Citizen CL-S6621 User Manual

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Technical Manual

CL-S6621

Thermal Transfer Barcode & Label Printer

PZY90003-00

1.00E-1304

CL-S6621 ii

CHAPTER 1 SPECIFICATIONS

CHAPTER 2 OPERATING PRINCIPLE

CHAPTER 3 DISASSEMBLY AND MAINTENANCE

CHAPTER 4 TROUBLESHOOTING

CHAPTER 5 PARTS LISTS

CHAPTER 6 CIRCUIT DIAGRAMS

APPENDICES

iii

CL-S6621

Safety Precautions

To prevent personal injury or property damage, the following shall be strictly observed. The degree of possible injury and damage due to incorrect use/maintenance or improperly following instructions is described below.

Indicates a situation which, if not observed and handled properly, could

Warning

Caution

: This is a mark to call attention to the reader.

• Before starting disassembly/reassembly or mechanical adjustment, be sure to disconnect the power cord from the power source.

• Do not disassemble/reassemble or adjust the machine, if it functions properly.

Particularly, do not loosen screws on any component, unless necessary.

• After completing an inspection and before turning on the power, be sure to check that there is no abnormality.

• Never try to print without media.

• Check that the media is properly set.

• Do not lay anything on the cover or lean against it during maintenance or while the

printer is in operation.

• During maintenance, be careful not to leave parts or screws unattached or loose inside the printer.

• When handling a printed circuit board, do not use gloves, etc., which can easily cause static electricity. Since ICs, such as CPU, RAM and ROM, might be destroyed by static electricity, do not touch lead wires or windows unnecessarily.

• Do not put the printed circuit boards directly on the printer or on the floor.

• When disassembling or reassembling, check wires for any damage and do not pinch

or damage them. Also, run wires as they were.

Indicates a situation which, if not observed and handled properly, could result in death or serious injury.

result in injury or property damage.

Warning

Caution

CL-S6621 iv

CHAPTER 1

SPECIFICATIONS

1-1

CL-S6621

CHAPTER 1 SPECIFICATIONS

1-1. General Specifications.................................................................................................... 1-3

1-2. Printable Area .................................................................................................................1-8

1-3. Printing Position Accuracy.............................................................................................. 1-9

1-4. Adjustable Sensors......................................................................................................... 1-10

CL-S6621 1-2

General Specifications

1-1. General Specifications

Printing

Printing method Thermal transfer/Direct thermal Resolution

Max. print width 168 mm 6.6inch

Max. print length 2539.7 mm 99.99 inch

Print density Print density is adjustable with software Printing speed setting 6, 5, 4, 3 or 2 inches per second

Print mode

Batch mode Normal printing (single or multiple sheets) Tear off mode Feeds back media to the tear-off position after printing is completed.

Cut mode *1 Prints while cutting at designated sheet units.

Peel mode*1 Peels labels from the liners after printing them. Media

Types of media Roll, fanfold

Recommended media Thermal transfer: label media (LR1111 Lintec)

Max. media width 178.0 mm 7.01" Min. media width 50.0 mm 1.97" Min. label width 50.0 mm 1.97" Min. label pitch*2 19.0 mm 0.748" Max. media thickness 0.254 mm 0.01" Max. media length 2539.7 mm 99.99" Min. media length 16.0 mm 0.63" Min. media thickness 0.0635 mm 0.0025"

diameter

*1: Options can be separately purchased. *2: When a media pitch of less than 1" is used, set the "Small Media Adjustment" setting in the

"Page Setup" menu to "On".

Main scanning line density: 203 dots/inch (8 dots/mm)

Sub-scanning line density: 203 dots/inch (8 dots/mm)

Head 1344 dots (effective dots: 1344 dots)

The following two kinds of cut mode operations are available.

• Back feed

• Cut through (Cut through refers to stopping present printing to cut the previous label when it reaches the cut position. After cutting, printing restarts but a gap may be created at the seam of the printing at this time.)

(continuous media, die-cuts, continuous tags, paper or tickets)

Direct thermal media: label media (150LA-1 Ricoh), tag media (130LHB Ricoh)

Max. external diameter: 127mm 5" On-board roll media Media core: 25.4 to 76mm Min. media core external diameter (when using label media): 50.8 mm

1 to 3"

1-3 CL-S6621

General Specifications

Ribbon

Recommended ribbon B110A Ricoh

Max. ribbon width 174.0 mm 6.85"

Min. ribbon width 50.0 mm 1.97" Max. ribbon length 360.0 m 1181 ft

Max. roll diameter 74.0 mm 2.90" Outer diameter of the

33.4±0.50mm 1.31 ± 0.02" paper core Inner diameter of the

25.4 ± 0.25 mm 1.00 ± 0.01" paper core

Ribbon end tape

Max. 80.0 mm 3.15” length

Ribbon end detection Ribbon out detection by a ribbon sensor

Bar code

For Datamax® emulation*3

One-dimension • Code 3 of 9 • UPC-A • UPC-E • EAN-13 (JAN-13)

• EAN-8 (JAN-8) • Interleaved 2 of 5 • Code 128

• HIBC (Modulus 43-used code 3 of 9) • Codabar (NW-7)

• Int 2 of 5 (Modulus 10-used Interleaved 2 of 5) • Plessey

• Case Code • UPC 2DIG ADD • UPC 5DIG ADD • Code 93

• Telepen • ZIP • UCC/EAN 128 • UCC/EAN128 (for K-MART)

• UCC/EAN128 Random Weight • FIM

Two-dimension • UPS Maxi Code • PDF-417 • Data Matrix • QR Code • Aztec

• GS1 DataBar

For Zebra® emulation*4

One-dimension • Code 11 • Interleaved 2 of 5 • Code 39 • EAN-8 • UPC-E

• Code 93 • Code 128 • EAN-13 • Industrial 2 of 5

• Standard 2 of 5 • ANSI CODABAR • LOGMARS • MSI • Plessey

• UPC/EAN Extensions • UPC-A • POSTNET • Planet

Two-dimension • Code 49 • PDF-417 • CODA BLOCK • UPS Maxi Code

• Micro PDF-417 • Data Matrix • QR Code • GS1 DataBar

• TLC39 • Aztec

*3: Datamax® is a registered trademark of Datamax Bar Code Products Corporation.

*4: Zebra

is a registered trade mark of ZIH Corp.

CL-S6621 1-4

General Specifications

Font

For Datamax® emulation*3

1. Seven kinds of fixed pitch font Overseas, English fonts and European fonts

2. OCR fonts

OCR-A*

, OCR-B*5

3. Proportional fonts CG Triumvirate smooth font CG Triumvirate Bold smooth font (6, 8, 10, 12, 14, 18, 24, 30, 36, 48 points)

• Character set: Conforms with code page 850 standards

4. TrueType

rasterizer *

For Zebra® emulation*4

1. Five kinds of fixed pitch font Overseas, English fonts and European fonts

2. OCR fonts OCR-A*

, OCR-B*5

3. Proportional font CG Triumvirate Condensed Bold

4. True type™ rasterizer*

Symbol set

PC866U Ukraina*7, PC Cyrillic, ISO 60 Danish/Norwegian, DeskTop,

ISO 8859/1 Latin 1, ISO 8859/2 Latin 2, ISO 8859/9 Latin 5, ISO 8859/10 Latin 6, ISO 8859/7 Latin/Greek, ISO 8859/15 Latin 9, ISO 8859/5 Latin/Cyrillic, ISO 69: French, ISO 21: German, ISO 15: Italian, Legal, Math-8, Macintosh, Math, PC-858 Multilingual, Microsoft Publishing, PC-8, Code Page 437, PC-8 D/N, Code Page 437N, PC-852 Latin 2, PC-851 Latin/Greek, PC-862 Latin/Hebrew, Pi Font, PC-850 Multilingual, PC-864 Latin/Arabic, PC-8 TK, Code Page 437T, PC-1004, PC-775 Baltic, Non-UGL, Generic Pi Font, Roman-8, Roman-9, ISO 17: Spanish, ISO 11: Swedish, Symbol, PS Text, ISO 4: United Kingdom, ISO 6: ASCII, Ventura International, Ventura Math, Ventura US, Windows 3.1 Latin 1, Wingdings, Windows 3.1 Latin 2, Windows 3.1 Baltic (Latv, Lith), Windows 3.0 Latin 1, Windows Latin/Cyrillic, Windows 3.1 Latin 5

Control language

Conforms to Datamax® programming language*3 and Zebra®

programming language*

*5: The OCR font may have a low recognition rate according to the reader. *6: It is equipped with UFST

and TrueTypeTM rasterizer that are licensed from Monotype Imaging,

Inc.

TrueType UFST

is a trademark of Apple Inc.

is a trademark of Monotype Imaging, Inc.

*7: "PC866U Ukraina" is available for Datamax® emulation only.

1-5 CL-S6621

General Specifications

Outline of electronic devices

CPU 32-bit RISC CPU ROM Standard equipment: FLASH ROM 16MByte (User area: 4MByte)

RAM Standard equipment: SDRAM 32MByte (User area: 4MByte)

Media detection sensors

Transparent sensor Detects media gap between labels, notches on tags, and media out

Reflective sensor Detects reflective mark on back of media and media out

PNE (Paper Near End) sensor

Detects the near end state of roll paper (By default, issuing a paper near end alarm is disabled by the menu settings.)

Label peeling sensor *1Detects labels that are peeled off.

Communication interfaces

Serial 2400, 4800, 9600, 19200, 38400, 57600, or 115200 bps

USB High-speed USB2.0 (480Mbps)

Communication interface (Options)

Parallel*8 IEEE1284 (Compatible, Nibble, ECP mode)

Network

Wired LAN: Ethernet interface (10-Base-T/100-Base-TX)

Wireless LAN: IEEE802.11n/IEEE802.11g/IEEE802.11b

Indications and switches

LED POWER, PRINT, CONDITION, ERROR Buzzer Alarms, errors, etc.

Operating panel keys PAUSE, FEED, STOP, MODE/REPEAT

Head-up detection

Detects head open.

switch

Power switch Turns power on and off.

Power supply

120V (-10%+6%), 2.5A, 60Hz (U.S.A., Canada) 120V version

UL60950-1st/2nd Edition, CSA No. 950, FCC Part 15 Subpart B (Class A)

220V-240V (-10%+6%), 1.5A, 50/60Hz (Europe) 220V version

EN60950-1, EN55022 (Class A), EN55024, EN61000-3-2, EN61000-3-3, CCC GB4943-2001/GB9254-1998/GB17625.1-2003

Power consumption (max. value)

120V version 105W (operation at 6 IPS at 12.5% printing duty)

4.4W (printer standby in Normal mode)

2.3W (printer standby in Standby mode*

)

220V version 105W (operating at 6 IPS at 12.5% printing duty)

5.0W (printer standby in Normal mode)

2.8W (printer standby in Standby mode*

)

*8: This interface is Non-L. P. S. (Limited Power Source). *9: Standby mode is default OFF.

CL-S6621 1-6

General Specifications

Others

Environment Operating temperature conditions:

Operating temp. 0 to 40

°C, humidity 30 to 80%, condensation free

(Conditions: ventilation, and natural convection)

Storage temperature conditions

Temp. -20 to 60

°C, humidity 5 to 85%

(Store the printer with the Head Unit up, without paper installed and without condensation.) (Conditions: ventilation, and natural convection)

Humidity %

[Operating and printing assurance condition] [Storage assurance condition]

Temperature °C Operating assurance temperature Printing assurance temperature

Humidity %

-20 Temperature °C

Storage assurance temperature

External dimensions Approx. 303 (W) X 290.1 (D) X 273.2 (H) mm

11.9 (W) X 11.4 (D) X 10.76 (H)"

Weight Approx. 7.9 kg (17.4 lb.)

Accessories Test label media, Test ribbon, CD-ROM (User's Manual), Quick start

guide, Head cleaner, Power cord, Media holder bar and Media holder guide, Ribbon holder, Paper core

Option Auto-cutter unit, Peeler unit, IEEE1284 Parallel I/F board, Ethernet I/F

board, Wireless LAN I/F board

1-7 CL-S6621

Printable Area

1-2. Printable Area

The printable area of the printer is as follows: When media is set to the printer, it must be aligned with the media guide at the left of the printing mechanism. Though the available maximum media width is 178 mm (7.01"), there are unprintable areas on both sides: 2.5 mm (0.10") width is on the left side and 7.5 mm (0.30") width on the right side as shown below. The left side unprintable area applies for media of any size.

Media guide

2.5 mm (0.10")

Reference end

Maximum media width: 178 mm (7.01")

Unprintable area

Printable area

168 mm (6.61”)

7.5 mm (0.30")

Direction of media feed

CL-S6621 1-8

Printing Position Accuracy

1-3. Printing Position Accuracy

By default, the printing start position is 2.5 mm (0.10") from the left end of the media and 1 mm (0.04") backward the leading edge of the label, U-shaped notch, or black mark.

2.5 mm (0.10") is the necessary value to avoid printing in the unprintable area as mentioned in

Printable Area".

“

The printing start position can deviate from the ideal position as follows:

Unprintable area

2.5 ± 1 mm*3

(0.10 ± 0.04")

Actual printing start position*

BCDEFG

1 mm (0.04")

2.5 mm (0.10")

Ideal printing start position

Reference edge

(Paper guide)

*1: Actual printing start position. May deviates from the ideal one in the indicated range. *2: Deviation of vertical positioning when printing position is set to 0. *3: Deviation of horizontal positioning when printing position is set to 0. *4: Deviation of vertical printing position when 100 mm is specified from the printing start

position.

Maximum media width: 178 mm (7.01")

Printable area

100 ± 2 mm*4 (39.4 ± 0.08")

1 ± 2 mm*

(0.04 ± 0.08")

Direction of media feed

Unprintable area

1-9 CL-S6621

Adjustable Sensors

1-4. Adjustable Sensors

There are two media sensors; the upper sensor (transparent sensor) and the bottom sensor (reflective sensor). The upper sensor is used to detect the labels on the liner or the U-shaped notches of tag. The bottom sensor is used to detect the black marks on tag. Also, both sensors are used to detect media end. The mechanical adjustable range of both sensors is equal and they are adjusted at the same time by turning the blue knob (“Gear Bevel Lead Screw U”). For details about the media sensors, refer to “2-1-3 Label/Tag Detection Mechanism".

