the full cutter sensor assy in place, tighten the screw for each of them. Check that the projections on the sensors are inserted into the holes in the half frame.
Observe the colors of their harnesses (half cutter sensor harness: black, full cutter sensor harness: blue).
Full cutter sensor assy Screw Screw Projection Projection Half cutter sensor assy

Half cutter sensor connector (P8)
Full cutter sensor connector (P7) Sensor PCB harness (P3) Sub PCB harness (P2) Body cover Head flexible cable (P9) Connector to be locked Tape feed motor connector (P10)
Tape end sensor connector (P4) Full cutter motor connector (P5) Power supply connector (P1)
Half cutter motor connector (P6) Main PCB assy
Fig. 2.2-53 Setting the Connectors and Cables

Main PCB Assy

Head flexible cable Resistance value

Soldering point

7 digits
Fig. 2.2-53A Changing the Soldering Point

II - 40

[7] Reassembly of the Power Supply PCB Assy
(1) After orienting the inlet assy correctly in the inlet bracket, tighten the two screws.
Always mount the inlet assy in the inlet bracket in the direction shown in the illustration below.
Fig. 2.2-54 Reassembly of the Inlet Assy
(2) Turn the bottom cover over, and set the oblong hole in shield plate B on the projection on the bottom cover to set shield plate B on the bottom cover. (3) After plugging the inlet assy and power supply harnesses into the connectors on the power supply PCB, set the power supply PCB assy on the bottom cover, with shield plate B sandwiched inbetween. Then, tighten the two screws.
Inlet harness Two screws Power supply harness
Power supply PCB assy Shield plate B Bottom cover
Fig. 2.2-55 Reassembly of the Shield Plate B and the Power Supply PCB Assy

II - 41

PT99007 (4) Set the inlet bracket on the right and left projections on the bottom cover, and tighten the two screws.
Fig. 2.2-56 Reassembly of the Inlet Unit
(5) Pass the power supply harness through the hole in the bottom cover, and secure it on the hook of the bottom cover.
Fig. 2.2-57 Securing the Power Supply Harness

II - 42

(6) Store the two large and small cores in the storage space in the bottom cover, and insert the two harnesses (blue and brown) into the slits in the inlet bracket.
Fig. 2.2-58 Running the Inlet Unit Harnesses

II - 43

[8] Reassembly of the Covers
(1) Turn the body cover. After setting the front cover on the two ribs of the body cover, set the front cover on the hook.

Front cover Rib Hook Rib

Fig. 2.2-59 Reassembly of the Front Cover

CONFIGURATION OF THE ELECTRONIC PART
Fig. 3.1-1 shows the configuration of the electronic part. The electronic part consists of the following components.
Half cutter Full cutter Tape end motor motor sensor

Thermal head

Main PCB Switch and LED PCB (Sub PCB) Cassette sensor PCB (Sensor PCB) Inlet Interface connector Half cutter sensor Full cutter sensor

Power supply PCB

Commercially available power PC

Tape feed motor

Fig. 3.1-1 Configuration of the Electronic Part
The main PCB controls all electronic operations. This PCB consists of the CPU, the RAM, the EEPROM, the I/F driver, and the motor driver.

Power Supply PCB

There are two types of power supply PCB (100V system for North America, and 200V system for Europe). This PCB, equipped with a switching regulator, stabilizes commercially available power (AC voltage) to generate DC voltage. The following two voltages are output. VH: 24V DC0.3V Vcc: 5V DC0.25V

III - 1

Cassette Sensor PCB (Sensor PCB)
The cassette sensor PCB (sensor PCB) is equipped with the sensor which detects the cassette tape width and ink ribbon type, and the sensor (mechanical switch) which detects the open cassette cover.

Tape End Sensor PCB

The tape end sensor uses a photo-interrupter to detect the tape end (zebra) pattern.
Switch and LED PCB (Sub PCB)
The switch and LED PCB (sub PCB) is equipped with the ON/OFF and FEED/CUT switches, and the LED (green/red).

Full Cutter Sensor

The full cutter sensor is a sensor (mechanical switch) which detects the position of the full cutter.

Half Cutter Sensor

The half cutter sensor is a sensor (mechanical switch) which detects the position of the half cutter.

Full Cutter Motor

The full cutter motor is the drive to cut the tape. This DC motor runs at a drive voltage of VH (24V).

