Instruction/ maintenance manual of the product CBM-710/720 Citizen Systems
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DO T MA TRIX PRINTER MODEL CBM-710/ 720 Re v .1.00 Ne wly issued on Mar , 1989 Ser vice Man ual.
i CONTENTS Chapter 1. Printer Disassembly and Assembly ....................................................................................... 1 1 How to Remove Upper Cover and Rear Cover ...............................................................
CBM-710/720 Service Manual 1 Chapter 1 Printer Disassebly and Assembly.
CBM-710/720 Service Manual 2 1. How to the Upper Cover and Rear Cover 1) Unfasten 4 screws (M3 x 6) as shown in the figure and lift the upper cover upward, while disconnecting the connector . 2) Unfasten 4 screws (M3 x 6) at both sides and remove the rear cover .
CBM-710/720 Service Manual 3 2. How to Remove the Printer Mechanism • Remove the upper cover . • Unfasten 2 screws (M3 x 14) as shown in the figure. • Lift the printer mechanism in the arrow position for removal. Printer Mechanism 3. How to Remove the Contr ol Board • Remove the rear cover .
CBM-710/720 Service Manual 4 4. How to Remove the Power Board and AC Power Unit 1) How to Remove the Power Board • Disconnect 2 connectors. • Unfasten 2 screws (M3 x 8) and 2 tapping screws (M3 x 8). • Remove the board, paying attention to the lead wire.
CBM-710/720 Service Manual 5 5. How to Remove the Auto Cutter Unit (720) • Remove the printer mechanism from the main body . • Remove 2 E3’ s as shown in the figure. • Pull out the shaft in the arrow direction for removal of the auto cutter unit.
CBM-710/720 Service Manual 6 Chapter 2 Cir cuit Description.
CBM-710/720 Service Manual 7 1. Outline A block diagram of this printer is shown in Fig. 1-1. It consists of the control circuit centered around CPU, ROM, RAM and peripheral circuits, interface circui.
CBM-710/720 Service Manual 8 2. CPU Peripheral Cir cuits 1) CPU and ROM/RAM The CPU M50734SP has a external memory type. Lower 8-bit address is fetched via the A0/D0 bus line by the 8-bit latch LS373. The 128-KB ROM and 64-KB RAM are used for performing the backup operation for power failure by the super capacitor .
CBM-710/720 Service Manual 9 As can be seen in the timing chart, it detects that Vcc decreased up to about 4.5 V for power failure and generates the power failure interrupt signal and sends it to CPU. Upon receipt of the signal, CPU transmits the data in its buffer to RAM.
CBM-710/720 Service Manual 10 3. Printer Contr ol Cir cuit 1) When L is output to the CPU port P31, the motor rotates and a timing pulse appears at the DP terminal of CN5. 2) After rotation of the motor , printing starts in timing at which the port P34 is changed into L from H by the home pulse of the printer .
CBM-710/720 Service Manual 11 4. Cutter Control Cir cuit Cutter Side Fig. 4-1 Cutter Control Cir cuit The cutter control circuit is as shown in Fig. 4-1. In the cutter side, M indicates the motor and S the home switch. The motor can make forward and reverse rotation by controlling X and Y inputs of the control circuit as shown in the table below .
CBM-710/720 Service Manual 12 5. Interface with Operation Panel As shown in Fig. 5-1, the operation panel circuit has the on-line switch and line feed switch. Each switch is connected to CPU input ports and each LED is connected through the driver to CPU output ports.
CBM-710/720 Service Manual 13 6. Paper End Sensor Cir cuit Fig. 6-1 shows the paper end sensor circuit. The reflection type photo-interrupter is used as a sensor . When some paper is still left, the light reflected by paper strikes upon the photo-transistor; thus, the collector of the photo- transistor is L.
CBM-710/720 Service Manual 14 7. Parallel Interface Circuit This circuit conforms to the standard interface. Description will be made for each signal of interface connector as follows. Fig. 7-1 shows the data input and print timing chart and Fig. 7-2 the parallel interface circuit diagram.