2.5 mm

Media guide

(0.10")

4.8 to 88.9 mm (0.19 to 3.5")

(Moveable range of the

transparent sensor)

2.7 to 86.8 mm (0.11 to 3.42")

(Moveable range of the

reflective sensor)

Unprintable area

Maximum media width: 178 mm (7.01")

Center

Printable area

168 mm (6.61”)

Direction of media feed

Media

Unprintable area

7.5 mm (0.30")

CL-S6621 1-10

CHAPTER 2

OPERATING PRINCIPLES

2-1 CL-S6621

CHAPTER 2 OPERATING PRINCIPLES

2-1. Operation of Each Mechanism .......................................................................................2-4

2-1-1. Locations and Functions of Motors, Sensors and Thermal Head ......................2-4

(1) “Unit, Ribbon” section................................................................................ 2-4

(2) Printing section.......................................................................................... 2-5

2-1-2. Media Feed Mechanism ..................................................................................... 2-6

2-1-3. Label/Tag Detection Mechanism ........................................................................ 2-7

2-1-4. Printing and Ribbon Feed Mechanism ............................................................... 2-10

2-1-5. Print Head Up/Down Detection Mechanism .......................................................2-13

2-1-6. Paper Near End Detection Mechanism ..............................................................2-14

2-1-7. Head Balance Adjustment Mechanism ..............................................................2-15

2-1-8. Media Offset Adjustment Mechanism................................................................. 2-16

2-1-9. Transparent/Reflective Sensor Travelling Mechanism ....................................... 2-17

2-2. Operation of Control Parts .............................................................................................. 2-18

2-2-1. Configuration of Printer ......................................................................................2-18

(1) AC power supply .......................................................................................2-19

(2) SA, Main PCB............................................................................................ 2-19

(3) Operation panel (SA, Opepane PCB)........................................................ 2-20

(4) Thermal print head (SA, Head).................................................................. 2-20

(5) Sensors ..................................................................................................... 2-20

(6) Motors........................................................................................................ 2-20

(7) SA, Ribbon PCB........................................................................................ 2-20

(8) SA, Relay PCB ..........................................................................................2-21

(9) Optional I/F................................................................................................ 2-21

2-2-2. Memory map ......................................................................................................2-22

2-2-3. Sensors ..............................................................................................................2-23

(1) Head up switch.......................................................................................... 2-23

(2) Transparent sensor and reflective sensor ................................................. 2-24

(3) Ribbon Sensor F/R.................................................................................... 2-26

(4) Head temperature sensor.......................................................................... 2-27

(5) PF motor temperature sensor.................................................................... 2-28

(6) Ribbon motor temperature sensor............................................................. 2-29

(7) Paper Near End sensor............................................................................. 2-30

2-2-4. Drivers ................................................................................................................ 2-31

(1) PF motor driver.......................................................................................... 2-31

(2) Ribbon motor driver................................................................................... 2-32

(3) Head driver................................................................................................ 2-33

(4) Buzzer driver ............................................................................................. 2-35

(5) Fan driver .................................................................................................. 2-35

2-2-5. Other circuits ...................................................................................................... 2-36

(1) Power supply circuit................................................................................... 2-36

(2) Reset circuit............................................................................................... 2-37

(3) Clock circuit ...............................................................................................2-37

CL-S6621 2-2

(4) Ope-pane circuit ........................................................................................2-38

(5) USB I/F control circuit................................................................................ 2-38

(6) RS232C I/F circuit ..................................................................................... 2-39

(7) Option I/F circuit ........................................................................................2-39

(8) Peeler circuit (for optional peeler).............................................................. 2-40

(9) Cutter control circuit (for optional cutter) ................................................... 2-41

2-3. Operation Panel.............................................................................................................. 2-43

2-3-1. External view ...................................................................................................... 2-43

(1) Keys........................................................................................................... 2-43

(2) LEDs.......................................................................................................... 2-43

2-3-2. Operation using the keys ................................................................................... 2-44

(1) Normal operation....................................................................................... 2-44

(1-1) Sensor adjustment mode ..................................................................2-44

(1-2) Menu setting mode ...........................................................................2-45

(2) Test mode.................................................................................................. 2-46

(2-1) Self print mode.................................................................................. 2-46

(2-2) Hex dump mode................................................................................ 2-47

(3) Factory/Service mode................................................................................ 2-47

(3-1) General ............................................................................................. 2-47

(3-2) How to enter the Factory/Service Mode............................................ 2-48

(3-3) Factory/Service Mode menu table .................................................... 2-54

2-4. Interface.......................................................................................................................... 2-59

2-4-1. Serial Interface ...................................................................................................2-59

(1) Specifications............................................................................................. 2-59

(2) Signal line and pin assignment.................................................................. 2-59

(3) Protocol ..................................................................................................... 2-60

2-4-2. USB Interface ..................................................................................................... 2-61

(1) Specifications............................................................................................. 2-61

(2) Signal line and pin arrangement................................................................ 2-61

2-4-3. Parallel Interface (Option) ..................................................................................2-61

(1) Specifications............................................................................................. 2-61

(2) Signal line and pin assignment.................................................................. 2-62

(3) Parallel port status signals when an error occurs ......................................2-62

(4) Compatible timing specification................................................................. 2-63

2-3

CL-S6621

Operation of Each Mechanism

2-1. Operation of Each Mechanism

This printer is a thermal transfer barcode & label printer comprised of the following mechanisms: media feed, ribbon feed, label/tag detection, print head up/down detection, paper near end detection, head balance adjustment, media thickness adjustment and transparent/reflective sensor travel. This section describes the operation of each of these mechanisms.

2-1-1. Locations and Functions of Motors, Sensors and Thermal Head

This printer has the following motors, sensors and thermal head.

(1) “Unit, Ribbon” section

Part name Description SA Ribbon Motor F (Front side) SA Ribbon Motor R (Rear side) Ribbon Sensor F (“SA, Ribbon Sensor” on the front side)

Ribbon Sensor R (“SA, Ribbon Sensor” on the rear side)

SA Ribbon Motor F

SA Ribbon Motor R

This motor takes up ribbon. A thermistor is attached to the side of this motor to detect the motor temperature. This motor gives back tension to ribbon.

This sensor consists of two photointerrupters to detect if appropriate tension is given to the front side ribbon. It also detects a ribbon-running error.

This sensor consists of two photointerrupters to detect if appropriate tension is given to the rear side ribbon. It also detects the ribbon end status.

Ribbon Sensor R ("SA, Ribbon Sensor" on the rear side)

Ribbon Sensor F ("SA, Ribbon Sensor" on the front side)

CL-S6621 2-4

Operation of Each Mechanism

(2) Printing section

Part name Description

SA PF Motor This motor feeds media. A thermistor is attached to the side surface of this

motor to detect the motor temperature.

SA, Head Up Switch This switch is a mechanical lever switch to detect the print head position;

up or down. Transparent Sensor (Upper sensor)

This sensor is a photo sensor to detect the labels stuck on liner or

U-shaped notches on tag. It also detects the media end. (SA TRA Sen PCB)

Reflective Sensor (Bottom sensor)

This sensor is a photo sensor to detect the black marks on tag. It also

detects the media end. (SA Ref Sen PCB)

SA, Head It consists of a head driver and thermal elements. Thermal elements are

heated to make printing on media. The thermal head incorporates a

thermistor to detect the thermal head temperature. SA PNE Sensor (Paper near end

This sensor is a photo sensor to detect a near end status of roll paper

installed. sensor)

SA, Head

SA PNE Sensor

Transparent sensor (SA TRA Sen PCB)

Reflective Sensor (SA Ref Sen PCB)

SA PF Motor

SA, Head Up Switch

2-5 CL-S6621

Operation of Each Mechanism

2-1-2. Media Feed Mechanism

The major components of the media feed mechanism are: (a) SA PF Motor (b) SA2_Platen (c) Gear train

By setting the head block to the down position, media is pushed against the “SA2_Platen” by the “SA, Head”. As the “SA PF Motor” (stepping motor) turns counterclockwise viewing from the right side of the printer, the “SA2_Platen” turns counterclockwise via the gear train (“Gear Reduction PF 1”, “Gear Reduction PF 2” and “Gear Idle PF”) and media is fed forward by the friction force produced between the “SA2_Platen” and the “SA, Head”.

When the “SA PF Motor” turns clockwise, media is fed backwards. One step of the “SA PF Motor” feeds media by 1/16 mm (0.0025").

Gear Reduction PF 2

Gear Reduction PF 1

Thermal Elements

SA2_Platen

Gear Idle PF

Motor Gear

SA, Head

Ribbon

[Right side view]

Media

SA PF Motor

CL-S6621 2-6

Operation of Each Mechanism

2-1-3. Label/Tag Detection Mechanism

The major components of the label/tag detection mechanism are: (a) Reflective sensor (Bottom sensor) (SA Ref Sen PCB) (b) Transparent sensor (Upper sensor) (SA TRA Sen PCB)

There are two movable sensors, the reflective sensor (bottom sensor) and the transparent sensor (upper sensor). As you adjust the sensor position with the blue knob (“Gear Bevel Lead Screw U”), both sensors move at the same time. As shown in the figure below, the reflective sensor has two LEDs and one phototransistor. The reflective sensor is used to detect black marks at the back of tag. On the other hand, the transparent sensor is a phototransistor that will receive the transparent light from the LEDs through the media. The transparent sensor is used to detect labels on liner or U-shaped notches of tag. Both reflective and transparent sensors are used to detect the media end.

Aligning the sensors for label paper or tag with U-shaped notches:

For label paper, turn the blue knob (“Gear Bevel Lead Screw U”) to align the mark of the transparent sensor at the center of label. (The transparent sensor and the reflective sensor move at the same time.) For tags with U-shaped notches, turn it to align the mark with the U-shaped notch.

Aligning the reflective sensor for tag with black marks:

For tag with black marks, turn the blue knob (“Gear Bevel Lead Screw U”) to align the left side mark of the reflective sensor with the black mark of tag.

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2-7 CL-S6621

Operation of Each Mechanism

Detecting labels: (Media Sensor menu: “See Through”)

For detecting label, both reflective sensor and transparent sensor are used. Label paper passes between both sensors. The light emitted from the LEDs of the reflective sensor passes through the liner (base part of label paper) where no label is stuck on it, and the light reaches the transparent sensor. Accordingly, the phototransistor of the transparent sensor turns ON. Meanwhile, in the label part, the light is blocked by label and does not reach the phototransistor. So, the phototransistor turns OFF. By sensing the output of the transparent sensor, the CPU on the Main PCB can detect the label leading edge for printing.

Detecting U-shaped notches of tag: (Media Sensor menu: “See Through”)

For detecting U-shaped notches of tag, both reflective sensor and transparent sensor are used. The U-shaped notches are detected in the same way as the label mentioned above, except that the light is directly falls on the transparent sensor through the notch.

Detecting black marks on tag: (Media Sensor menu: “Reflect”)

For detecting black marks on tag, only the reflective sensor is used. Light emitted from the LEDs is reflected by the tag (at other than the black mark) and reaches the phototransistor of the reflective sensor. At the black mark, the light is not reflected. The CPU on the Main PCB detects the black mark by sensing the output of the reflective sensor.

Label

U-shaped notch

Ta g

Black mark

Media

Sensor to be used

Media Sensor menu

Label gap

Liner

Transparent and Reflective sensors

Transparent sensor

Media

LEDs

Reflective sensor

See Trough

Reflective sensor

Media

LEDs

Reflective sensor

Reflect

CL-S6621 2-8

Operation of Each Mechanism

Detecting continuous media: (Media Sensor menu: “None”)

For detecting continuous media, only the reflective sensor is used. In this case, only media end is detected by the reflective sensor.

LED light amount control:

According to the media selected by the Media Sensor menu (“See Through”, “Reflect”, or “None”), the amount of light is well controlled to detect the label/U-shaped notch, black mark, or continuous media. The amount of light is as follows (the largest amount is for “See Through):

• Continuous media (None) < Black mark (Reflect) < Label/U-shaped notch (See Through)

2-9 CL-S6621

Operation of Each Mechanism

2-1-4. Printing and Ribbon Feed Mechanism

The major components of the printing and ribbon feed mechanism are: (a) SA, Head (d) SA, Ribbon Tension Shaft F/R (b) SA Ribbon Motor F/R (e) SA, Ribbon Sensor (Front/Rear) (c) Ribbon gear train

Ink ribbon is set to the printer using the ribbon holders. Ribbon is supplied from the supply reel and is taken up by the take-up reel with adequate ribbon tension, via the “SA, Ribbon Tension Shaft R” and “SA, Ribbon Tension Shaft F”. The “SA, Ribbon Tension Shaft F/R” is always pushed outward by the internal springs, and, when ribbon slacks, it moves outward. When ribbon tightens, it moves inward. (Refer to the figures on the later pages.) The same ribbon sensor is installed on the front and rear sides. The ribbon sensor on the front side is used to detect the position of the “SA, Ribbon Tension Shaft F” (i.e., the ribbon tension on the front side). While, the ribbon sensor on the rear side is used to detect the position of the “SA, Ribbon Tension Shaft R” (i.e., the ribbon tension on the rear side). The ribbon sensor on the front side is also used to detect a ribbon running condition, and that on the rear side is used to detect the ribbon end. On the front side, the “SA Ribbon Motor F” turns to take up ribbon. On the rear side, the “SA Ribbon Motor R” turns to supply ribbon, while applying adequate back tension to ribbon to eliminate ribbon slack.

Gear Ribbon Shaft F

Take-up Side

SA Ribbon Motor R

SA Ribbon Motor F

Gear Reduction Ribbon 1

Gear Reduction Ribbon 2

Gear Reduction Ribbon 3

SA, Ribbon Tension Shaft F

Gear Idle Ribbon

Ribbon

Thermal Head

SA2_Platen

[Front]

Printing:

When printing with ink ribbon, ink on the ribbon is melted by the heated thermal element of the “SA, Head” and is transferred on the media surface.

Supply Side

Gear Reduction Ribbon 1

Gear Ribbon Shaft R

Gear Idle Ribbon

Gear Reduction Ribbon 3

Gear Reduction Ribbon 2

SA, Ribbon Tension Shaft R

Media

CL-S6621 2-10

Operation of Each Mechanism

Taking up Ribbon: Ribbon will be taken up on the front side as follows: (1) As media is fed, ribbon is also fed by the friction force produced between media and the “SA,

Head”.

(2) Ribbon slacks and the ribbon sensor on the front side turns OFF as the “SA, Ribbon Tension

Shaft F” is pushed outward. (3) The “SA Ribbon Motor F” starts to turn and ribbon is taken up. (4) Ribbon tightens and the ribbon sensor on the front side turns ON. Then, the “SA Ribbon Motor

F” stops.

Supplying Ribbon:

On the rear side, the “SA Ribbon Motor R” turns to supply ribbon, while applying adequate back tension. In the same way as on the front side, the ribbon sensor on the rear side detects the ribbon tension to keep the ribbon tension constant. However, when printing is made and ribbon is fed, the ribbon sensor on the rear side turns ON since ribbon is tightened at this time.

Reel Drive Mechanism:

Though the ribbon holders are directly installed in the reels, ribbon is connected to the reels via the spring mechanism of the ribbon holders. This means that ribbon is taken up via the spring mechanism when the “SA Ribbon Motor F”/”SA Ribbon Motor R” turns. On the front side, the “SA Ribbon Motor F” turns in the clockwise direction viewing from the right side of the printer, and the “Gear Ribbon Shaft F” (take-up reel) turns in the counterclockwise direction via the “Gear Reduction Ribbon 1”, “Gear Reduction Ribbon 2”, “Gear Reduction Ribbon 3” and “Gear Idle Ribbon”. Thus, ribbon is taken up. On the rear side, the “SA Ribbon Motor R” turns in the counterclockwise direction, and the “Gear Ribbon Shaft R” (supply reel) turns in the clockwise direction via the “Gear Reduction Ribbon 1”, “Gear Reduction Ribbon 2”, “Gear Reduction Ribbon 3” and “Gear Idle Ribbon”, Ribbon”. Thus, ribbon is supplied.

2-11 CL-S6621

Operation of Each Mechanism

Detecting Ribbon Tension (Ribbon Sensors):

The same ribbon sensor is installed on the front and rear sides. Since the operation is the same on both sides, the front side operation is explained here: When ribbon is taken up, the ribbon tightens and the “SA, Ribbon Tension Shaft F” is pushed inward (in the direction of “a”) by the ribbon. At this time, the claws “A” attached to the “SA, Ribbon Tension Shaft F” are inserted into the photointerrupters of the “SA, Ribbon Sensor”, and the photointerrupters turn OFF. During printing, the ribbon is fed forward together with media and the ribbon will slack. This, the “SA, Ribbon Tension Shaft F” is moved outward (in the direction of “b”) by the spring (“B”) force, and the claws “A” come off the photointerrupters. So, the photointerrupters turn ON and the “SA Ribbon Motor F” turns faster to take up the ribbon quickly. Then, the claws “A” are inserted into the photointerrupters again, and the “SA Ribbon Motor F” resumes normal speed. This cycle is repeated and constant tension is applied to the ribbon. (The two claws “A” are arranged so that they are inserted into or released from the photointerrupters with a slightly different timing. This function enables to finely control the ribbon tension.) On the rear side, during printing, ribbon will be tightened. If it is tightened, the ribbon sensor turns ON and the “SA Ribbon Motor R” turns faster than normal speed to quickly supply ribbon.