Half Cutter Motor

The half cutter motor is the drive for the half cutting of laminated tapes. This DC motor runs at a drive voltage of VH (24V).

3.1.10 Tape Feed Motor

The tape feed motor is the drive to feed both the ribbon and the tape. This 25 stepping motor runs at a drive voltage of VH (24V).

3.1.11 Thermal Head

The thermal head has 384 dots1 dot (360 dpi), thin-film configuration and incorporates a drive circuit. The drive voltage is 24V.

III - 2

MAIN PCB
Fig. 3.2-1 shows the main PCB block diagram. The main PCB consists of the following components. (1) CPU (including the ROM and the RAM) (2) SRAM (256 Kbytes) (3) EEPROM (1 Kbits) (4) Power supply, head power supply, FEED key, and LED ON/OFF circuits (5) Full cutter motor drive circuit, half cutter motor drive circuit, and tape feed motor drive circuit (6) Cassette sensor circuit, cover open sensor circuit, automatic full and half cutter sensor circuit, and tape end sensor circuit (7) Head level detection circuit (8) Ambient temperature detection circuit and head temperature detection circuit (9) Reset circuit (10) RS-232C serial interface circuit

III - 5

(3) Printing interruption (margin cutting drive, half cutting drive, and buffer full drive) a) At the interruption of printing, the motor overruns (five through-down pulses) before it stops. If cutter operation is necessary, full or half cutting is performed. The motor rotates counterclockwise for 70 pulses. The motor rotates clockwise to resume printing with 3 dots printed again.

b) c) d)

Fig. 3.2-3 Stepping Motor Drive Circuit
(4) Printing at low speed If the head temperature is 41C or higher during printing on laminated or nonlaminated tapes, low speed printing is performed to ensure printing quality. The through-up pulses (including pre-excitation) and the through-down pulses (including post-excitation) are 56 and 5 pulses, respectively. The rate of low speed printing is 426 pps (2.35 msec/pulse).

III - 6

DC Motor (Cutter Motor) Drive Circuit
Figs. 3.2-4 and 3.2-5 show the DC motor drive circuit and the cutter sensor circuit, respectively. The DC motor performs the full or half cutting of the tape. With full cutting, drive pulses are transmitted from DCR1 and DCF1 of the CPU (#5) to BA6919FP (#6) to drive the motor. With half cutting, drive pulses are transmitted from DCR2 and DCF2 of the CPU (#5) to BA6919FP (#7) to drive the motor. Table 3.2-1 shows the logic of DCR1, DCF1, DCR2, and DCF2.
Fig. 3.2-4 DC Motor Drive Circuit
Fig. 3.2-5 Cutter Sensor Circuit
State OFF Clockwise Counterclockwise Brake
Table 3.2-1 Logic of the DC Motor Control

III - 7

[1] Full Cutter Motor Drive Circuit and Full Cutter Sensor Circuit
The drive sequence of the full cutter motor is shown below. The cutter stays at the home position in the normal state. (The full cutter sensor input level is low.) A tape cutting drive command rotates the DC motor clockwise to cut the tape. At this time, the sensor input level switches from low to high. When this input level switches to low again, it indicates that the cutter has returned to the home position after cutting the tape. When the low level of sensor input is detected, the DC motor brake is applied. When the sensor input level switches to high again during braking, which indicates that the cutter has passed by the home position, the DC motor rotates counterclockwise. When the sensor input level switches to low again, the motor brake is applied to monitor the sensor input level. When the sensor input level switches to high, the DC motor rotates clockwise. When it switches to low, the motor brake is applied. If the sensor input level is low for 100 msec with the brake applied when the above operations are repeated, the cutter is judged as returned to the home position, completing the operations. If an abnormal end shifts the cutter from the home position, the DC motor rotates counterclockwise before printing to return the cutter to the home position (initialization). If the cutter remains at the home position 300 msec or does not return to the home position 1000 msec after the DC motor starts rotating clockwise, it is processed as an error. The DC motor does not operate with the cover open, which is detected by the cover open sensor.