CBM-710/720 Service Manual 15 Fig. 7-2. Parallel Interface Cir cuit Vcc R15 33k IC10 7406 IC137406 RA5 CN3 16P CN2 IC1 50734SP 12-33k Ω.
CBM-710/720 Service Manual 16 8. Serial Interface Cir cuit As the serial interface specification, RS-232C and 20 mA current loop can be switched by the slide switch.
CBM-710/720 Service Manual 17 Fig. 8-1 Serial Interface Circuit Dia gram.
CBM-710/720 Service Manual 18 9. RS422A Interface Circuit The RS422A interface circuit diagram is shown in Fig. 9-1. As can be seen in the figure, when TXD CONTROL is L, the line driver IC14 becomes enable, going into the ready-to-receive state. At this time, the line receiver IC15 becomes disable.
CBM-710/720 Service Manual 19 10. Power Cir cuit This power circuit supplies DC 5 V for the control circuit and DC 24 V for driving the printer mechanism. When the POWER switch is turned on, the AC voltage is applied to the transformer T after noise is eliminated by the capacitors C1 to C4 and noise filter NF .
CBM-710/720 Service Manual 20 Chapter 3 Auto Cutter.
CBM-710/720 Service Manual 21 1. Maintenance and Handling 1) Precautions for Handling (1) Precautions for use Do not cut the paper other than the specified recording paper or do not pull the recording paper on the way of cutting; otherwise, resulting in damage of the blade section and reduction of service life.
CBM-710/720 Service Manual 22 2. Mechanism and Principle of Operation 1) Outline of Mechanism The AC-2 and AC-3 are designed as the DP-505 and DP-600 small dot printers and characterized by compact and lightweight types. The mechanism of this unit consists of 4 blocks; frame, power transmission mechanism, detector , and movable blade mechanism.
CBM-710/720 Service Manual 23 2)-3 Movable blade mechanism The movable blade is changed into a linear motion by the crank pins and starts cutting the recording paper . (1) Full cut Cam Switch Cutter Gear Fig. 2 Fig. 3 Blade Crank Pin Fig. 4 At full cut, the crank pins turn one time and return to the home position.
CBM-710/720 Service Manual 24 3. Repairing (T roubleshooting) For troubleshooting, the repairing method will be explained by classifying the items as shown below . Make sure of the cause according to the items and find out the trouble portions for repairing.
CBM-710/720 Service Manual 25 1. The motor does not rotate. 2. The recording paper cannot be cut. Phenomenon Condition Cause Check Point and Method T roubleshooting • The motor does not rotate even if the rotation command is entered. • The motor operates temporarily and stops when the rotation command is entered.
CBM-710/720 Service Manual 26 4. Disassembly/Assembly 1) Disassembling Procedure Perform the disassembly in a reverse manner of the assembling procedure. 2) Assembling Procedure Perform the assembly according to the assembling procedure as shown in the separate table.
CBM-710/720 Service Manual 27.
CBM-710/720 Service Manual 28 Chapter 4 Cir cuit Diagram.
CBM-710/720 Service Manual 29 Fig. 4-1. P ower Supply Cir cuit Diagram CBM710/720-001-00.
CBM-710/720 Service Manual 30 Fig. 4-2. Noise Filter Circuit Diagram CBM710/720-002-00 Fig. 4-3. Operation P anel cir cuit Diagram CBM710/720-003-00.
CBM-710/720 Service Manual 31 Fig. 4-4. P aper End Sensor Cir cuit Diagram CBM710/720-004-00 Fig. 4-5. OP Junction Cir cuit Diagram CBM 710/720-005-00 Cord Assy CA5 PC Board PC710-06.
32 CN2 CN3 16P RA5 12-33k Ω 13, 18 12 10 11 32 1 31 1 4 6 5 2 7 3 +5V PE ACK → BUSY F A UL T STB RESET 2 3 4 5 6 7 8 9 14, 16, 30 33, 19-29 17 14 6 13 7 12 4 11 5 3 1, 8, 9, 10 15 2 16 15 14 13 12.