Ribbon Sensor

SA, Ribbon Sensor

Supporting Point

Tension Adjustment Knob (Front)

[Right side view]

Ribbon

Tension Adjustment Knob (Rear)

Ribbon

SA, Ribbon Tension Shaft F

Spring Ribbon Tension (2 pcs.)

Tension Adjustment Mechanism:

To apply adequate ribbon tension, you can change the spring “B” force as follows: The spring force is adjustable in 3 steps with the “Tension Adjustment Knob (Front/Rear)”. As you move the knob toward the

T mark, the spring force becomes stronger since the spring “B” is

moved to the left in the above figure.

CL-S6621 2-12

Operation of Each Mechanism

2-1-5. Print Head Up/Down Detection Mechanism

The component of the print head up/down detection mechanism is as follows: (a) SA, Head Up Switch (b) Pop Up Cover Frame (c) Spring Pop Up (d) Support Pop Up

The print head up/down detection mechanism detects the up (open)/down (close) status of the “Unit, Head”. When the “Unit, Head” is in the down position, the “Support Pop Up” (a part of the “Unit, Head”) pushes down the top of the “Pop Up Cover Frame”, and the lever of the “SA, Head Up Switch” is pushed. In this state, the “SA, Head Up Switch” turns ON and the signal line is in “Low” level. While, the “Unit, Head” is in the up position, since the “Pop Up Cover Frame” is released from the “Support Pop Up”, it pops up by the force of “Spring Pop Up” and the switch lever is set free. In this state, the “SA, Head Up Switch” turns OFF and the signal line is in “High” level. The CPU on the Main PCB detects up or down position of the “Unit, Head” by sensing the output of the “SA, Head Up Switch.

Unit, Head

["Unit, Head" Down Position]

SA, Head Up Switch

Support Pop Up

Pop Up Cover Frame

Spring Pop Up

SA, Head Up Switch

["Unit, Head" Up Position]

OFF

Support Pop Up

Pop Up Cover Frame

Spring Pop Up

2-13 CL-S6621

Operation of Each Mechanism

2-1-6. Paper Near End Detection Mechanism

The component of the Paper near end detection mechanism is as follows: (a) SA PNE Sensor (A part of the main body) (b) Lever PNE (A part of the “Roll Paper Holder”) (c) Slider PNE (A part of the “Roll Paper Holder”) (d) Spring PNE (A part of the “Roll Paper Holder”)

The paper near end sensor is used to detect a paper near end status of roll paper installed in the printer. The knob of the “Lever PNE” is pushed by the side of roll paper and the “Slider PNE” engages with the “SA PNE Sensor” (fixed part on the main body). In this state, the “SA PNE Sensor” (photointerrupter) turns OFF. When printing proceeds and the diameter of roll paper is reduced to the preset paper near end point, the knob of the “Lever PNE” that was pushed by the roll paper pops up, and the “Slider PNE” comes off the “SA PNE Sensor”. In this state, the “SA PNE Sensor” (photointerrupter) turns ON. The CPU on the Main PCB detects the ON/OFF status of the “SA PNE Sensor” (photointerrupter) and judges if the roll paper reaches the near end status.

The paper near end position can be changed mechanically by sliding the knob of the “Lever PNE” up or down.

Spring PNE

SA PNE Sensor

[Normal Status]

Roll Paper Holder

Lever PNE

Roll Paper

[PNE (Paper Near End) Status]

Spring PNE

SA PNE Sensor

Lever PNE

Roll Paper

Slider PNE

CL-S6621 2-14

Slider PNE

Operation of Each Mechanism

2-1-7. Head Balance Adjustment Mechanism

The major components of the head balance adjustment mechanism are: (a) Cam Head Balance (c) Spring Head L/R (b) Plate Head Balance

The head balance adjustment mechanism is used to eliminate uneven printing density on media. The head balance adjustment is accomplished by changing the right side head pressure according to media width to be used. To adjust, the blue Media width adjustment dial (“Cam Head Balance”) is used. When narrow width media is used, the dial should be set toward “0” to give weaker pressure. While, wide width media is used, it should be set toward “9” to give stronger pressure.

When narrow width media is used (need to give weak pressure):

The “Spring Head L” and “Spring Head R” (2 pcs.) act to press the “SA, Head” against the “SA2_Platen”. For narrow width media, if the same pressure is given on both sides, since no media exists on the right side of the “SA, Head”, the “SA, Head” will slant to the right, resulting in uneven printing density. The part “A” of the “Plate Head Balance” is pushed against the cam part of the “Cam Head Balance” by the force of “Spring Head R” and it moves up step by step () as the Media width adjustment dial is turned toward “0” (). As it moves up, the “Spring Head R” is pressed with weaker force by the “Plate Head Balance” (), and the right side pressure against the “SA, Head” decreases, resulting in even printing density. You need to align the dial number according to the media width to be used. (Smaller number for narrower media)

When wide width media is used (need to give strong pressure):

The same principle applies to wide media. However, in this case, the Media width adjustment dial should be turned toward “9”. Then the part “A” of the “Plate Head Balance” moves down to apply stronger pressure to the “SA, Head”. (Larger number for wider media)

For narrow media

Spring Head L (Fixed)

Supporting point

Spring Head R (Movable)

Weak

Toward "0"

Plate Head Balance

SA, Head

Ribbon

For wide media

SA, Head

Ribbon

Media (Narrow width)

Media (Wide width)

SA2_Platen

Strong

T0ward "9"

Cam Head Balance (Media Width Adjustment

Dial)

2-15 CL-S6621

Operation of Each Mechanism

2-1-8. Media Offset Adjustment Mechanism

The major components of the media thickness adjustment mechanism are: (a) Cam Head Adjust (c) Spring Head Holder (b) SA Head Adjust Lever (d) Plate Holder Head

According to the softness of media, the thermal element position is displaced from the optimum position. The head offset adjustment mechanism is used to correct this by moving the “SA Head” back and forth a little. By performing the head adjustment properly, optimum printing quality is obtained. (When shipping, the Media thickness adjustment dial is set to “1” for soft media.)

When soft media is used (thin thermal paper, label paper, etc.):

When soft media is used, the optimum position of the thermal elements will be nearly right above the center of the “SA2_ Platen”. (In dial No. “1”, they are aligned with the platen center.)

When hard media is used (tag paper):

When hard media is used, the optimum position of the thermal elements will shift toward the front a little from the center of the “SA2_Platen”, i.e. toward the left viewing from the right side of the “SA2_ Platen” as shown below. As the optimum position varies according to the hardness of media, it is necessary to adjust the Media thickness adjustment dial from “1” to up to “9” for optimum printing. As the dial is turned (), the “SA Head Adjust Lever” swings up and down () as its projection “A” moves along the groove of the dial. The “Plate Holder Head” end is pinched by the “Spring Head Holder” at end “B” of the “SA, Head Adjust Lever”. (Namely, both parts are connected via the “Spring Head Holder”.) Therefore, as the “SA, Head Adjust Lever” swings up and down (), the “Plate Holder Head” swings up and down accordingly (). With this movement of the “Plate Holder Head”, the thermal element position slightly moves back and forth against the “SA2_Platen”.

Supporting point

Ribbon

Media

SA2_Platen

For soft media

Plate Holder Head

For hard media

[Right side view]

SA Cover Frame (Fixed)

SA, Head

Spring Head Holder

[Section "B" upside-down view]

Groove

SA Head Adjust Lever

Supporting point

Cam Head Adjust

(Media Thickness Adjustment Dial)

CL-S6621 2-16

Operation of Each Mechanism

2-1-9. Transparent/Reflective Sensor Travelling Mechanism

The major components of the transparent/reflective sensor travelling mechanism are: (a) Gear Bevel Lead Screw U (Blue) (d) Shaft Lead Screw (Upper/Lower) (b) Gear Lead Screw L (e) Holder Sensor Adjust U (Transparent sensor) (c) Gear train (f) Holder Sensor Adjust L (Reflective Sensor)

The transparent sensor is incorporated in the “Holder Sensor Adjust U” and the reflective sensor is incorporated in the “Holder Sensor Adjust L”. Both sensor housings move to the right and left simultaneously by turning the “Gear Bevel Lead Screw U” (blue). Note that the sensor housings (“Holder Sensor Adjust U” and “Holder Sensor Adjust L”) are engaged with the groove of respective “Shaft Lead Screw” (upper and lower). Therefore, they move horizontally when the “Shaft Lead Screw” (upper and lower) turns.

When the “Gear Bevel Lead Screw U” (blue) turns in the direction as shown by the arrow (), the “Screw Lead Screw” (upper) turns (“a”) and the “Holder Sensor Adjust U” moves to the right (“a’ ”). At this time, via the gears (() and ()), the “Gear Lead Screw L” turns in the direction shown by the arrow (), and the “Screw Lead Screw” (lower) turns (“b”) and the “Holder Sensor Adjust L” moves to the right (“b’ “).

When the “Gear Bevel Lead Screw U” (blue) is turned reversely, the sensor housings move to the left.

Gear Lead Screw L

Shaft Lead Screw (Lower)

Holder Sensor Adjust L (Reflective Sensor)

Gear Bevel Lead Screw U (Blue)

Shaft Lead Screw

(Upper)

a’

Holder Sensor Adjust U (Transparent Sensor)

b’

2-17 CL-S6621

Operation of Control Parts

2-2. Operation of Control Parts

2-2-1. Configuration of Printer

The following shows major configuration blocks.

(Option) Auto Cutter

Cutter Moto

Cutter Motor Temp. Sensor

(Option) Peeler

Peel Sensor

Head Up Switch

[SA, Head Up Switch]

Adjustable Paper Sensors

Transparent Sensor

[SA TRA Sen PCB]

Reflective Sensor

[SA Ref Sen PCB]

Thermal Head Temp. Sensor

PF Motor Temp. Sensor

[SA, Head]

[SA PF Motor]

Paper Near End Sensor

[SA PNE Sensor]

Operation Panel

(SWx4/LEDx4)

[SA, Opepane PCB]

(JM66720-*)

Ribbon Sensor F

[SA, Ribbon Sensor]

Ribbon Sensor R

[SA, Ribbon Sensor]

Ribbon Motor Temp. Sensor

[SA Ribbon Motor F]

SA Ribbon Motor F

SA Ribbon Motor R

Fan

CUTTER PCB

(PPS00065-*)

DC Motor

Driver

Cutter

Position

Sensor

SA, MAIN PCB (PPS00058-*)

UPD703111BGJ-13-UEV-A

Buzzer

EP2C5F256C8N

Fan Driver

Stepping Moto

Driver x 2

SA, Ribbon PCB

(PPS00059-*)

CPU

128MHz

FPGA

SA, Relay PCB

(PPS00060-*)

AC Power Supply PWT20005-* (100V) PWT20006-* (200V)

Driver/Receiver

Control / C.G. F-ROM (64Mbits)

F-ROM (64Mbits)

S-DRAM (256Mbits)

Stepping Moto

RS232C

USB2.0

Controller

C.G.

Driver

(Option) Interface Board

IEEE1284

Ethernet I/F

(Standard type)

Ethernet I/F

(Multi-function type)

Wi-Fi I/F

RS232C

USB 2.0

(High Speed)

Thermal Print Head

(203dpi)

[SA, Head]

SA PF Motor

CL-S6621 2-18

Operation of Control Parts

Major functions of individual components are described below:

(1) AC power supply

Consists of a fuse, a filter circuit to eliminate external electric noise, and a switching type regulator to transform an AC input to +24V DC output required to drive the printer.

(2) SA, Main PCB

Controls the entire operations of the printer. It consists of CPU, Flash ROM, S-DRAM, FPGA (Field-Programmable Gate Array), driver circuits, etc.

(a) CPU

The CPU is a microprocessor with 32-bit architecture. The clock fed to the CPU is 16 MHz. The CPU internally multiplies this 16 MHz by 8 times and uses 128 MHz clock. The CPU includes cache memory, RAMs, DMA controller, serial I/F, USB function controller, A/D converter, etc.

(b) Flash ROM

A flash ROM of 64M bits (8M bytes) that stores the firmware and CG (character generator)

An S-DRAM of 256M bits (32M bytes) that is used as working area, input buffer and download buffer.

(d) FPGA

The FPGA (Field-Programmable Gate Array) incorporates a control circuit for the interface I/O port, motors, print head, etc.

(e) Serial I/F (RS-232C Driver/Receiver)

This is a circuit to transmit and receive serial data between the printer and the host. Serial I/F, USB I/F, Parallel I/F (Option), Wired LAN (Option) or Wireless LAN (Option) is automatically selected when data is received.

(f) USB I/F (High-speed USB2.0 Controller)

This is a circuit to transmit and receive serial data between the printer and the host using the high-speed USB2.0 I/F. Serial I/F, USB I/F, Parallel I/F (Option), Wired LAN (Option) or Wireless LAN (Option) is automatically selected when data is received.

(g) Stepping motor driver

This is a circuit to drive the “SA PF Motor”. The “SA PF Motor” is a stepping motor.

(h) Buzzer

The buzzer is driven when an alarm, etc. occurs.

2-19 CL-S6621

Operation of Control Parts

(3) Operation panel (SA, Opepane PCB)

Used to indicate the operating status of the printer and to set specifications. It consists of 4 keys and 4 LEDs.

(4) Thermal print head (SA, Head)

Makes printing on paper. The number of thermal elements (dots) is as follows. The thermal print head includes the print head driver circuit.

•1344 dots

(5) Sensors

The following 9 sensors are used in the printer:

Sensor name Description

Head Up Switch

A mechanical lever switch. (SA, Head Up Switch) Transparent Sensor A photo sensor using a phototransistor. (On the “SA

TRA Sen PCB”.) Reflective Sensor A photo sensor consisting of 2 LEDs and 1

phototransistor. (On the “SA Ref Sen PCB”.) Ribbon Sensor F Photo sensors (2 pcs.) using photointerrupters.

(Located on the “SA, Ribbon Sensor” on the front side.) Ribbon Sensor R Photo sensors (2 pcs.) using photointerrupters.

(Located on the “SA, Ribbon Sensor” on the rear side.) Thermal Head Temperature

A thermistor incorporated in the “SA, Head”. Sensor PF Motor Temperature Sensor A thermistor attached to the “SA PF Motor”.

Ribbon Motor Temperature Sensor A thermistor attached to the “SA Ribbon Motor F” (the

front side of ribbon motor).

Paper Near End Sensor A photo sensor using a photointerrupter. (On the “SA

PNE Sensor”.)

(6) Motors

Three motors are used.

- The “SA PF Motor” is a stepping motor to feed media.

- The “SA Ribbon Motor F” and “SA Ribbon Motor R” are stepping motors to take up and supply ribbon, respectively.

(7) SA, Ribbon PCB

Controls the operations of the “Unit, Ribbon”.

(a) Stepping motor driver

This is a circuit to drive the “SA Ribbon Motor F” on the front side for taking up ribbon and the “SA Ribbon Motor R” on the rear side for supplying ribbon. Both are stepping motors.

CL-S6621 2-20

(b) Fan driver

This is a fan drive circuit. The fan is used to cool both “SA Ribbon Motor F” and “SA Ribbon Motor R”. When the temperature of the “SA Ribbon Motor F” exceeds a certain value, the fan starts to rotate.