Fig. 3.2-11 Interface Circuit

III - 13

3.2.11 Tape End Sensor Circuit
Fig. 3.2-12 shows the tape end sensor circuit. This circuit detects the voltage of P102 (AN2) to detect the tape end when the zebra tape (black/transparent) at the end of the tape passes by the photosensor.
Fig. 3.2-12 Tape End Sensor Circuit
3.2.12 Switch and LED Circuit
Fig. 3.2-13 shows the switch and LED circuit. This circuit controls the ON/OFF and FEED/CUT switches and the power supply LED. The LED lights up or blinks in green or red according to the state of the machine.
Fig. 3.2-13 Switch and LED Circuit

III - 14

3.2.13 Cover Open Sensor Circuit
Fig. 3.2-14 shows the cover open sensor circuit. This circuit detects the open/closed state of the cassette cover. The sensor input level is low with the cover closed, while it is high with the cover open. With the cover open, all drives are disabled.
Fig. 3.2-14 Cover Open Sensor Circuit

POWER SUPPLY PCB

Commercially available power is supplied to the power supply PCB through the power supply cord, which is inserted into an inlet. The inlet has a total of three wires, one of which is for grounding, and the other two are for inputting AC voltage into the power supply PCB. The switching regulator of the power supply PCB stabilizes the AC voltage to generate DC voltage (VH: +24V 0.3V for the thermal head and the DC motor, and Vcc: +5V DC0.25V for the logic components), supplying it to the main PCB.

III - 15

CHAPTER IV

TROUBLESHOOTING

CHAPTER IV TROUBLESHOOTING
4.1 TROUBLESHOOTING....IV-1 4.1.1 Precautions on Repairing....IV-1 4.1.2 Troubleshooting Flows....IV-1 [1] Printing is performed with specific dots omitted..IV-1 The tape cassette type is not detected correctly...IV-2 [2] [3] The LED does not light up...IV-2 [4] No printing is performed....IV-3 [5] The interface malfunctions...IV-3 [6] The tape is not cut....IV-4 [7] The tape is not fed correctly...IV-5 [8] Half-cut is not possible...IV-7 [9] The tape is not ejected forcibly...IV-8

Precautions on Repairing

(1) Before testing electric conductivity with a circuit tester, unplug the power supply cord and check that power is not supplied to the machine. (2) If a printer failure occurs, unplug the thermal head cable and wait until the thermal head and related circuits are restored to execute normal operation. (3) Use a specified AC adapter to supply power to the machine.

PARTS REFERENCE LIST

MODEL: PT-9200PC (For Europe / China / Hong-Kong

Taiwan / Australia)

NOTES FOR USING THIS PARTS REFERENCE LIST
1. In the case of ordering parts, it needs mentioning the following items: (1) Code (2) Q'ty (3) Description (4) Symbol (PCB No., Revision , and Parts location mounted on the PCB.) Note : No orders without Parts Code or Tool No. can be accepted.
[ Example ] (4) (1) (2) (3)

REF. NO.

SYMBOL

DESCRIPTION

REMARKS
Revision No. : marked on the printed circuit board.

B48J300 - A

Design change indication Specification No. Pattern alteration No. Circuit board No.
2. Design-changed parts: When the parts are changed, any one of the following symbols is indicated in the REMARKS column. CHNG#A : compatible between old and new CHNG#B : replaceable from old to new CHNG#D : incompatible ADD : newly established 3. The original of this list was made based on the information available in September,1998. 4. Parts are subject to change in design without prior notice.

CONTENTS

1. PRINT MECHANISM...1 2. COVERS...3 3. MAIN PCB...5 4. DETECTORS....7 5. POWER SUPPLY PCB....7 6. ATTACHMENTS....9 7. PRINTED MATTERS...9 8. PACKING MATERIALS...11