33 14 6 13 7 12 4 11 5 3 1, 8, 9, 10 15 2 Printer CN4 17P 1 2 3 4 5 6 7 8 9 1 5 4 6 7 2 Printer P anel Ope. Winder Cutter CN5 9P CN6 7P CN7 2P CN8 4P 2 1 1 2 3 4 12 6 CN2 CN3 Vcc Vcc Vcc VP Vcc Vcc VP Vcc 22 Vcc Vcc Vcc Vcc Vcc Vcc Vcc DS2 RA5 8-10 RA2 9-10K Ω IC8LS04 Vcc Vcc Vcc F A UL T PE 12 01 C.
34 14 6 13 7 12 4 11 5 3 1, 8, 9, 10 15 2 Printer CN4 17P 1 2 3 4 5 6 7 8 9 1 5 4 6 7 2 Printer P anel Ope. Winder CN5 9P CN5 7P CN7 2P 2 1 Cutter CN8 4P 1 2 3 4 CN2 IC14 SN75113N ( ) Vcc 18 60.8 IC15 SN75175N ( ) Vcc 18 60.8.12 CN3 1 RD 10 1 2 12 9 12 13 10 10 11 11 6 5 3 3 4 4 13 14 15 10 R32 C20 R38 R39 47K R34 4.
CBM-710/720 Service Manual 35 Chapter 5 Parts List.
CBM-710/720 Service Manual 36 P AR TS LIST 1. Exploded V iew CBM-710/720 Ref. No. 1 2 3 4 5 6 7 8-1 12 11 13 14 15 16 17 18-1 -2 19 20-1 -2 21 22 23 24 Parts No.
CBM-710/720 Service Manual 37 P AR TS LIST CBM-710/720 Ref. No. 25 26-1 -2 27-1 -2 -3 30 31 32 33 34 35 37 38 40 Parts No. Description Q’ty Remarks E 4000-530 E 6204-590 E 6204-600 E 6204-700 E 6204.
CBM-710/720 Service Manual 38 CBM-710,720 27-2 27-1 26-2 26-1 23 34 24 25 33.
CBM-710/720 Service Manual 39 CBM-710 20-1 4 34 32 5 32 3 37 18-1 18-2 19 2 8-1 34 35 38 17 7 31 6 13 30 30 11 30 12 16 35 14 15 33 34 38 35 21 34 22.
CBM-710/720 Service Manual 40 CBM-720 37 20-1 20-2 4 34 32 5 18-1 18-2 19 32 3 2 8-1 34 35 17 38 1 7 31 30 11 30 12 16 30 13 6 35 38 35 14 15 33 34 21 34 22.
CBM-710/720 Service Manual 41 P AR TS LIST 2. Block Diagram CBM-710/720 Ref. No. CA 1 2 3 4 5 7 8 Parts No. Description Q’ty Remarks E 6100-530 E 6100-535 E 4004-180 E 4001-740 E 4001-745 E 4800-975.
CBM-710/720 Service Manual 42 BLOCK DIAGRAM.
CBM-710/720 Service Manual 43 P AR TS LIST 4. Power Supply Unit CBM-710/720 Ref. No. IC 1 TR 1 2 3 D 1-4 6-9 5 ZD R1 2 3 4 5 C1 2 3 4 5 6 7 CN 13 F1 Parts No.
CBM-710/720 Service Manual 44 PC BOARD PC710-07A D1 - D4, D6 - D9 : GP15B D5 : 1S1588 ZD1 : RD5. 6EB2 P AR TS POSITION : POWER SUPPL Y UNIT INSULA TOR Scre w M3x8/2 Screw M3x6/2 Cord assy CA 8.