(8) SA, Relay PCB

Relays the signals between the “SA, Main PCB” and an optional I/F board.

(9) Optional I/F

(a) Parallel I/F (IEEE1284) (Option)

This is the parallel I/F to transmit and receive parallel data between the printer and the host. It supports Centronics Compatible mode, NIBBLE mode and ECP mode. Parallel I/F, serial I/F, or USB I/F is automatically selected when data is received.

(b) Wired LAN I/F (Option)

This is a circuit which supports Ethernet protocol. LAN connection is possible.

This is a circuit which supports wireless LAN protocol (IEEE802.11n/IEEE802.11g/ EEE802.11b).

Operation of Control Parts

2-21 CL-S6621

Operation of Control Parts

2-2-2. Memory map

0000000

001FFFF

0100000

0103FFF 0104000

0105FFF 0106000

0107FFF 0108000

011FFFF 0120000

030FFFF 0310000

04FFFFF

0710000

074FFFF

Command RAM

(Built-in CPU)

Boot Loader (1)

Setting Information

(User Settings)

Setting Information

(Factory-set Settings)

CPU

Boot Loader (2)

Firmware (Datamax)

Firmware (Zebra)

FPGA Data

8M bytes

Flash ROM

07E0000

07EFFFF

07F0000

07FFFFF

0800000

27FFFFF

8000000

80FFFFF

Service Information (Backup)

Service Information

Firmware (about 400K bytes) Receiving Buffer (16K bytes x 4)*

SDRAM

32M bytes

Command Buffer (128K bytes) Others

*: 16K bytes for each I/F (USB, IEEE1284, Serial,  USB for optional I/F)

I/O

FPGA

C000000

C3FFFFF C400000

C7FFFFF

F800000

F8FFFFF

FFFB000

FFFEFFF FFFF000

FFFFFFF

Download Area (4MByte)

Kanji Font (4MByte)

I/O

FROM 8MByte

USB2.0 Controller

Data RAM (Built-in CPU)

I/O (Built-in CPU)

CPU

CL-S6621 2-22

Operation of Control Parts

2-2-3. Sensors

(1) Head up switch

The “SA, Head Up Switch” is used to detect the head position (up or down).

When the “Unit, Head” is closed (in the down position), the ”Support Pop Up” of the “Unit, Head” pushes the “Pop Up Cover Frame” and the “SA, Head Up Switch” pushes the lever of the “SA, Head Up Switch” and the switch turns ON. Then, pin 117 (HDUSW) of U1A (CPU) goes "Low" level. When the “Unit, Head” is opened (in the up position), the ”Support Pop Up” is disengaged from the “Pop Up Cover Frame”, the lever of the “SA, Head Up Switch” is set free, and the switch turns OFF. Then, pin 117 (HDUSW) of U1A (CPU) goes "High" level.

R80

C99

+3.3V

R78

[SA, Main PCB]

["Unit, Head" Down Position]

SA, Head Up Switch

J11

(Blue)

SA, Head Up Switch

Head Up Switch

Support Pop Up

Pop Up Cover Frame

Spring Pop Up

U1A CPU

PDH3

117

HDUSW

Head Up: High Head Down: Low

Unit, Head

Support Pop Up

["Unit, Head" Up Position]

Pop Up Cover Frame

SA, Head Up Switch

Spring Pop Up

OFF

2-23 CL-S6621

Operation of Control Parts

(2) Transparent sensor and reflective sensor

The transparent sensor (“SA TRA Sen PCB”) is used to detect the label stuck on liner and the U-shaped notch on tag. On the other hand, the reflective sensor (“SA Ref Sen PCB”) is used to detect the black mark printed on the bottom surface of tag. Both sensors are also used to detect the media end. The upper side transparent sensor is the phototransistor, and the lower side reflective sensor consists of 2 LEDs and 1 phototransistor. Media passes between these sensors.

Transparent sensor output sensing terminal

Reflective sensor output sensing terminal

U1A CPU

ANI0

ANI1

U14 FPGA

B4_34

R14

B4_33

R13

From U1A CPU

SD ATA SCLK DACCS

TRAMON

C96

REFMON

TSNSCTL1

TSNSCTL0

U7 D/A Converter

CSB

BH2227

C97

AO1 AO2 AO3 AO4

R65

U20B 7

BA2904

U20A 1

BA2904

DTC114EM

PSNSLED

R72

Q10

Q7 DTC114EM

R66

R70

R73

R76

R74

R75

R68

R69

Q8 DTC114EM

R67

+3.3V

(White)

+5V

Q6 2SC5658

R71

[SA, Main PCB]

Transparent Sensor

[SA TRA Sen PCB]

[SA Ref Sen PCB]

Reflective Sensor

Transparent sensor (used for detecting the label or U-shaped notch):

When the liner without label stuck on it passes between both sensors, the light emitted from the LEDs reaches the transparent sensor, passing through the liner. Thus, the transparent sensor (phototransistor) conducts and the voltage corresponding to the amount of light is applied to pin 5 (TRAMON) of U1A (CPU). Meanwhile, when the liner with the label stuck on it passes between both sensors, the light is blocked by the label and the transparent sensor (phototransistor) turns OFF. Thus, pin 5 (TRAMON) of U1A (CPU) goes "Low" level. From the difference in these levels at pin 5 (TRAMON) of U1A (CPU), U1A (CPU) can detect the leading edge (arrival) of the label on the liner. When media runs out, the light directly falls on the transparent sensor and media end is detected. In this case, pin 5 of U1A (CPU) will go "High" level.

Media

CL-S6621 2-24

Operation of Control Parts

When the transparent sensor is conducted, the voltage at pin 5 (TRAMON) varies depending on the characteristics of the light receiving element (phototransistor) of the transparent sensor and other factors. To solve this problem, U14 (FPGA) outputs TSNSCTL0 (pin R13) and TSNSCTL1 (pin R14) signals to turn ON/OFF Q8 and Q7 to connect/disconnect R69 and R68 (voltage dividing resistors) to minimize the difference in level at pin5 (TRAMON).

The current flowing into the LEDs is determined by the data sent from the CPU to the digital-to-analog converter (U7). The digital-to-analog converter converts the data received from the CPU, and then outputs a resoultant level at pin 2. The base current of the transistor Q6 is determined by this level. This means that the current flowing into the LEDs is also determined by this level. In the actual control, the CPU changes data (for controlling the LED current) to keep the level at pin 5 (TRAMON) of CPU constant.

Reflective sensor (used for detecting the black mark on tag):

When tag with black marks is used, light is reflected by the tag. In the place where no black mark is there, the phototransistor of the reflective sensor conducts and the voltage corresponding to the amount of light is applied to pin 6 (REFMON) of U1A (CPU). When the light falls on the black mark, no light is reflected. In this case, the lower phototransistor turns OFF and pin 6 (REFMON) of U1A (CPU) will go “Low” level. When media runs out, the light is not reflected and no light falls on the reflective sensor. In this case, pin 6 (REFMON) of CPU will go “Low” level and media end is detected.

When the reflective sensor is conducted, the voltage at pin 6 (REFMON) varies depending on the characteristics of the light receiving element (phototransistor) of the reflective sensor and other factors. To solve this problem, U14 (FPGA) outputs TSNSCTL0 (pin R13) and TSNSCTL1 (pin R14) signals to turn ON/OFF Q10 and Q9 to connect/disconnect R75 and R74 (voltage dividing resistors) to minimize the difference in level at pin6 (REFMON).

As to the current control of the LEDs, the operation is the same as for the transparent sensor mentioned above.

2-25 CL-S6621

Operation of Control Parts

(3) Ribbon Sensor F/R

The ribbon sensor F (“SA, Ribbon Sensor” mounted on the front side) is used to detect the ribbon tension on the front side as well as ribbon running. While, the ribbon sensor R (“SA, Ribbon Sensor” mounted on the rear side) is used to detect the ribbon tension on the rear side as well as the ribbon end. These sensors are photointerrupters.

Front (Take-up side)

PT501

PS501

Ribbon Sensor1

(SA, Ribbon Sensor)

Ribbon Sensor2

R501

Rear (Supply side)

PT501

(Same as above circuit)

(SA, Ribbon Sensor)

U1A CPU

PCM0

PCM2

PCM3

PCM5

RIBSENS_A1

RIBSENS_A2

RIBSENS_B1

RIBSENS_B2

U2B

U2D

U2A

U2C

8 12

U21D

U21F

+3.3V

J102

J19

R137

R138

R136

C176

C177

RA20

C178

U21C

U21E

C175

R139

18-20 18-20

[SA, Main PCB]

SENS_A1

SENS_A2

SENS_B1

SENS_B2

[SA, Ribbon PCB]

+3.3V

J105

+3.3V

J104

Ribbon sensor F:

The ribbon sensor F is used to keep the ribbon tension on the front side constant. When printing starts, ribbon is fed and then the front side ribbon slacks. Then, the claws of the “SA, Ribbon Tension Shaft F” come off the photointerrupters on the “SA, Ribbon Sensor” and the photointerrupters turn ON. Thus, pin 34/32 (RIBSENS_A1/A2) of U1A (CPU) goes "High" level. In this case, U1A (CPU) increases the revolution speed of “SA Ribbon Motor F” to take up the slack of ribbon. As a result, ribbon tightens and the claws are inserted into respective photointerrupters. Thus, pin 34/32 (RIBSENS_A1/A2) of U1A (CPU) goes "Low" level. Then, U1A (CPU) slows down the revolution speed of “SA Ribbon Motor F”. During printing, this cycle is repeated and constant ribbon tension is maintained.

If ribbon is not correctly fed during printing, the ON/OFF state of the photointerrupters on the “SA, Ribbon Sensor” becomes improper. Thus, the CPU can detect an abnormal ribbon feed.

Ribbon sensor R:

The ribbon sensor R is used to keep the ribbon tension on the rear side constant. When printing starts, ribbon is fed and the rear side ribbon tightens. Then, the claws of the “SA, Ribbon Tension Shaft R” are inserted into respective photointerrupters on the “SA, Ribbon Sensor” and the photointerrupters turn OFF. Thus, pin 31/29 (RIBSENS_B1/B2) of U1A (CPU) goes "Low" level. In this case, U1A (CPU) increases the revolution speed of “SA Ribbon Motor R” to supply ribbon faster. As a result, ribbon slacks and the claw comes off the photointerrupter. Thus, pin 31/29 (RIBSENS_B1/B2) of U1A (CPU) goes "High" level. Then, U1A (CPU) slows down the revolution speed of the “SA Ribbon Motor R”. During printing, this cycle is repeated and constant ribbon tension is maintained.

When ribbon runs out, the ON/OFF state of the photointerrupters on the “SA, Ribbon Sensor” becomes unchangeable. Thus, the CPU can detect the ribbon end.

PS502

R502

CL-S6621 2-26

Operation of Control Parts

(4) Head temperature sensor

The head temperature sensor is used to detect the temperature of the “SA, Head”. This sensor is a thermistor incorporated in the “SA, Head”. Since the resistance of the thermistor changes according to a temperature change, the voltage at pin 7 (HDTMP) of U1A (CPU) changes accordingly. The CPU senses the voltage at pin 7 (HDTMP) to detect the head temperature. According to the temperature of the “SA, Head”, the CPU controls the printing pulse width applied to the thermal elements to keep the printing density constant.

U1A CPU

ANI2

HDTMP

R54

C82

+3.3V

R53

HDTMP

SA, Head

Head Temp.

Thermistor

U14 FPGA

B2_28

nTEMP_ENABLE

C11

B2_27

nTEMP_ERROR

+3.3V

R40

R41

R42

Error: Low

TEMP ERROR Detection

+3.3V

HDTMP

C41

U16B

BA2903SFV

[SA, Main PCB]

R39

Printing operation when the head temperature rises: If the head temperature reaches 70°C (158°F), printing stops after printing the current label. In this case, the PRINT LED and CONDITION LED simultaneously blink on the operation panel. When the temperature of the “SA, Head” falls below 60°C (140°F), the LEDs stop blinking and printing will be resumed.

Printing

60°C

(140°F)

Printing

(Stop)

(Stops)

70°C

(158°F)

For further safety, an abnormally high temperature detection circuit is provided. In case this circuit is activated, the System error is displayed, and the printer stops. The comparator U16B detects if the level at pin 5 (HDTMP) (i.e., the temperature of the “SA, Head”) exceeds a certain reference level determined by the output from pin C11 (nTEMP_ENABLE) of U14 (FPGA) (i.e., the predetermined allowable limit temperature). If it does, nTEMP_ERROR at pin C6 goes “Low” level and this signal is fed to U14 (FPGA). Then, the System error is displayed and the printer stops. At this time, nTEMP_ENABLE at pin C11 is set to “Low” level so that nTEMP_ERROR is securely maintained at “Low” level. (To clear the System error, you need to turn OFF the printer once and then turn it ON.)

2-27 CL-S6621

Operation of Control Parts

(5) PF motor temperature sensor

The PF motor temperature sensor is used to detect the temperature of the “SA PF Motor”. This sensor is a thermistor bonded to the “SA PF Motor”. Since the resistance of the thermistor changes according to a temperature change, the voltage at pin 8 (PFTMP) of U1A (CPU) changes accordingly. The CPU senses the voltage at pin 8 (PFTMP) to detect the PF motor temperature.

U1A CPU

ANI3

PFTMP

R64

C94

+3.3V

R63

SA PF Motor

Thermistor

U14 FPGA

B2_28

nTEMP_ENABLE

C11

+3.3V

R40

R41

R42

TEMP ERROR Detection

U16A

PFTMP

C41

BA2903SFV

+3.3V

R39

B2_27

nTEMP_ERROR

Error: Low

[SA, Main PCB]

Printing operation when motor temperature rises:

When the temperature of the “SA PF Motor” rises above 90°C (194°F), printing speed is reduced to avoid overheating. If it reaches 95°C (203°F), the “SA PF Motor” stops after printing the current label. In this case, the PRINT LED and CONDITION LED alternately blink on the operation panel. When the temperature of the “SA PF Motor” falls below 85°C (185°F), the LEDs stop blink and printing will be resumed.

Normal speed

85°C

(185°F)

Normal speed

(Stop)

90°C

(194°F)

Low speed

(Stop)

(Stops)

95°C

(203°F)

For further safety, an abnormally high temperature detection circuit is provided. In case this circuit is activated, the System error is displayed, and the printer stops. The comparator U16A detects if the level at pin 8 (PFTMP) (i.e., the temperature of the “SA PF Motor”) exceeds a certain reference level determined by the output from pin C11 (nTEMP_ENABLE) of U14 (FPGA) (i.e., the predetermined allowable limit temperature). If it does, nTEMP_ERROR at pin C6 goes “Low” level and this signal is fed to U14 (FPGA). Then, the System error is displayed and the printer stops. At this time, nTEMP_ENABLE at pin C11 is set to “Low” level so that nTEMP_ERROR is securely maintained at “Low” level. (To clear the System error, you need to turn OFF the printer once and then turn it ON.)

CL-S6621 2-28

Operation of Control Parts

(6) Ribbon motor temperature sensor

The ribbon motor temperature sensor is used to detect the temperature of the “SA Ribbon Motor F” on the front side. This sensor is a thermistor bonded to the “SA Ribbon Motor F”. Since the resistance of the thermistor changes according to a temperature change, the voltage at pin 11 (RBTMP) of U1A (CPU) changes accordingly. The CPU senses the voltage at pin 11 to detect the temperature of the “SA Ribbon Motor F”.