1. PRINT MECHANISM

PT99021
PT-9200PC (Europe) 5V2-601-045
REF.NO. CODE LA2072001 Z26576001 Z26581001 UB3848001 LA0014001 LA2031001 UTUT0591001 LA2071001 UT0901001 UT0902001 UT0903001 UBUT0872001 0A4301005 UT0904001 UT0917001 UT0958001 UT0961001 UT0855001 UTUT0921001 LA4063001 UT0932001 UT1401001 0A4401205 UT0933001 UB3848001 UT0934001 UB3848001 0A3300605 U62189000 UN7937000 Q'TY DESCRIPTION 1 MAIN FRAME PP ASSY 1 TAPE FEED MOTOR, BP242516M08 (OLD : Refer to the T/I #.PT2000020) 1 TAPE FEED MOTOR, BP242516M12-PP (NEW : From APR. 2000. Refer to the T/I #.PT2000020) 2 SCREW, PAN M2.6X3.ROLLER HOLDER ASSY (SP) (OLD : Refer to the T/I #.PT2000020) 1 ROLLER HOLDER ASSY (SP) (NEW : From APR. 2000. Refer to the T/I #.PT2000020) 1 ROLLER HOLDER SHAFT 1 RETAINING RING, E2.HEAD ASSY KSH384 BW (SP) (OLD : Refer to the T/I #.PT2000020) 1 HEAD ASSY KSH384 BW3 (SP) (NEW : From APR. 2000. Refer to the T/I #.PT2000020) 1 ROLLER HOLDER RELEASE SPRING 1 RELEASE CAM 1 ROLLER RELEASE ROD 1 RELEASE ROD ROLLER 1 RETAINING RING, E2.RELEASE LEVER SPRING PP 2 SCREW, PAN (S/P WASHER) M3XHALF FRAME ASSY 1 HALF ROCK GEAR 1 HALF CUTTER SENSOR ASSY 1 FULL CUTTER SENSOR ASSY 2 SCREW, PAN M1.7XCUTTER HELICAL GEAR ASSY 1 RETAINING RING, EHALF CUTTER ASSY 1 CUTTER ASSY (SP) 1 HALF SPACER 1 EJECT UNIT ASSY 2 SCREW, PAN (S/P WASHER) M4XFULL CUTTER MOTOR ASSY 2 SCREW, PAN M2.6X3.HALF CUTTER MOTOR ASSY 2 SCREW, PAN M2.6X3.SCREW, PAN WASHER M3X6D 1 PLATEN PROTECT PAD 1 GREASE G501, 1KG

PT2000026

CHNG#A

PT-9200PC EU/HKG/TWN/CHN

5V2-601-045

2. COVERS

PT99001

PT-9200PC EU

5V2-601-061
REF.NO. 37 SYMBOL CODE LA3931001 UT0937001 UT0938001 UT0939001 UT0940001 UT0941001 UT0942001 UT0551001 UT0944001 UT0945001 UT0995001 UT0996001 UT0946001 UT0947001 UT0948001 UT0997001 UT0998001 UT0949001 UT0951001 UT0952000 UT0953000 UT0955001 UB085270815 0A085270815 UT0578001 LJ4421001 UT0267001 Q'TY 1 DESCRIPTION BODY COVER POWER SUPPLY SWITCH BUTTON POWER SUPPLY ACTUATOR CUT FEED BUTTON, BLUE6189 COVER LOCK BUTTON, GRAY1395 COVER BUTTON ACTUATOR LOCK LEVER SPRING CASSETTE COVER PP EC, GRAY1463 CASSETTE PRESSER, GRAY1395 CASSETTE SPRING COVER LOCK ACTUATOR, GRAY1395 COVER LOCK SPRING FRONT COVER PP US, GRAY1395 BOTTOM COVER PP US, GRAY1395 CASSETTE COVER BRACKET, GY1395 DAMPER RUBBER COVER OPEN CAM COVER OPEN SPRING INLET BRACKET SHIELD PLATE B SHIELD PLATE A LOWER COVER, GRAY1395 LOWER FOOT TAPTITE, BIND B M2.6X10 TAPTITE, BIND B M2.6X8 TAPTITE, BIND B M2.6X8 TAPTITE, BIND B M2.6X8 SCREW, PAN (S/P WASHER) M4X8 TAPTITE, BIND B M2.6X8 TAPTITE, BIND B M2.6X10 SCREW, FLAT B M3X10 TAPTITE, BIND B M2.6X8 TAPTITE, BIND B M2.6X8 TAPTITE, BIND B M2.6X8 TAPE CAUTION LABEL PP EC MARKING LABEL N/S (EXCEPT TAIWAN) LETTERING STICK TZ36 (EXCEPT TAIWAN)

PT2000024

REMARKS CHNG#A
PT-9200PC EU/HKG/TWN/CHN/AUS

3. MAIN PCB

PT2000020

PT-9200PC (Europe)

5V2-601-101
REF.NO. 1-2 1-SYMBOL B55L024-1 B55L024-1 CODE LABEL 01 #5 #5 #1,#2 CODE UT0839001 LA2068001 UT0550001 LA2028001 UT0804001 Q'TY DESCRIPTION 1 MAIN PCB ASSY PROPC (SP) ( OLD : Refer to the T/I #. PT2000020) 1 MAIN PCB ASSY PROPC (SP) (NEW : From APR. 2000. Refer to the T/I #. PT2000020) 1 MCU:M30622M8-186 (OLD : Refer to the T/I #. PT2000020) 1 MCU:M30622M8-773 ) (NEW : From APR. 2000. Refer to the T/I #. PT2000020) 2 SRAM:51008BFP55