CBM-710/720 Service Manual 45 P AR TS LIST 4. Noise Filter Unit CBM-710/720 Ref. No. SW 1 F1 NF C 1,2 3,4 3,4 Parts No. Description Q’ty Remarks E 4003-495 E 4005-470 E 4005-475 E 4006-220 E 4009-27.
CBM-710/720 Service Manual 46 P AR TS POSITION : NOISE FIL TER UNIT FUSE HOLDER FUSE EA WK-500mA : 220-240V 5MF-1A : 100/115V PO WER SWITCH (MOUNTED ON BA CK) PC BO ARD PC710-08 C .
CBM-710/720 Service Manual 47 P AR TS LIST 5. Control Board Assy : RS232C CBM-710/720 Ref. No. IC 1 2 3 4 5 6 7 8, 13 9 10 11 12 14, 15 TA 1 2 TR 1 2-5 8,9 12,13 101-103 6,10 7,1 1 ZD 1 D 1-3 PHC 1 RA 1,5 2,3 4 Parts No.
CBM-710/720 Service Manual 48 P AR TS LIST CONTROL BOARD ASSY : RS232C CBM-710/720 Ref. No. R1 2 3,40,101 4 5,7,15 32,43 102-104 6 8,17,41 42 9,1 1,18 19,24-26 31,33-36 38 10 12 13 14 16 20,21 27,28 22,23 29,30 37,39 C 1,3,19 2 4 5 6,102 7 8,16 17,101 9,10 1 1,14 20 12,13 15 18 21,22 25,26 23 24,27 Parts No.
CBM-710/720 Service Manual 49 P AR TS LIST CONTROL BOARD ASSY : RS232C CBM-710/720 Ref. No. CP 1,5,8 1 1,13 OSC L 1,2 BZ DS 1,2 SW 1 CN 1 2 4 5 6 7 8 9 Parts No.
CBM-710/720 Service Manual 50 with Back Up (B) without Back Up (N) Jumper 1 Open C-N Short Jumper 2 C-B Short C-N Short Jump W ire Setting : RS232C P AR TS POSITION : CONTROL BOARD UNIT RS232C.
CBM-710/720 Service Manual 51 P AR TS LIST 6. Control Board Assy : Parallel CBM-710/720 Ref. No. IC 1 2 3 4 5,14 6 7 8 9 10,13 11 12 TA 1 2 TR 1 2-5,8 9 101-103 6,10 7,1 1 ZD 1 RA 1 2,3 4 5 6 R1 2 3,101 4 5,7,15 101-104 6 Parts No.
CBM-710/720 Service Manual 52 P AR TS LIST CONTROL BOARD ASSY : P ARALLEL CBM-710/720 Ref. No. R 8,17 9,1 1,18 19,24-26 31 10 12 13 14 16 20,21 27,28 22,23 29,30 C 1,3,19 2 4 5 6,102 7 8,16,17 9,10 1 1,14 18 12,13 15 20,101 CP 1,5,8 10,12 OSC L 1,2 BZ Parts No.
CBM-710/720 Service Manual 53 P AR TS LIST CONTROL BOARD ASSY : P ARALLEL CBM-710/720 Ref. No. DS 1 CN 1 2 4 5 6 7 8 9 Parts No. Description Q’ty Remarks E 5103-350 E 4010-290 S 3 x 8 N 3-1-N E 4800.
CBM-710/720 Service Manual 54 with Back Up (B) without Back Up (N) Jumper 1 Open C-N Short Jumper 2 C-B Short C-N Short Jump W ire Setting : P ARALLEL P AR TS POSITION : CONTROL BOARD UNIT P ARALLEL.
CBM-710/720 Service Manual 55 P AR TS LIST 7. Control Board Assy : RS422A CBM-710/720 Ref. No. IC 1 2 3 4 5 6 7 8,13 9 10 11 12 14 15 TA 1 2 TR 1 2-5 8,9 101-103 6,10 7,1 1 ZD RA 1,5 2,3 4 R1 2 3,101 4 5,7,15 102-104 Parts No.