U1A CPU

ANI6

RBTMP

R135

C172

+3.3V

R134

J19

J102

J107

RBMTH

SA Ribbon Motor F (Take-up Side)

Thermistor

U14 FPGA

B2_28

B2_27

nTEMP_ENABLE

C11

nTEMP_ERROR

+3.3V

R40

R41

R42

Error: Low

TEMP ERROR Detection

RBTMP

C41

U17A

BA2903SFV

[SA, Main PCB]

+3.3V

R39

[SA, Ribbon PCB]

Printing operation at ribbon motor temperature rise:

When the temperature of the “SA Ribbon Motor F” reaches 85

°C (185°F), the “SA Ribbon

Motor F” stops after printing the current label. In this case, the PRINT LED and CONDITION LED alternately blink on the operation panel. When the temperature of the “SA Ribbon Motor F” falls below 80

°C (176°F), the LEDs stop

blink and printing resumes.

Normal speed

80°C

(176

Normal speed

°F)

(Stop)

(Stops)

85°C

°F)

(185

For further safety, an abnormally high temperature detection circuit is provided. In case this circuit is activated, the System error is displayed, and the printer stops. The comparator U17A detects if the level at pin 3 (RBTMP) (i.e., the temperature of the “SA Ribbon Motor F”) exceeds a certain reference level determined by the output from pin C11 (nTEMP_ENABLE) of U14 (FPGA) (i.e., the predetermined allowable limit temperature). If it does, nTEMP_ERROR at pin C6 goes “Low” level and this signal is fed to U14 (FPGA). Then, the System error is displayed and the printer stops. At this time, nTEMP_ENABLE at pin C11 is set to “Low” level so that nTEMP_ERROR is securely maintained at “Low” level. (To clear the System error, you need to turn OFF the printer once and then turn it ON.)

2-29 CL-S6621

Operation of Control Parts

(7) Paper Near End sensor

The paper near end sensor (“SA PNE Sensor”) is used to detect a paper near end status of roll paper installed in the printer. By default, issuing a paper near end alarm is disabled. To enable it, you need to change the Paper Near End Alarm submenu under the “PageSetup” main menu from Off to On.

Before a paper near end status occurs, the “Lever PNE” is pushed by the roll paper edge and the “Slider PNE” of the paper shaft is engaged with the “SA PNE Sensor”. Then, pin 77 (PNESNS) of U1A (CPU) goes "High" level, and the non paper near end status is detected by the CPU. When the roll paper diameter reaches the paper near end point being mechanically set, the “Lever PNE” that was pushed by the roll paper edge pops up and the “Slider PNE” of the paper shaft comes off the “SA PNE Sensor”. Then, pin 77 (PNESNS) of U1A (CPU) goes "Low" level, and the paper near end status is detected by the CPU. (Q12 turns ON in normal mode (i.e., in other than power saving mode).)

U1A CPU

D18

PCT7

L: Power Saving mode H: Normal mode

PWRSAVE

114

PNESNS

U21A

Q13 DTC115EM

C103

R89

+3.3V

Q12 DTA114EM

R90

R91

J12

(White)

Paper Near End Sensor

(SA PNE Sensor)

PT301

PS301

[SA, Main PCB]

[Normal Status]

[PNE (Paper Near End) Status]

Roll Paper Holder

SA PNE Sensor

Spring PNE

Lever PNE

Roll Paper

Spring PNE

SA PNE Sensor

Lever PNE

Roll Paper

Slider PNE

CL-S6621 2-30

Operation of Control Parts

2-2-4. Drivers

(1) PF motor driver

This is a driving circuit to drive the “SA PF Motor” (stepping motor). The following illustration shows a simplified circuit. The “SA PF Motor” is driven by the unipolar constant current chopper method. The exciting method for the motor is the 1-2 phase method. The power to the “SA PF Motor” is controlled by U14 (FPGA). When pin P1 (VMTON) is “High” level, Q27 and Q25 turn ON and +24V is supplied to the “SA PF Motor”. The exciting method is determined by PFMD1 and PFMD2 signals sent from U14 (FPGA) to U19 (Motor Driver). The rotational direction of the “SA PF Motor” is determined by PFDIR signal and PFCLK signal is a clock signal for turning the “SA PF Motor”. The digital-to-analog converter (U7) is used to control the PF motor current. Its output is controlled by the data sent from U1A (CPU).

U14 FPGA

B1_37

From U1A CPU

U14 FPGA

B1_39

Low: Turns on Q25 to supply

power to "SA Motor PF".

VMTON

R116

U7 D/A Converter

SD ATA SCLK DACCS

PFOFF

12 11 10

This circuit is not used.

DI CK CSB

BH2227

AO1 AO2 AO3 AO4

R114

Q27 DTC114EM

PFMOTCU

R112

Q25 NP15P06SLG

From U14 FPGA

To/From U1A CPU

R58

+24V

C121

PFMD1 PFMD2

PFENB

PFDIR

PFCLK

PFFLAG

R59

R60

DTC114EM

VMT

7 8

9 16 10 18

C93

U19 Motor Driver

VBB

M1 M2 M3 CW/CCW CLOCK FLAG

REF/SLEEP1

SLA7073MPRT

OUTA1 OUTA2 OUTA1 OUTA2 OUTB1 OUTB2 OUTB1 OUTB2

1 2

4 22 23

20 21

[SA, Main PCB]

SA PF Motor

PF Motor

2-31 CL-S6621

Operation of Control Parts

(2) Ribbon motor driver

This is a driving circuit to drive the “SA Ribbon Motor F” and “SA Ribbon Motor R” (stepping motors). The “SA Ribbon Motor F” is used to take up ribbon, while the “SA Ribbon Motor R” is used to supply ribbon.

Since the motor drive circuit is the same as for both motors, the following describes only for the “SA Ribbon Motor F” that takes up ribbon. The “SA Ribbon Motor F” is driven by U101 (Motor Driver) via the RIBSTEP_A signal sent from U1A (CPU). The rotational direction of the motor is determined by the RIBDIR_A signal sent from U14 (FPGA). The strength of PF motor excitation (strong and weak) or PF motor current is controlled by the RBMOTCU signal sent from the U7 (D/A Converter) via U1A (CPU).

Ribbon motor forcible stop function by circuitry: The CPU monitors the temperature of the “SA Ribbon Motor F” and stops it if its temperature reaches a certain level, as mentioned in “(6) Ribbon motor temperature sensor”. In addition to this function, for further safety measures, a circuitry is provided to forcibly stop the ribbon motors. When the signal nTEMP_ERROR becomes “Low” level, pin2 (ENABLE) of U101 and U102 becomes “High” level, resulting in stopping the “SA Ribbon Motor F” as well as “SA Ribbon Motor R”. The signal nTEMP_ERROR is an ORed error of the following signals.

- Abnormal ribbon motor temperature

- Abnormal PF motor temperature

- Abnormal head temperature

- Abnormal cutter temperature (Optional)

U1A CPU

U14 FPGA

From U1A CPU

SD ATA SCLK DACCS

From U14 FPGA

From U1A CPU

(From Ribbon Motor Temperature Sensor)

B3_37

B3_38

12 11 10

BH2227

RIBTRG

nGRESET

122

D24

126

D28

N13

N14

U7 D/A Converter

AO1

AO2

AO3

CSB

AO4

U15B Monostable Multivibrator

CLR

nTEMP_ERROR

Normally "High". Error: Low

R144

RBMOTCU_A

RBMOTCU_B

74VHC123

VMT (24V)

J19

3,4

RIBSTEP_A

RIBSTEP_B

RIBDIR_A

RIBDIR_B

U29

[SA, Main PCB]

J102

3,4

RIBSTEP_A

RIBSTEP_B

RIBDIR_A

RIBDIR_B

RBMOTCU_A

RBMOTCU_B

MOT_EN

[SA, Ribbon PCB]

VMT

(24V)

VMT

U101 Motor Driver

VBB1

VBB2

STEP

DIR

ENABLE

REF

A4984SES-T

U102 Motor Driver

(Same as above circuit)

OUT1A

OUT1B

OUT2A

OUT2B

J101

J103

SA Ribbon Motor F (Take-up Side)

SA Ribbon Motor R (Supply Side)

CL-S6621 2-32

Operation of Control Parts

(3) Head driver

The head driver is incorporated in the “SA, Head”. During printing, pin P16 (VHDON) of U14 (FPGA) goes "High" level, Q28 and Q26 turn ON, and +24V (VHD) is supplied to the “SA, Head”. The print data is sent fromU14 (FPGA) to the head driver in the “SA, Head” to select the thermal elements to be heated. The data is sent from HD1-HD4, nHDSTB, HDCLK and nHDLAT signal lines (pins K15, K16, M16, M14, N16, N15 and P14 of U14). According to the print data received, the “SA, Head” heats the thermal elements to print dots on paper. The width of heating pulse will be changed according to the head temperature to keep the printing density constant.

U14 FPGA

Head supply voltage ON/OFF

R113

+24V

Head power supply monitor: Not used.

+3.3V

B3_43

B3_42

B3-26

B3-27

B3_35

B3_33

B3_40 B3_39

B3_41

P16

VHDON

R117

P15

nHCVON

Thermal element abnormality check ON

K15

K16 M16

M14

N16 N15

P14

HD1

HD2

HD3

HD4

nHDSTB

HDCLK

nHDLAT

DTA114EM

R115

Q28 DTC114EM

R52 L1

C122

Q26

2SJ505S

+3.3V

R45

When checking: +3.3V

VHD

R47

VHD

When printing: +24V

+3.3V

R55

R48

R49

+3.3V

R46

C74

+3.3V

17,21,22

HD1

HD2

HD3

HD4

nHDSTB

HDCLK

nHDLAT

5,19,20

VHDMON

C75

HDRES

Thermal element abnormality check

1-5

6-10

2,15

VHD

GND

VDD

GND

[SA, Main PCB]

U1A CPU

ANI4

ANI5

SA, Head (Thermal Head)

2-33 CL-S6621

Operation of Control Parts

Thermal resistance check:

When the printer is turned ON, the thermal resistance check is conducted. If any fault is found, it is memorized and, when the printer is turned ON next time, the CONDITION LED and ERROR LED alternately blink on the operation panel.

During the thermal resistance check, pin P15 (nHCVON) of U14 (FPGA) goes "Low" level, Q1 turns ON, and +3.3V is supplied to the “SA, Head”, instead of +24V. The following is a simplified circuitry under checking, where Q1 turns ON and +3.3V is applied to the “SA, Head”. The thermal resistance check (dot check) is done by selecting each thermal element (dot) one by one. In the following example, a thermal element with resistance R1 is selected (rest of the thermal elements are disconnected). At the point "A", the voltage divided by R45 and R1 is developed. The CPU monitors this voltage at pin 10 (HDRES) and checks if the voltage is out of the allowable range. If it is, the CPU judges that the thermal element is defective. (For example, if R1 is open, the voltage at point “A” will be about +3.3V. If R1 is open, corresponding dot will be missing.)

+3.3V

R45

R46

+3.3V

OFF

HDRES

SA, Head (Thermal Head)

U1A CPU

ANI5

R1, R2, ... ,Rn: Resistance of thermal elements

To see the total number of defective thermal elements:

You can print the total number of defective thermal elements in Service mode. For details, refer to “(3) Factory/Service mode” and “(3-3) Factory/Service Mode menu table -

(b) Service Mode menu table”.

The number will be printed as follows. Bad head element: n dot(s) Where, n is a number. If no defective thermal element is found, n is 0.

CL-S6621 2-34

Operation of Control Parts

g.)

(4) Buzzer driver

This circuit drives the buzzer. To sound the buzzer, the CPU outputs a pulse waveform from pin 171 (BUZZER). The transistor Q24 turns ON and OFF, and the buzzer sounds.

+24V

U1A CPU

BZ1

R111

171

P77

BUZZER

Q24 DTC114EM

[SA, Main PCB]

(5) Fan driver

This circuit drives the cooling fan (“SA, Fan”) for ribbon motors.

When pin 130 (FANCTL_R) is set to “Low” level, Q101 turns ON and the fan is driven. The fan is driven according to the temperature raise of the “SA Ribbon Motor F”. When the temperature detected by the thermistor bonded to the “SA Ribbon Motor F” is under 45

°C (113°F), the fan is not driven.

When the temperature exceeds 45

°C (113°F) during ribbon motor running, the fan starts to

turn. If the temperature is 60 turned until the temperature falls below 60

Fan does not turn.

°C (140°F) or more after the ribbon motor is stopped, the fan is kept

°C (140°F).

45°C

(113

°F)

Fan turns.

(While ribbon motor is

runnin

60°C

(140

°F)

Fan turns.

- While ribbon motor is running.

- Even if motor is not running.

U1A CPU

D30

FANCTL_R

130

+5V

J19

18-20

J102

+5V

FANCTL

18-20

R107

D101

Q101

2SK3664

+5V

J106

SA, Fan

[SA, Main PCB]

[SA, Ribbon PCB]

2-35 CL-S6621

Operation of Control Parts

2-2-5. Other circuits

(1) Power supply circuit

The “SA, Main PCB” receives +24V from the “Unit, Power Supply” and produces each DC power. U22, U24 and U23 are DC-DC converter ICs to produce +5V, +3.3V and +1.5V/+1.2V from +24V, respectively. The DC power produced and their purposes are as follows: +24V: For driving circuits +5V: For transparent/reflective circuit, “SA, Ribbon PCB”, optional I/F, etc. +3.3V: For logic circuits, LED, etc. +1.5V: For U1 (CPU) +1.2V: For U14 (FPGA)

If +1.5V for CPU is not produced, Q22 turns OFF and +3.3V for logic circuits is shut off for safety. When pin 114 (PWRSAVE) of U1A (CPU) goes “Low”, Q19 turns OFF and the “Unit, Power Supply” enters Power Saving mode. In Power Saving mode, the DC output from the “Unit, Power Supply” is changed over from +24V to approx. +9V. (Power saving mode is effective if the “Standby Mode” submenu under the “System Setup” main menu is set to “On”. However, it is set to “Off” at factory default.)

From Unit, Power Supply

J15

[SA, Main PCB]

C105

Q19

DTC115EM

+24V

C106

+5V Regulator

U22 DC-DC Converter

10 11

VIN

R1243S001C

U24 DC-DC Converter

PVIN1 PVIN2 PVIN3

VIN

PAM2307AJEADJR

+3.3V Regulator

L: Power Saving mode H: Normal mode

SW1 SW2 SW3

14 15

+3.3V

PWRSAVE

+5V

+1.5V/+1.2V Regulator

U23 DC-DC Converter

VIN1

VIN2

PAM2306AYPCB

Q22

114

LX1 FB1

LX2 FB2

U1A CPU

D18

8 4

Q23

+1.5V

+1.2V

+3.3V

CL-S6621 2-36

Operation of Control Parts

(2) Reset circuit

This circuit performs the system reset.

When power is turned ON, +3.3V increases gradually from 0V. When the voltage at pin 2 (+3.3V) of U6 (Voltage detector) reaches approx. at 2.8 V, nRESET33 signal goes from “Low” to “High” level after a certain delay time (determined by C7 at pin 5 of U3) has passed. While nRESET33 signal is “Low”, U1A (CPU) and U14 (FPGA) are reset. Also, by nGRESET signal output from U1A (CPU), U14 (FPGA) and other circuits are reset.

nRESET33

+3.3V

Power ON

Reset

+3.3V

U6 Voltage Detector

VDD

VSS

S-1009C28I-M5T1U

OUT

nRESET33

[SA, Main PCB]

L : Reset

nGRESET

nRESET33

nGRESET

C14

G13

U1A CPU

RESET

P52

U14 FPGA

B3_1

B3_17

(3) Clock circuit

Crystal oscillator X1 oscillates a 16 MHz clock. This clock is send to U1A (CPU) and the CPU generates a 128 MHz internal clock and 64 MHz clock. The 64MHz clock is fed to U14 (FPGA) and U13 (SDRAM) X2 (Clock generator) oscillates a 48 MHz clock used for optional I/F control.