REMARKS ADD

4. DETECTORS

5V2-601-100

5. POWER SUPPLY PCB

5V2-601-102

REF.NO. SYMBOL B55L025-1 B55L026-1 B55L028-1 CODE UT0840001 UT0841001 UT0546001 UT0830001 Q'TY DESCRIPTION SUB PCB ASSY PROPC (SP) SENSOR PCB ASSY PROPC (SP) TAPE END SENSOR ASSY (SP) INLET ASSY PP

PT99024

REF.NO. SYMBOL MPW1433 MPW1533 CODE UT0844001 UT0843001 Q'TY DESCRIPTION 1 PS PCB ASSY, 230V (SP) (EUROPE/AUS/CHN/HKG) 1 PS PCB ASSY, 100-120V (SP) (TWN)

PT2000013

REMARKS CHNG

6. ATTACHMENTS

5V2-601-910

7. PRINTED MATTERS

PT2001008

5V2-601-920

REF.NO. 1A 1B 1C 1D 1E 1F 1G 1H 3 SYMBOL CODE UH1052001 UH1053001 UH1054001 UK4094001 U34322001 U34320001 UH1051001 UH1055001 UN7385001 UT0558001 LA0985001 Q'TY 1 DESCRIPTION AC CORD, VDE (DEU/FRA/NLD/SWE/FIN/ESP) AC CORD, SEV (CHE) AC CORD, BS (GBR/IRL/HNG) AC CORD, DEMKO (DNK) AC CORD #6, ISRAEL (ISR) AC CORD #4, BS (ZAF) AC CORD, UL/CSA, (TWN) AC CORD, SAA (AUS) I/F CABLE WIN/MAC, SERIAL I/F CD-ROM ASSY PP EC, (EU/HKG/TWN/CHN/AUS) CD-ROM 2400 ASSY, US (TWN)

ADD CHNG

REF.NO. A SYMBOL CODE UT1000001 LA2022001 UH3662001 UH3663001 UB2565001 UB3650001 UH3851001 LA4808001 UB3650001 UH3851001 LA4808001 LA1999001 UU0605001 UN4239001 UN4605001 UT0535001 LA1184001 LA0050001 LA2367001 LA4997001 Q'TY DESCRIPTION USER'S MANUAL PP, (EUROPE/HKG/AUS) USERS MANUAL PP, (TWN) WARRANTY CARD UK-A (GBR) WARRANTY CARD UK-B (GBR) WARRANTY CARD, SWEDISH (SWE) WARRANTY CARD, FRENCH (FRA) WARRANTY CARD, (DEU/GBR/FRA/IRL/NLD/CHE/DNK/SWE/ESP) WARRANTY CARD, (HKG) WARRANTY CARD, FRENCH (FRA) WARRANTY CARD, (DEU/GBR/FRA/IRL/NLD/CHE/DNK/SWE/ESP) WARRANTY CARD, (HKG) WARRANTY CARD, (TWN) WARRANTY CARD, SPA (ESP) TAPE CATALOG UK, (EUROPE/HKG) TZ TAPE CATALOG, AUS (AUS) UNPACKING INSTRUCTION PP INSERTION IN EC, (EUROPE/HKG/AUS) HALF INSERTION US, (TWN) INSERTION SHEET IE (EUROPE/HKG/TWN/CHN/AUS) EMC INSERTION SHEET, (EUROPE)

8. PACKING MATERIALS

5V2-601-930
REF.NO. CODE UT0560001 LA0087001 UT0984001 UT0985001 UT0594001 UN5224001 UT0596001 UT0597001 Q'TY DESCRIPTION CARTON, PT-9200PC (EUROPE/HKG/TWN/AUS) CARTON, PT-9200PC (CHN) STYROFOAM PAD PP BAG, 250X600H (BODY) BAG, 130X350 (AC CORD) BAG, 215X360H (USERS MANUAL) STYROFOAM PAD B CORRUPAD PP
PT-9200PC EU/HKG/TWN/CHN/AUS 5V2-601-930
Sept., `98 5V2079BE0 Printed in Japan