Brother 1250 Manuel de service

P-touchSERVICE MANUALMODEL: PT-1100/1130/1170/1180/11QPT-1250/1160ST-1150(Heavy Duty LabelerTM)REVISED 1

I-4Fig. 1.1-2 Key Arrangement (2)

I-5Fig. 1.1-2 Key Arrangement (3)

I-6 1.2 ELECTRONICS SPECIFICATIONS 1.2.1 Character Generator(1) Internal characters U.K./ FRA/ BEL (PT-1250) 205 GER (PT-1250) 213 U.S.A./ CAN./AUS.

CHAPTER IIMECHANISMS

CONTENTSCHAPTER II MECHANISM... II-12.1 THEORY OF OPERATION ...

[ 8 ] Installing the tape cassette, the batteries, and the cassette cover ASSY... II-26[ 9 ] Demonstration print and final check...

II-1CHAPTER II MECHANISM 2.1 THEORY OF OPERATION 2.1.1 Print Mechanism(1) Structure of Thermal HeadThis machine uses thermal transfer printing. T

II-2 2.1.2 Platen Roller, (Tape Feed) Sub Roller Setting & Retracting MechanismThis mechanism consists of the holder cam (cassette cover ASSY) an

II-3 2.1.3 Tape & Ribbon Feed MechanismThis mechanism consists of a DC motor, gear train, and roller holder ASSY.(1) Tape FeedingAs the tape feed

II-4(2) Adhesive Base Tape Feeding (only for laminated tape cassettes)A laminated tape cassette contains both a transparent laminate tape roll and a s

SERVICE MANUALMODEL: PT-1100/1130/1170/1180/11Q PT-1250/1160 ST-1150(Heavy Duty LabelerTM)

II-5 2.1.4 Tape Cutter MechanismThe tape cut unit consists from the cutter case ASSY and the board.Tape that finished printing is fed out from the ta

II-6 2.1.5 Cutter Safety Lock MechanismWhen the cassette cover ASSY is opened and no tape cassette is loaded, the roller holder ASSYis retracted from

II-7 2.1.6 Interlock Mechanism of the Roller Holder(1) When the cassette case ASSY is opened, then the holder cam attached at back side ofcassette co

II-8 2.2 DISASSEMBLY & REASSEMBLY 2.2.1 Disassembly Procedure [ 1 ] Removing the cassette cover ASSY, the tape cassette and the batteries(1) T

II-9 [ 2 ] Removing the bottom cover, the cutter case ASSY and the board(1) Place the machine upside down.(2) Pull out the cutter case ASSY and the

II-10 [ 3 ] Removing the frame ASSY(1) Remove the two motor harnesses from the sub PCB by melting the solder.(2) Remove the three screws and remove

II-11 Disassembling the Frame ASSYRemoving the DC motor ASSY(1) Remove the two screws from the frame ASSY and take out the motor ASSY.Fig. 2.2-6

II-12Removing the roller holder ASSY and thermal head ASSYWhen handling the thermal head ASSY, do not touch the thermal head by hand. Otherwise, it ma

II-13 [ 4 ] Removing the terminal press cover(1) Remove the terminal press cover by releasing the hooks from the grooves of the bottomcover.You can

II-14 [ 5 ] Removing the battery terminals(1) Remove the battery terminal B (+,-) from the bottom cover.(2) After disengaging the hook of the batter

© Copyright Brother 2002All rights reserved.No part of this publication may be reproduced in anyform or by any means without permission in writingfrom

II-15 [ 6 ] Removing the sub PCB(1) After removing the battery terminal (+), the battery terminal (-), take off a screw and removethe sub PCB.Note:

II-16 [ 7 ] Removing the main PCB and the rubber 41 key (PT-1100/1130/1170/S1180/11QI-1150)Remove the four screws, then take off the main PCB and th

II-17 [ 8 ] Removing the main PCB, the rubber 40 key and the jog dial (PT-1250/1160)Remove the four screws, then take off the main PCB, the rubber 40

18II- 2.2.2 Reassembly Procedure [ 1 ] Installing the rubber 41 key and main PCB (PT-1100/1130/1170/1180/11Q/ST-1150)(1) Turn the upper cover upsid

19II- [ 2 ] Installing the jog dial, the rubber 40 key and the main PCB (PT-1250/1160)(1) Turn the upper cover upside down and place the rubber 40 ke

20II- [ 3 ] Installing the sub PCB(1) Relay harness is solder connected to the sub PCB.(2) After pushing the “A” section of battery terminal (+) of

21II- [ 4 ] Installing the battery terminals(1) Put three battery terminals A (+,-) into the bottom cover from the direction of arrow.(2) Turn the b

22II- [ 6 ] Installing the frame ASSY(1) Install the cutter lever into the bottom cover.(2) If the frame ASSY has been disassembled, assemble the co

23II- Assembling the components of the motor holder ASSYInstalling the thermal head ASSY and the roller holder ASSY(1) Install the thermal head to

24II-Installing the DC motor ASSY(6) Tighten the DC motor to the frame ASSY with the two screws. Be careful to the direction ofthe motor harnesses.Tig

PREFACEThis publication is a service manual covering the specifications, theory of operation,disassembly/reassembly procedure, and troubleshooting of

25II- [ 7 ] Installing the cutter case ASSY, board and the bottom cover(1) Hold the bottom cover as shown below, then connect the thermal head flat

26II- [ 8 ] Installing the tape cassette, the batteries, and the cassette cover ASSY(1) Hook “A” of the cassette cover is set at the boss of bottom

27II- [ 9 ] Demonstration Print and Final CheckFollowing items are verified lastly after completed the assembly.1. Press the “On/Off ( )” key.2. W