164

165

159

U1A CPU

P10

PCD1

Bus Clock

(64MHz)

R11

BUSCLK

Internal Clock

(128MHz)

D15

System Clock

(16MHz)

Clock for optional I/F

(48MHz)

[SA, Main PCB]

16MHz

+3.3V

Clock Generator

DSC8002DI1(48MHz)

nGRESET

U14 FPGA

B3_6

BUSCLK

2-37 CL-S6621

Operation of Control Parts

(4) Ope-pane circuit

The ope-pane circuit consists of 4 LEDs and 4 switches. U14 (FPGA) controls the transistors (Q2 to Q4) to turn ON/OFF the LEDs. Each switch signal is input to U1A (CPU). (The following shows the simplified circuit diagram.)

U14 FPGA

B3_31

B3_30

B1_9

L16

L15

LED_G

R140

LED_O

R141

LED_R

R142

DTC114EM

PRTLED

CNDLED

ERRLED

SW/FEED

SW/PAUSE

SW/STOP

SW/MODE To U1A CPU

+3.3V

CN301

D301

+3.3V

D302

D303

D304

SW301

SW302

SW303

SW304

+3.3V

POWER ON (Green)

PRINT (Green)

CONDITION (Orange)

ERROR (Red)

FEED

PAUSE

STOP

MODE/REPEAT

[SA, Main PCB]

[SA, Opepane PCB]

(5) USB I/F control circuit

The USB I/F control circuit supports the interface with a high-speed USB2.0 device. It consists of U28 (high-speed USB2.0 controller) and peripheral circuits. X3 (clock generator) generates a 48MHz clock for U28. Pins 41 (VBUS), 39 (DM0) and 40 (DP0) are for USB interface. U28 is controlled by U1A (CPU).

+3.3V

Clock for USB2.0

(48MHz)

To/From U1A CPU

Clock Generator

DSC8002DI1 (48MHz)

nRD LLDQM/nLLBE

LUDQM/nLUBE

nUSBCS

UB2INTP0 UB2INTP1 UBREQ

UBACK

nGRESET

D0-D15

A1-A7

R129

U28 High Speed USB2.0 Controller

XIN

VBUS

62-69 72-79

D0-D15

47-49 52-55

A1-A7

RD_N

WR0_N

WR1_N

CS_N

INT_N

SOF_N

DREQ0_N

DACK0_N

RST_N

R8A66597FP

DM0

DP0

C137

High when USB connector is connected.

C138

USBVCC

USBLGND

[SA, Main PCB]

J18

USB I/F

CL-S6621 2-38

Operation of Control Parts

(6) RS232C I/F circuit

The RS232C I/F circuit consists of U25 and U26 (receiver/transmitter) and receives and transmits the RS232C I/F signals.

+3.3V

TXD1

DTR1

RXD1 DSR1

nGRESET

To/From U1A CPU

RTS1

CTS1

RS_INIT

U25 Receiver/Transmitter

Vcc

T1IN

T2IN

R1OUT

R2OUT

SHDN

ICL3222EIVZ

+3.3V

U26 Receiver/Transmitter

Vcc

T1IN

T2IN

R1OUT

R2OUT

T1OUT T2OUT

R1IN R2IN

T1OUT T2OUT

R1IN R2IN

J16

TXD

DTR RXD DSR RTS

CTS INIT

2 20

3 6 4 5

RS232C I/F

nGRESET

SHDN

ICL3222EIVZ

[SA, Main PCB]

(7) Option I/F circuit

The optional I/F circuit consists of an ordinary USB interface circuit and communication I/F signal lines that are connected to U1A (CPU) and U14 (FPGA). NAND gates (U27A, U27B and U27C) and transistor Q29 consist of a USB connection detecting circuit. When USB I/F is connected to the printer, pin 23 (VBUS) of J17 is set to “High”. The detection circuit detects this level and outputs a UBINTP pulse to the CPU to inform of the USB connection.

+24V

+5V

U1A CPU

P76

D23

UDP

UDM

172

121

160 161

USBON

UBINTP

UDP

UDM

USB connection detecting circuit

+3.3V

Q29

DTA114EM

U27A

U27B

+3.3V

U27C

R128

5 4

R125

C133

To/From U14 FPGA

To/From U1A CPU

R126

R127

nSLCT-IN/CTS, nATFD-XT/DSR nSTROBE/OCIO, nINIT/nPRIME BUSY/RTS, nACKNLG/DTR nFAULT, SLCT/PPON0 PE, DSWOUT, TXD0/SO0/OBDIR

IFRESET

High when USB connector is connected.

DATA0-DATA7

RXD0/SI0, SCK0

VBUS

USB_D+

USB_D-

33-38,40

[SA, Main PCB]

28-32

4-11

1-3 12-18 24,27

25,26

J17

I/F PCB (Option)

2-39 CL-S6621

Operation of Control Parts

(8) Peeler circuit (for optional peeler)

The peeler circuit supplies +5V to an optional peeler by turning Q15 and Q14 ON. When a peeler is installed in the printer, pin 80 (CPRTYP1) is set to “Low” level. With this “Low” level signal, the printer recognizes the connected peeler. (The CPU judges the connected optional device (either peeler or cutter) by detecting signals CPRTYP0 (at pin 81) and CPRTYP1 (at pin 80). The signal CPRTYP0 for an optional cutter is now at “High” level (not connected). ) A peel sensor detects the printed label that is peeled off by the peeler. Upon detection of the label peeled, printing stops and the printer waits for removal of the label. When you remove the label, the peeler sensor detects it and the printer resumes printing. The peel sensor signal is input to pin 12 (ANI7) of U1A (CPU). From the input level of this signal, the CPU detects the peeler condition. (Since pin 80 (CPRTYP1) is “Low” level, Q16 turns OFF and U3 (analog switch) is ON.)

U1A CPU

D18

PCT2

PCT3

ANI7

L: Power Saving mode H: Normal mode

PWRSAVE

114

CPRTYP0

CPRTYP1

PEELSENS (CUTTMP)

Switch: ON (Fixed)

+3.3V

Q15 DTC115EM

L: When Peeler installed.

R88

PEELSENS

(Analog Switch)

R87

Q16

DTC114EM

+5V

Q14 2SJ625

+3.3V

R86

C102

+3.3V

R92

R93

[SA, Main PCB]

R83

J13

Peeler Control Circuit

GND

CPRTYP1

+5V

PEELSENS

CL-S6621 2-40

Operation of Control Parts

(9) Cutter control circuit (for optional cutter)

The cutter control circuit supplies VMT (+24V) to an optional cutter. When a cutter is installed in the printer, pin 81 (CPRTYP0) is set to “Low” level. With this “Low” level signal, the printer recognizes the connected cutter. (The CPU judges the connected optional device (either peeler or cutter) by detecting signals CPRTYP0 (at pin 81) and CPRTYP1 (at pin 80). The signal CPRTYP1 for an optional peer is now at “High” level (not connected). ) The cutter action is controlled by the signals CUTCON0 and CUTCON1 (at pins N1 and N2) output from U14 (FPGA). The cutter home position signal is input to pin 118 (CUTHP) of U1A (CPU).

A thermistor is attached to the cutter motor for detecting the motor temperature. The signal from the thermistor is input to pin 12 (CUTTMP) of U1A (CPU). The CPU detects the temperature by monitoring the signal CUTTMP and, if the temperature reaches 78

°C (108.4°F),

the cutter motor stops its operation. At this time, an error is issued and the PRINT LED and CONDITION LED blink alternatively. Wait until the cutter motor gets cool. When the temperature of the cutter motor falls below 70°C (185°F), the cutter operation will automatically resume.

U14 FPGA

B1_33

B1_34

U1A CPU

D20

PCT2

PCT3

CUTCON0

CUTHP

118

CPRTYP0

81 CPRTYP1

CUTCON1

+3.3V

C98

L: When Cutter installed.

R84

+3.3V

RA18

Q11 DTC114EM

R77

C101

ANI7

CUTTMP (PEELSENS)

Switch: ON (Fixed)

(Analog Switch)

U14 FPGA

B2_28

B2_27

nTEMP_ENABLE

C11

nTEMP_ERROR

+3.3V

R40

R41

R42

Error: Low

CUTTMP

TEMP ERROR Detection

CUTTMP

C41

R81

C100

(+24V)

VMT

+3.3V

R82

R85

+3.3V

R79

+3.3V

U17B

BA2903SFV

R39

[SA, Main PCB]

J10

Cutter Control Circuit

+24V +24V

CUTCTL0

CUTCTL1

CUTHP

CUTTH

CPRTYP0

GND

For further safety, an abnormally high temperature detection circuit is provided. In case this circuit is activated, the System error is displayed, and the printer stops.

2-41 CL-S6621

Operation of Control Parts

The comparator U17B detects if the level at pin 5 (CUTTMP) exceeds a certain reference level determined by the output from pin C11 (nTEMP_ENABLE) of U14 (FPGA) (i.e., the predetermined allowable limit temperature). If it does, the signal nTEMP_ERROR at pin C6 of U14 (FPGA) goes “Low” level. Then, the System error is displayed and the printer stops. At this time, nTEMP_ENABLE at pin C11 is set to “Low” level so that nTEMP_ERROR is securely maintained at “Low” level. (To clear the System error, you need to turn OFF the printer once and then turn it ON.)

CL-S6621 2-42

Operation Panel

2-3. Operation Panel

Operation panel is located on the left/front side of the printer. Operation panel consists of 4 keys and 4 LEDs, which perform to set the condition of the printer and indicate the operating condition.

PAUSE

MODE/REPEAT

POWER

CONDITION

ERROR

FEED

STOP

2-3-1. External view

(1) Keys

There are 4 keys, [MODE/REPEAT], [PAUSE], [FEED] and [STOP]. The function name on the key is selected when the key is pressed.

(2) LEDs

There are 4 LEDs, POWER, PRINT, CONDITION and ERROR. The LEDs light up or blink to indicate printer status, setting modes, or error conditions. POWER LED lights up when power is turned on. (green) PRINT LED lights up when the printer is ready to print (on-line state). (green) It is also used in Menu Setting mode and Sensor Adjustment mode. CONDITION LED lights up in Menu Setting mode or Sensor Adjustment mode. (orange) ERROR LED lights or blinks when error occurs. (red) (To indicate an error, PRINT and CONDITION LEDs will be also used.)

2-43 CL-S6621

Operation Panel

2-3-2. Operation using the keys

The following explains the normal operation and test operation accessible by pressing and holding the keys while turning ON the power. In this manual, pressing and holding the key while turning the power ON is described as follows:

Example: [MODE] + [POWER] (to enter menu setting mode)

[Key name]

(1) Normal operation

The following two operations are available.

Operation Description Remarks [PAUSE] + [FEED] + [STOP] + [POWER]

[MODE] + [POWER] Enters menu setting mode.

(1-1) Sensor adjustment mode

According to media to be used, you need to perform the sensor adjustment. The following shows the rough description how to adjust the sensor. For details, refer to the User’s manual. Before performing the sensor adjustment, select the Media Sensor menu (“See Through”, “Reflect”, or “None”) according to media to be used. See “ next page. Media Sensor menu See Through Label paper or tag with U-shaped notches Reflect Tag with black marks None Continuous media

All operations are made with the key.

1. Entering the sensor adjustment mode ([PAUSE] + [FEED] + [STOP] + [POWER])

2. Selecting the sensor to be used (either the transparent sensor or reflective sensor) Transparent sensor: Label paper, Tag with U-shaped notches Reflective sensor: Tag with black marks

3. Positioning of the sensor(s) against media

4. Sensitivity adjustment using actual media to be used

Media

Enters sensor adjustment mode.

[POWER]

See “(1-1) Sensor

adjustment mode”. For

details, see the User's Manual. See “(1-2) Menu setting

mode”. For details, see the

User's Manual.

(1-2) Menu setting mode” on the

CL-S6621 2-44

Operation Panel

(1-2) Menu setting mode

Set the menu according to your requirements. The following shows the menu settings print sample. To enter this mode, while pressing and holding the [MODE] key, turn ON the power. ([MODE] + [POWER]) For details, refer to the User’s Manual.

Machine Information

Model Number : CL-S6621 Boot Version : X.X ROM Version : EBXXXXXX ROM Date(DD//MM//YY) : XX/XX/XX ROM Check Sum : XXXX FPGA Version : XXXXXXX Head Check : OK Print Counter : 0000.068km Service Counter : 0000.068km Cut Counter : 0 Sensor Monitor : 2.53V Option Interface : None

Note:

Citizen continually enhances its printers with new options and settings based on our customer’s requests. Extra or changed menu items may appear on the print out in some cases.

Current Menu Settings

[Global Config Menu] Config Set : 1

[PageSetup Menu] Print Speed : 6 IPS Print Darkness : 10 Darkness Adjust : 00 Print Method : Thermal Transfer Ribbon Winding : Outside Continuous Media Length : 4.00 inch Vertical Position : 0.00 inch Horizontal Shift : 0.00 inch Vertical Image Shift : 0.00 inch Auto Side Shift : 0 dot Media Sensor : See Through Small Media Adjustment : Off Small Media Length : 1.00 inch Symbol Set : PM

[System Setup Menu] Sensor Level : 1.7 V Paper End Level : 2.80 V Error Reporting : On Printing Buzzer Select : On Metric/Inch : Inch Max Media Length : 10.00 inch Settings Lock : Off Keyboard Lock : Off Standby Mode : Off Standby Timer : 5 min Paper Near End Status : On Paper Near End Alarm : Off Control Code : STD Emulation Select : DM4 Emulation Auto Detect : Full Auto

[After Print Menu] AutoConfigure : On Function Select : Tear Cutter Action : Backfeed Paper Position : 0.00 inch Mode/Repeat Key : Disabled

2-45 CL-S6621

Operation Panel

[Interface Menu] RS-232C Baud rate : 9600 bps RS-232C Parity : None RS-232C Length : 8 bit RS-232C Stop bit : 1 bit RS-232C X-ON : Yes IEEE1284 : On USB Device Class : Printer USB VCOM Protocol : Auto USB 2.0 High Speed : On

(2) Test mode

The following test modes are available.

Operation Description Remarks

[FEED] + [POWER] Enters self print mode

[STOP] + [POWER] Enters hex dump mode

(2-1) Self print mode

You can check the printing quality by printing the self print pattern.

For label (prints 2 labels):

1. While pressing and holding the [FEED] key, turn on the power.

2. When the PRINT LED blinks slowly

(later, it will blink rapidly), release the [FEED] key. The printer enters self print mode. The label is fed, self test printing is made for two labels, and then printing stops.

3. To repeat printing, press the [FEED] key again. To exit self print mode, turn off the power.

For continuous media:

1. While pressing and holding the [FEED] key, turn on the power.

2. The PRINT LED will blink slowly. When it changes to rapid

blink, release the [FEED] key. The printer enters self print mode and self test printing is made.

3. To repeat printing, press the [FEED] key again. To exit self print mode, turn off the power.

See “

(2-1) Self

print mode”.

See “

(2-2) Hex

dump mode”.

[Print pattern in self print mode]

Media feed direction

CL-S6621 2-46

(2-2) Hex dump mode

You can print the data in the receive buffer in the hexadecimal form.

For label:

1. While pressing and holding the [STOP] key, turn on the power.

2. When the PRINT LED blinks slowly

(later, it will blink rapidly), release the [STOP] key. The printer enters hex dump mode and hex dump printing starts. To exit hex dump mode, turn off the power.