CBM-710/720 Service Manual 56 P AR TS LIST CONTROL BOARD ASSY : RS422A CBM-710/720 Ref. No. R 6,35 38-40 8,17 9,1 1 18,19 24-26 31 10 12 13 14 16 20,21 27,28 22,23 29,30 34,36 37 32,33 C 1,3,19 2 4 5 6,102 7 8,16 17 9,10 1 1,14 18 12,13 15 20,21 101 CP 1,5,8 1 1,13 Parts No.
CBM-710/720 Service Manual 57 P AR TS LIST Control Board Assy : RS422A CBM-710/720 Ref. No. OSC 1 L 1,2 BZ DS 1,2 CN 1 2 4 5 6 7 8 9 Parts No. Description Q’ty Remarks E 501-150 E 4009-300 E 7151-12.
CBM-710/720 Service Manual 58 with Back Up (B) without Back Up (N) Jumper 1 Open C-N Short Jumper 2 C-B Short C-N Short Jump W ire Setting : RS422A P AR TS POSITION : CONTROL BOARD UNIT RS422A.
CBM-710/720 Service Manual 59 P AR TS LIST 8. OPERA TION P ANEL UNIT/PE DETECTOR UNIT/OPERA TION P ANEL JUNCTION UNIT CBM-710/720 Ref. No. D 1,2 3 R 1,2 3 SW 1,2 CA 5 PH 1 CA 7 CN 12 CA 5 Parts No.
CBM-710/720 Service Manual 60 P AR TS POSITION : OPERA TION P ANEL UNIT LED (GREEN) LED (RED) T ACT SWITCH CORD ASSY CA 5 PC BOARD PC710-04.
CBM-710/720 Service Manual 61 P AR TS POSITION : PE DETECTOR UNIT PHO TOINTERR UPTER GR2S05 CORD ASSY CA 7 PC BOARD PC710-05.
CBM-710/720 Service Manual 62 OP Junction Block 5267-07A CORD ASSY CA 5 PC BOARD PC710-06.
CBM-710/720 Service Manual 63 P AR TS LIST 9. Auto Cutter AC-2/AC-3 Ref. No. 1 2 3 4 5 6 7 8 9 10 10-1 10-2 10-3 10-4 11 12 13 14 15 16 17 18 19 20 21 22 Parts No. Description Q’ty Remarks E 8010-010 E 8010-020 E 801 1-010 S 2.6 x 8 E 8012-010 E 8013-010 E 3 E 8014-010 E 8015-010 E 2.
CBM-710/720 Service Manual 64 AC-2 12 3 7 5 6 4 10-2 13 1 6 19 15 16 2 10 10-1 10-3 11 8 9 17 18 6 3 21, 22 14 20.
CBM-710/720 Service Manual 65 AC-3 12 3 1 10-4 15 16 10-2 13 2 10-3 10 10-1 11 8 9 17 18 14 21, 22 3 6 12.
CBM-710/720 Service Manual 66 P AR TS LIST 10. Winder A W -2 Ref. No. 1 2 2-1 -2 -3 3 6 7 8 9 10 11 12 13 14 15 16 Parts No. Description Q’ty Remarks E 8500-010 E 8510-010 E 8017-010 E 8512-010 E 85.
CBM-710/720 Service Manual 67 A W -2 10 14 12 13 15 9 1 15 3 6 8 2 2-3 2-1 2-2 7 15 16 11.
An important point after buying a device Citizen Systems CBM-710/720 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Citizen Systems CBM-710/720 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Citizen Systems CBM-710/720 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Citizen Systems CBM-710/720 you will learn all the available features of the product, as well as information on its operation. The information that you get Citizen Systems CBM-710/720 will certainly help you make a decision on the purchase.
If you already are a holder of Citizen Systems CBM-710/720, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Citizen Systems CBM-710/720.
However, one of the most important roles played by the user manual is to help in solving problems with Citizen Systems CBM-710/720. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Citizen Systems CBM-710/720 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