28II-9.2.1.1. Country DisplayThe country display displays the country specifications as designated by the solderpoints (1 ~ 3.)[UK, GER, FRE, BEL, US

29II-9.2.1.4. LCD Check DisplayHere, check for missing dots and the display function of the LCD.The LCD check 1 <Fig. 4> is displayed when depr

30II-Fig. 10Fig. 11When all key checks were completed, then displays Fig. 12 and cut the tape by printing<<OK>>.Fig. 12Shifts to “9.2.4 C

31II-Fig. 17 is displayed when depressed “ ” key to feed the tape. “3” is displayed aftercompleted the feed. Fig. 17 Shifts to “28.2.5 PRINT 1

32II-9.2.7. MOTOR Mode “7” Key: Used for the DC motor speed adjustment.This mode is used only when the print length accuracy or tape feed length accu

33II- 2.3 TROUBLESHOOTINGThis section gives the service personnel some of the troubleshooting procedures to be followed ifan error or malfunction occ

34II- 2.3.3 Error Message DisplayError is displayed when the troubles as shown below happen.“ERROR” display for each countrywill be displayed as foll

CHAPTER ISPECIFICATIONS

35II- 2.3.4 Troubleshooting Flows [ 1 ] Tape feeding failure

36II-

37II- [ 2 ] Printing failure

38II-

39II- [ 3 ] Powering failure (Nothing appears on the LCD)

40II- [ 4 ] No key entry possible

CHAPTER IIIELECTRONICS

CONTENTSCHAPTER III ELECTRONICS... III-13.1 OVERVIEW ...

3.3 TROUBLESHOOTING ... III-163.3.1 Precautions ...

III-1CHAPTER III ELECTRONICS 3.1 OVERVIEW 3.1.1 Configuration of the Electronic PartFig. 3.1-1 shows a block diagram of the control electronics o

CONTENTSCHAPTER I SPECIFICATIONS... I-11.1 MECHANICAL SPECIFICATIONS ...

III-2 3.2 MAIN PCB 3.2.1 Main PCB Block DiagramFig. 3.2-1 shows the Main PCB block diagram. The PCB consists of the following:(1) CPU (including a

III-3 3.2.2 CPU and LCD DriverThe CPU (MU101C30A) is a 8bit microprocessor produced by CMOS silicon gate process, whichintegrates a 32 kilobyte-ROM a

III-4 3.2.3 Key Contacts Matrix [ 1 ] Key contacts matrixOn the main PCB is a key contacts matrix that is a set of carbon-printed 41 key (PT-1250/1

III-5 [ 2 ] Solder pointsFig. 3.2-5 shows a circuit diagram relating to the keyboard and solder points. Solder points 1through 4 are connected to s

III-6 [ 3 ] Jog dial (Only for PT-1250/1160)The two input signal (JOG0, JOG1) waveforms are varied by rotating the JOG dial. The rotationaldirections

III-7 3.2.4 On/Off Key/Reset Circuit and Power Saving Circuit [ 1 ] Power On/Off circuitFig. 3.2-8 shows a circuit diagram of the power On/Off key.

III-8 [ 2 ] Power saving circuitFig. 3.2-10 shows a circuit diagram of the power saving circuit. If you power off the machine withthe power On/Off

III-9 3.2.5 Motor Control CircuitFig. 3.2-11 shows the motor drive control of the DC motor which feeds tape.Through P10, the CPU produces a start/sto

III-10 3.2.6 Thermal Head Drive CircuitFig. 3.2-13 shows the thermal head drive circuit.The print head used in the integrates a heat generator (consi

III-11 3.2.7 Voltage Detection Circuit and Temperature Sensor circuitFig. 3.2-15 and Fig. 3.2-16 (See next page) show the voltage detection circuit a

I-1CHAPTER I SPECIFICATIONS 1.1 MECHANICAL SPECIFICATIONS 1.1.1 External AppearanceFig. 1.1-1 External Appearance(1) Dimensions (W x D x H) 154

III-12 [ 2 ] Ambient temperature sensor circuitThis circuit is composed of resistors R12 and a thermistor TH2. It converts the resistance of theTH2

III-13 3.2.8 Oscillation CircuitFig. 3.2-17 shows the oscillation circuit.This circuit contains an oscillator and generates an oscillation at 8 MHz w

III-14 3.2.9 Power Supply CircuitFig. 3.2-18 shows the power supply circuit. A 3-terminal regulator RH5RL50A stabilizes thebattery output or the AC

III-15 3.2.10 Cassette Sensor CircuitFig. 3.2-20 shows the cassette sensor circuit. This circuit detects each of the five sensor switcheswhich is pus

III-16 3.3 TROUBLESHOOTINGThis section gives the service personnel some of the troubleshooting procedures to be followed ifan error or malfunction oc

III-17 3.3.3 Troubleshooting Flows [ 1 ] Tape feeding failure [ 2 ] Printing failure

III-18 [ 3 ] Powering failure (Nothing appears on the LCD.)

III-19 [ 4 ] Abnormal LCD indication

III-20 [ 5 ] No key entry possible [ 6 ] Tape cassette type not identified

APPENDICESCircuit DiagramsA: MAIN PCB CIR 1100(PT-1100/1130/1170/1180/11Q/ST-1150)B: MAIN PCB CIR 1250(PT-1250/1160)C: SUB PCB CIR 1250

I-2 1.1.3 Display(1) Display type Liquid crystal display (LCD)(2) Number of columns 8 columns x 1 row (See Fig. 1.1-2.)(3) Number of indicators 10 (S

Jan., 20028V2010BE1Printed in Japan

I-3Fig. 1.1-2 Key Arrangement (1)