For continuous media:

1. While pressing and holding the [STOP] key, turn on the power.

2. The PRINT LED will blink slowly. When it changes to rapid

blink, release the [STOP] key. The printer enters hex dump mode and hex dump printing starts. To exit hex dump mode, turn off the power.

[Dump list example]

DUMP LIST

02 40 30 31 30 30 0D 02 60 30 30 32 30 0D 02 4C .M0100..c0020..L

44 31 31 0D 31 30 30 30 30 30 30 30 30 30 31 30 D11.100000000010

30 30 31 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 0010123456789:;<

(3) Factory/Service mode

Operation Description Remarks

All keys + [POWER] Enters factory mode and service mode

(3-1) General

Factory mode and Service mode are available for maintenance.

Factory mode:

You can change the factory-set items such as logical shift of the sensor or head, and

double heat (printing the same dot twice).

In Factory mode, DO NOT change the factory-set values unless you need it, since there are essential items related to printing accuracy, etc.

Service mode:

You can perform checks such as “head check “and “counter print” to print the total print length since the printer is firstly used.

Operation Panel

2-47 CL-S6621

Operation Panel

(3-2) How to enter the Factory/Service Mode

How to enter Factory/Service mode differs from the “user menu setup mode” operation. However, once you have entered Factory/Service mode, the basic operation is the same as that for the “user menu setup mode” explained in the User’s manual. The Factory/Service mode menu appears at the top of the user menus as follows:

All keys + POWER

Do you want to change the menu

settings? Yes=(PAUSE) No=(STOP)

[PAUSE (Yes)]

Do you want to print the current menu

s? Yes=(PAUSE) No=(STOP)

settin

To print

[PAUSE (Yes)]

: Different operation from the “user menu setup mode”

The menu operation principle is the same as for the “user menu setup mode” operation. The keys to be used and the functions are as follow:

PAU SE

Yes / Select / Save

Next digit

Exit the current menu or the VuePrint menu system

FEED

MODE/REPEAT

Top menus

Factory Mode menu

Service Mode menu

Global config menu Page Setup menu System Setup menu After Print menu Interface menu

STOP

No / Next item / Increase item

Added

VuePrint

system

CL-S6621 2-48

[Menu settings print sample in Factory/Service mode]

Machine Information

Factory Mode Settings

Through Sensor Position : 0 dot Reflect Sensor Position : 0 dot Machine Tear Position : 0 dot Machine Cut Position : 0 dot Machine Peel Position : 0 dot Machine Horizontal Pos. : 0 dots AutoCal Mode : On See Through Sensor : 0.0 V Reflect Sensor : 0.0 V SeeThrough Sensitivity : Low Reflect Sensitivity : Low Through Cal Level : 2.30 V Reflect Cal Level : 2.10 V SensNone Cal Level : 2.05 V Darkness Rate : High Double Heat Menu : Off PowerOn Head Check : On Head Check Start Pos. : Dot 1 Head Check Stop Pos. : Dot 1344 Head Error Print : No Ribbon Control : Auto Ribbon End Detection : Quick Void to TOF : Off Reverse Media Length : 0.00 inch Min Cut Length : Default Paper End Sensor : On Paper End Length : Default Parallel Error Output : On Auto Online : Off Auto Online Delay : 2 sec Top Form Sensing : On USB Serial Number : Off Auto Exec Print : On Config Print Layout : Standard Head Clean Message : Off Print Preference : Darkness

Current Menu Settings

[Global Config Menu] Config Set : 1

Operation Panel

Note:

Citizen continually enhances its printers with new options and settings based on our customer’s requests. Extra or changed menu items may appear on the print out in some cases.

Submenus for maintenance only

2-49 CL-S6621

Operation Panel

[After Print Menu] AutoConfigure : On Function Select : Tear Cutter Action : Backfeed Paper Position : 0.00 inch Mode/Repeat Key : Disabled

CL-S6621 2-50

Operation Panel

[Procedure to enter Factory/Service Mode]

1. Set media.

2. While pressing and holding all keys, turn on the power. (ALL keys + [POWER]) The printer enters Factory/Service mode. The PRINT LED and CONDITION LED light up

and the following message is printed on media.

Citizen CL-S6621 VuePrint Menu System

The four control panel buttons are used to select different options. Generally: Yes / Select / Save = PAUSE (P) key No / Next Item / Increase Item = STOP (S) key Next Digit = FEED (F) key Exit to previous menu = MODE (M) key

Do you want to reset this printer to factory settings? Yes=(PAUSE) No=(STOP)

3. Press the [STOP] key to skip to the next message. Then, the following message is printed.

Do you want to print the current menu settings? Yes=(PAUSE) No=(STOP)

4. Press the [STOP] key to skip to the next message. Then, the following message is printed.

Do you want to change the menu settings? Yes=(PAUSE) No=(STOP)

5. Press the [PAUSE] key to enter the menu settings mode. Then, the following top menu is printed.

Do you want to change “Factory Mode Menu” items?

Yes=(PAUSE) No=(STOP) Exit=(MODE)

• To enter the Factory Mode menu, proceed to the next step 6.

• To proceed to the next top menu (Service Mode menu), press the [STOP] key. See step

• To return to the previous one, press the [MODE] key.

6. Press the [PAUSE] key to enter the submenus. * The following submenus under the Factory Mode menu will be printed as you press the

[PAUSE] key repeatedly.

* For setting each item, see “

(3-3) Factory/Service Mode menu table - (a) Factory Mode menu table”, and setting example “How to change the value in the Factory Mode menu”

on page 2-

56.

Through Sensor Position +000dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Reflect Sensor Position +000dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Mach Tear Pos +000dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

(to be continued)

2-51 CL-S6621

Operation Panel

Mach Cut Pos +000dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Mach Peel Pos +000dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Mach Hor Pos +00dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

AutoCal Mode ON Save=(PAUSE) Change value=(STOP) Exit=(MODE)

SeeThrough Sensor 0.0 Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Reflect Sensor 0.0 Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

SeeThrough Sensitivity Low Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Reflect Sensitivity Low Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Darkness Rate High Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Double Heat Menu OFF Save=(PAUSE) Change value=(STOP) Exit=(MODE)

PowerOn Head Check ON Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Ribbon End Detection Quick Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Parallel Error Output ON Save=(PAUSE) Change value=(STOP) Exit=(MODE)

USB Serial Number OFF Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Auto Exec Print ON Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Config Print Layout Standard Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Print Preference Darkness Save=(PAUSE) Change value=(STOP) Exit=(MODE)

Note: In the actual printing, the cursor “^” will be printed instead of “ (underline)”.

CL-S6621 2-52

Operation Panel

7. When the Service Mode Menu message is printed as shown below, press the [PAUSE] key to enter its submenus.

* The following submenus will be printed successively as you press the [PAUSE] key

repeatedly.

* When you press the [PAUSE] key, check is done and the check result will be printed.

For performing each item, see “

(3-3) Factory/Service Mode menu table - (b) Service Mode menu table” and setting example “How to perform the check in the Service Mode

menu” on page 2-

58.

Do you want to change “Service Mode Menu” items?

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Head Check Exec

Yes=(PAUSE) No=(STOP) Exit=(MODE)

ROM Check Exec Yes=(PAUSE) No=(STOP) Exit=(MODE)

RAM Check Exec

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Print Counter Exec

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Service Counter Exec

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Cutter Counter Exec

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Do you want to change “Page Setup Menu” items?

Yes=(PAUSE) No=(STOP) Exit=(MODE)

8. To exit the Factory/Service mode, press the [MODE] key.

2-53 CL-S6621

Operation Panel

(3-3) Factory/Service Mode menu table

The following table shows the value and description of each submenu under Factory Mode menu and Service Mode menu.

(a) Factory Mode menu table

*: “+” shows that the object logically moves forward/rightward. “-“ shows that the object

logically moves backward/leftward.

**: 8 dots correspond to 1 mm for each adjustment value. (Namely, 203 dots correspond

to 1”.)

Submenu Name Adjustable Value

(Default Value) Through Sensor Position

-256 to +256 [dots] (+000

[dots]) (See Note.)

Reflect Sensor Position

-256 to +256 [dots] [dots])

(+000 (See Note.)

Mach Tear Pos -256 to +256 [dots]

[dots])

(+000

Mach Cut Pos -256 to +256 [dots]

[dots])

(+000

Mach Peel Pos -256 to +256 [dots]

[dots])

(+000

Mach Hor Pos -16 to +32 [dots]

[dots])

(+00

AutoCal Mode ON, OFF

(ON

SeeThrough Sensor

0.0 to 3.3 [V] [V])

(0.0

Reflect Sensor 0.0 to 3.3 [V]

[V])

(0.0

SeeThrough Sensitivity

Low, Medium, High

(Low

Reflect Sensitivity Low, Medium, High

(Low

Darkness Rate High, Low

(High

Double Heat Menu

ON, OFF

(OFF

Description

Logically shifts the transparent sensor position back and forth. (-32 to +32 mm, -1.26 to +1.26”)

Logically shifts the reflective sensor position back and forth. (-32 to +32 mm, -1.26 to +1.26”)

Logically shifts the tear off position back and forth. (-32 to +32 mm, -1.26 to +1.26”)

Logically shifts the cutting position back and forth. (-32 to +32 mm, -1.26 to +1.26”) (Optional)

Logically shifts the peel position back and forth. (-32 to +32 mm, -1.26 to +1.26”) (Optional)

Logically shifts the head position right and left. (-2 to +4 mm, -0.08 to +0.16”)

Automatically controls the light amount in each

)

Media sensor menu (See Through, Reflect, None).

This menu is effective when “AutoCal Mode” is set to OFF. The light amount in Media sensor menu “See Through” can be changed manually. Larger value emits larger amount of light.

This menu is effective when “AutoCal Mode” is set to OFF. The light amount in Media Sensor menu “Reflect” can be changed manually. Larger value emits larger amount of light. This menu is effective when “AutoCal Mode” is set

)

to OFF. The sensitivity of the transparent sensor can be changed in 3 levels.

This menu is effective when “AutoCal Mode” is set

)

to OFF. The sensitivity of the reflective sensor can be changed in 3 levels.

The rate for darkness increase/decrease can be

)

set.

To display the item “Double Heat Menu” in the

)

“PageSetup Menu” or not is selectable.

CL-S6621 2-54

Operation Panel

Submenu Name Adjustable Value

Description

(Default Value) PowerOn Head Check Ribbon End Detection Parallel Error Out ON, OFF

USB Serial Number

ON, OFF

(ON

) Quick, Normal, Slow (Quick

(ON

)

ON, OFF

(OFF

)

To perform the head check at power ON or not is selectable. Sets the ribbon end detection time.

To set the Fault signal to ON or not at the time of error occurrence in parallel interface is selectable. To send the serial number to the host when the USB interface is connected to the printer or not is selectable.

Auto Exec Print ON, OFF

)

(ON

Config Print Layout

Standard, Reversed

(Standard

)

To execute the Auto Exec file stored in the printer at power ON or not is selectable.

Print layout type can be selected. Standard: Prints setting items on the left and set values on the right. Reversed: Prints set values on the left and setting items on the right.

Print Preference Darkness, Speed

(Darkness

)

To put the priority on printing density or printing speed is selectable.

Note: “Through Sensor Position” adjustment and “Reflect Sensor Position” adjustment must

be done after one of the following parts is replaced.

• SA, Main PCB

• SA, Ribbon Sensor (on both front and rear sides)

2-55 CL-S6621

Operation Panel

[

]

How to change the value in the Factory Mode menu

For example, the following shows how to logically move the thermal head position 1 mm (0.04”) toward the right side. In this case, you should add 8 (dots) to the current value (e.g. +08).

• Variable range: -16 to +32 dots (default +00 dot) (-2 to +4 mm, -0.08 to +0.16”)

• 8 dots correspond to 1 mm. (203 dots correspond to 1”.)

1 mm

Head

1. Perform steps 1-6 on page 2-

Front

51 to enter the Factory Mode menu. See “(3-2) How to enter

the Factory/Service Mode”.

2. Press the [PAUSE] key until “Mach Hor Pos” submenu is printed.

Do you want to change “Factory Mode Menu” items?

Y es=(PAUSE) No=(STOP) Exit=(MODE) Through Sensor Position +000dos S ave=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE) : : Mach Hor Pos +00dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

Note: In the actual printing, the cursor “^” will be printed instead of “ (underline)”.

3. To set the value to 16 (0 plus 16), press the [FEED] key to move the cursor to the next digit (+00), and then press the [STOP] key once to specify “1”.

Each time you press the [STOP] key, the value of the current digit with the cursor will scroll

(0, 1, 2, 3, 4, ...., 9, 0).

4. Next, press the [FEED] key to move the cursor to the next digit (+10).

The changed value is printed.

Mach Hor Pos +10dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

5. Press the [STOP] key 6 times to specify “6”.

Each time you press the key, the value will scroll (8, 9, 0, 1, ...., 6).

6. To save the set value, press the [PAUSE] key.

The set value will be printed. Be sure that the new value is “16”, and then press the

[MODE] key to exit the item.

* If the value is not the one you expected, repeat above operation.

Mach Hor Pos +16dots Save=(PAUSE) Next Digit=(FEED) Change value=(STOP) Exit=(MODE)

CL-S6621 2-56

(b) Service Mode menu table

Submenu Name Value Description

Head Check None [PAUSE]: Checks the number of defective

thermal elements and prints it. If no defective thermal element is found, “0” will be printed. Example: Bad head element: 0 dot(s) [STOP]: Nothing is printed.

ROM Check None [PAUSE]: Performs ROM checksum test, and

prints the check result (OK or NG) and the checksum value. Example: PROGRM ROM OK 4F4E [STOP]: Nothing is printed.

RAM Check None [PAUSE]: Performs RAM capacity check and

prints the check result. Example: RAM OK 32768K [STOP]: Nothing is printed.

Print Counter None [PAUSE]: Prints the total printed length

accumulated from when the printer is firstly used. Example: Length 1234.5Km [STOP]: Nothing is printed.

Service Counter None [PAUSE]: Prints the service counter length in

Km accumulated from when it was reset last time. Example: Length 0123.4Km

Clear Service Counter ? Yes=(PAUSE) No=(STOP)

To clear the service counter, press the

[PAUSE] key again. To quit, press the [STOP] key.

[STOP]: Nothing is printed.

Cut Counter None [PAUSE]: Prints the cut counter value

accumulated from when it was reset last time. Example: Count 10

Clear Cut Counter ? Yes=(PAUSE) No=(STOP)

To clear the cut counter, press the

[PAUSE] key again. To quit, press the [STOP] key.

[STOP]: Nothing is printed.

Operation Panel

2-57 CL-S6621

Operation Panel

1How to perform the check in the Service Mode menu

For example, the following shows how to perform the head check.

1. Perform steps 1-7 on pages 2-

51 to 2-53 to enter the Service Mode menu. See “(3-2) How

to enter the Factory/Service Mode”.

2. Press the [PAUSE] key until “Head Check” submenu is printed.

Do you want to change “Service Mode Menu” items?

Yes=(PAUSE) No=(STOP) Exit=(MODE)

Head Check Exec Yes=(PAUSE) No=(STOP) Exit=(MODE)

3. Press the [PAUSE] key to check for head abnormality.

The number of faulty thermal elements is printed. Example: Bad head element: 0 dot(s) After printing the check result, the next submenu is automatically printed.

If you press the [STOP] key, nothing is printed.

CL-S6621 2-58

2-4. Interface

2-4-1. Serial Interface

(1) Specifications

System Start/stop asynchronous full duplex communication Signal level RS-232C

Baud rate 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps

Data length 7 bits, 8 bits Stop bit 1 bit, 2 bits

Parity Odd, even, none

Connector D-SUB 25PIN 225AE25FSNBBA3(COXOC)

(2) Signal line and pin assignment

Pin No. Signal

Abbr. 1 FG Protective ground Protective grounding

2 TXD Transmit Data Signal line that transmits data from the printer

3 RXD Receive data Signal line that transmits data from the host to

4 RTS Transmission request Signal line that becomes active when the

5 CTS Able to transfer data Signal line that becomes active when other

6 DSR Data Set Ready Signal line that is active when the host can

7 SGND Signal ground Signal grounding line

8-13 NC ------ Not used

14 VCC +3.3V (Factory use only )

15-19 NC ------ Not used

20 DTR Data Terminal

21-25 NC ------ Not used

Signal name Function

to the host

the printer

printer can receive data

devices can receive data from the printer

interface with the printer

Signal line that is active when the printer can

Ready

interface with the host

Interface

2-59 CL-S6621

Interface

(3) Protocol

XON/XOFF system:

Controlled with the data transmission request signal X-ON (11H) code and the data transmission stop request signal X-OFF (13H) code.

The conditions for the X-ON code output are as follows:

• When the printer is turned from off-line to on-line.

• When the remaining of receive buffer is 1024 bytes or more after sending X-OFF code.

The conditions for the X-OFF code output are as follows:

• When the remainder of receive buffer is 128 bytes or less.

• When the printer is turned from on-line to off-line. When the media end is detected. When a printer error occurs.

0 16K

16K bytes

Received data

1024 bytes

X-ON code sending

128 bytes

X-OFF code sending

READY/BUSY System:

DTR signal is controlled with READY ("High")/BUSY ("Low") level.

DTR turns to "High (Ready)" in the following conditions:

• When the printer is in on-line mode, and

• When the remaining buffer is 128 bytes or more. (After DTR becomes "High", DTR retains "High" until the remaining buffer becomes 1024 bytes or less.)

DTR turns to "Low (Busy)" in the following conditions:

• When the printer is in off-line mode.

• When the remaining buffer is less than 128 bytes. (After DTR becomes "Low", DTR retains "Low" until the remaining buffer becomes 1024 bytes or more.)

CL-S6621 2-60

2-4-2. USB Interface

(1) Specifications

Standards Complies with Universal Serial Bus Specification 2.0 Transmission speed Compatible with 480Mbps (high speed) transmission Receive buffer 16K bytes

Connector 15120-00410 (KST)

(2) Signal line and pin arrangement

Pin No. Signal code Signal Function

1 VBUS USB power USB power (+5V)

2 D+ Signal line + + signal line

3 D- Signal line - - signal line 4 GND GND GND

Interface

2-4-3. Parallel Interface (Option)

(1) Specifications

Transmission system 8-bit parallel data Receive buffer size 16K bytes

Transmission modes Compatible mode

It is an asynchronous forward channel mode to send the byte width data from the host to the printer. The interface line of the data is operated in accordance with signal line definitions of Centronics.

NIBBLE mode

It is an asynchronous reverse channel mode to send the data from the printer to the host. In Nibble mode, 4-bit data (half byte) is sent at a time using the 4 status lines (FAULT, SELECT, PE, and BUSY). To send one complete byte data, the printer sends 2 nibbles (8 bits in total) to the host. Nibble mode is usually combined with Compatible mode to create a complete bi-directional channel.

ECP mode

ECP mode permits bi-directional asynchronous data transmission, and by means of interlock handshake, it does not require the timing necessary with Compatible mode.

Signal level IEEE1284 compatible

2-61 CL-S6621

Interface

(2) Signal line and pin assignment

Pin No. Signal name I/O Function in Compatible Mode

1 STROBE Input Strobe signal to read in 8-bit data

2-9 DATA0-7 Input 8-bit parallel signal

10 ACKNLG Output 8-bit data request signal

11 BUSY Output Signal specifying printer busy 12 PERROR Output Signal specifying media end

13 SELECT Output Signal specifying if the printer is on-line (printing enabled)

or off-line

14 AUTOFD Input Invalid (ignored)

15 NC --- Not used 16 SGND --- Signal ground

17 FGND --- Frame ground

18 P.L.H Output Peripheral logic high (pulled up to +5V at 1KΩ)

19-30 GND --- Ground for twisted pair return

31 PRIME Input Printer reset

32 FAULT Output Signal specifying printer error 33 GND --- Signal ground

34 NC --- Not used

35 NC --- Not used

36 SELECTIN Input Invalid (ignored)

(3) Parallel port status signals when an error occurs

The following table shows the status signal change when an error occurs. Under the specifications for this bi-directional parallel interface, the parallel port status signals when an error occurs are, as shown below, partially processed differently than with Compatible mode used up till now. When bi-directional parallel interface is on in the setting menu, even if a printer error has occurred, the BUSY signal line is not active ("H").

Error Compatible mode

Paper end Busy:

PError: Select: Fault:

L → H L → H H → L H → L

Error other than paper end

• Head open

• Other

Busy: PError: Select: Fault:

L → H L→ unchanged H → L H → L

Conditions for Busy • Receive buffer full

• Data being read

• Error

CL-S6621 2-62

(4) Compatible timing specification

[When power is on] (Timing to go on-line)

Power On

Reset

BUSY

ACK

SELECT

[While receiving data]

Data0~7

Strobe

BUSY

0.5µs

Note: BUSY goes “High” at the falling edge of Strobe, and data is latched at the leading edge

of Strobe.

Interface

2-63 CL-S6621

Interface

[While receiving PRIME signal]

10~15µsec or more

PRIME

BUSY

Ack

Fault

SELECT

Note: If the PRIME signal width is 10 µsec or less, it is not accepted.

BUSY goes to “High” when the PRIME signal is accepted by the printer.

[Timing relationship between BUSY and ACK]

Center

BUSY

ACK

About 2 µsec

CL-S6621 2-64

CHAPTER 3

DISASSEMBLY AND MAINTENANCE

3-1 CL-S6621

CHAPTER 3 DISASSEMBLY AND MAINTENANCE

3-1. Maintenance Precautions ............................................................................................... 3-4

3-2. Cleaning..........................................................................................................................3-5

3-3. Lubrication ......................................................................................................................3-5

3-3-1. Lubrication frequency......................................................................................... 3-5

3-3-2. Types of lubricant............................................................................................... 3-5

3-3-3. Quantity of lubricant ...........................................................................................3-5

3-3-4. Adhesive ............................................................................................................ 3-5

3-4. Maintenance Tools List ...................................................................................................3-6

3-5. Quick Detachment of Major Parts................................................................................... 3-7

3-5-1. SA, Head ............................................................................................................ 3-7

3-5-2. SA2 Platen .........................................................................................................3-8

3-6. Disassembly, Reassembly and Lubrication ....................................................................3-9

3-6-1. “Cover Top” and “Support Top Cover” ................................................................ 3-10

(1) Removing the “Cover Top” Block ...............................................................3-10

(2) Removing the “Cover Top” and “Support Top Cover” ................................ 3-11

3-6-2. Unit, Ribbon ....................................................................................................... 3-12

3-6-3. Case U ...............................................................................................................3-14

(1) Removing the “Case U” Block ................................................................... 3-14

(2) Removing the “Case U” ............................................................................. 3-17

3-6-4. SA, Fan ..............................................................................................................3-18

(1) Removing the ribbon covers...................................................................... 3-18

(2) Removing the “SA, Fan” ............................................................................ 3-18

3-6-5. Ribbon Gears ..................................................................................................... 3-19

3-6-6. “SA Ribbon Motor F/R” and “SA, Ribbon PCB”.................................................. 3-21

3-6-7. “Holder, Ribbon Shaft” and “Holder 2 Tension Spring” .......................................3-22

3-6-8. “Unit, Ribbon Sensor F/R” and “SA Ribbon Frame” ...........................................3-23

3-6-9. “SA, Ribbon Tension Shaft F” and “SA, Ribbon Sensor” on the front side .........3-25

3-6-10. “SA, Ribbon Tension Shaft R” and “SA, Tension Sensor” on the rear side ........ 3-26

3-6-11. “Unit, Control Panel”, “SA PNE Sensor”, “SA, Relay PCB” and

“SA, Main PCB” ............................................................................................................. 3-

(1) Unit, Control Panel ....................................................................................3-27

(2) SA PNE Sensor .........................................................................................3-27

(3) “SA, Relay PCB” and “SA, Main PCB” ......................................................3-28

3-6-12. SA, Opepane PCB ............................................................................................. 3-30

3-6-13. “Unit, Mechanism”, “Unit, Power Supply” and “Case L” .....................................3-31

(1) Unit, Mechanism........................................................................................ 3-31

(2) Unit, Power Supply.................................................................................... 3-32

(3) Case L .......................................................................................................3-34

3-6-14. SA2 Platen ......................................................................................................... 3-35

3-6-15. Unit, Sensor U.................................................................................................... 3-36

3-6-16. “SA TRA Sen PCB” and “Gear Bevel Lead Screw U”......................................... 3-38

3-6-17. Unit, Head .......................................................................................................... 3-41

CL-S6621 3-2

3-6-18. “SA, Head”, “Cam Head Balance” and “Cam Head Adjust”................................3-42

(1) SA, Head ...................................................................................................3-42

(2) Cam Head Balance ...................................................................................3-43

(3) Cam Head Adjust....................................................................................... 3-45

3-6-19. SA PF Motor....................................................................................................... 3-47

3-6-20. “Carriage Adjust Sensor L”, “SA, Head Up Switch” and “SA Ref Sen PCB”....... 3-47

(1) “Carriage Adjust Sensor L” and “SA, Head Up Switch” .............................3-47

(2) SA Ref Sen PCB........................................................................................ 3-50

3-6-21. Gears .................................................................................................................3-51

3-6-22. “Lever Head Lock” and “SA Main Frame R”....................................................... 3-52

3-6-23. “Frame Main”, “SA Main Frame L” and “Plate Peel Guide” ................................ 3-53

3-6-24. Disassembling the “Roll Paper Shaft” ................................................................ 3-54

3-7. Adjustments.................................................................................................................... 3-55

3-7-1. Transparent/Reflective Sensor Position Adjustment ..........................................3-55

(1) Sensor position adjustment (factory mode)............................................... 3-55

(2) Sensor sensitivity adjustment (maintenance mode) .................................. 3-55

3-7-2. Ribbon Slant Elimination Adjustment ................................................................. 3-60

(1) Ribbon slant elimination adjustment.......................................................... 3-60

3-3

CL-S6621

Maintenance Precautions

3-1. Maintenance Precautions

• Before starting disassembly/reassembly or mechanical adjustment, be sure to disconnect the power cord from the power source.

• Do not disassemble/reassemble or adjust the machine, if it functions properly.

Particularly, do not loosen screws on any component, unless necessary.

• After completing an inspection and before turning on the power, be sure to check that there is no abnormality.

• Never try to print without media.

• Check that the media is properly set.

• Do not lay anything on the cover or lean against it during maintenance or while the

printer is in operation.

• During maintenance, be careful not to leave parts or screws unattached or loose inside the printer.

• Do not put the printed circuit boards directly on the printer or on the floor.

• When disassembling or reassembling, check wires for any damage and do not pinch

or damage them. Also, run wires as they were.

Warning

Caution

CL-S6621 3-4

Cleaning, Lubrication

3-2. Cleaning

Cleaning spots are listed below.

Cleaning Position Description

Cabinet Wipe soiled parts of the printer with a clean dry cloth. Remove bits

of media, etc., using tweezers. Note: When cleaning, be careful not to scratch the equipment or to

bend parts, etc. SA, Head Clean the thermal head with the head cleaner only.

SA2 Platen Clean the platen with a soft cloth.

Media running surface Wipe off media refuse, etc., on and around the media running

surface including the “SA2 Platen”.

Clean inside the printer in accordance with the following:

• Cleaning frequency: Every 6 months or 300 hours of operation. (Whichever comes first)

• Materials: Dry cloth (gauze or soft cloth) and thermal head cleaner

3-3. Lubrication

3-3-1. Lubrication frequency

This is a maintenance-free machine and requires no lubrication under normal use. However, the machine should be lubricated whenever it is disassembled and reassembled, or when lubricated parts are cleaned. The parts to be lubricated are indicated in the disassemble procedure with the mark .

3-3-2. Types of lubricant

• Floil G-311S (by Kanto Chemical Co., Ltd.)

• Floil G-474C (by Kanto Chemical Co., Ltd.)

3-3-3. Quantity of lubricant

Small quantity..........  ............. About 1 drop.

Ordinary quantity ....  ......... About 3 to 4 drops.

About 0.2 mm thick for grease.

Large quantity..........  ....... Apply sufficiently.

3-3-4. Adhesive

• LOCTITE263 (by Henkel AG & Co. KGaA)

3-5 CL-S6621

Maintenance Tools List

3-4. Maintenance Tools List

Maintenance tools shown below are needed when replacing the maintenance parts such as the “SA, Main PCB”, “SA PF Motor”, etc.

Maintenance Tools List

No. Name Q'ty Description Remarks

1 Phillips Screwdriver

(Length 200 mm)

2 Phillips Screwdriver

(Length 100 mm)

3 Flat-blade Screwdriver

(Length 100 mm)

4 Nut driver 1

1 Bit: #0, #1, #2

1 4.3 mm width

4 mm

5 Tweezers 1

6 Round Nose Pliers 1

7 Cutting Nippers 1 8 Soldering Iron (30W) 1

9 Volt-ohm Meter 1

CL-S6621 3-6

Quick Detachment of Major Parts

3-5. Quick Detachment of Major Parts

How to quickly detach the following major parts separately is explained here.

• SA, Head

• SA2 Platen

3-5-1. SA, Head

• When detaching or reinstalling the "SA, Head", be careful not to damage the thermal elements. Especially, avoid contacting the thermal elements with a metal part, etc.

Do not touch the thermal elements of the “SA, Head” with your bare hand.

1. Open the “Cover Top” Block.

2. Push the “Lever Head Lock” () and open the Ribbon & Head Block ().

3. Remove the 2 screws (NO.1, TFH (6-0.7), M3.0x6 (NI)) () and detach the “SA, Head” ().

4. Disconnect the 2 connectors ( and ) from the “SA, Head”. NOTE: To disconnect the connector (), unlock the connector lock.

Ribbon & Head Block

Caution

"Cover Top" Block

SA, Head

Notes on reassembling:

• The Ribbon & Head Block has two bosses that allow easy positioning of the “SA, Head”. When

assembling the “SA, Head”, be sure that it is securely engaged with the Ribbon & Head Block.

• Insert the connectors firmly.

Lever Head Lock

NO.1, TFH (6-0.7), M3.0x6 (NI)

3-7 CL-S6621

Quick Detachment of Major Parts

3-5-2. SA2 Platen

1. Open the “Cover Top” and then the ribbon & head Block.

2. While pressing the part “A” of the “SA2 Platen”, lift the right end of the “SA2 Platen” a little. (See the arrow “a”.) Next, move it to the right and then remove it from the printer by lifting it upwardly. (See the arrow “b”.)

 

  

 

Note on reassembling:

• After reassembling the “SA2 Platen”, be sure that it is securely engaged with the main body.

)

CL-S6621 3-8

Disassembly, Reassembly and Lubrication

3-6. Disassembly, Reassembly and Lubrication

[Disassembly Flowchart for Major Parts]

CL-S6621

SA, Head

SA2 Platen

Cover Top

Unit, Ribbon

Case U

Cover Main PCB

Unit, Mechanism

Roll Paper Shaft

(See 3-5-1.)

(See 3-5-2.)

(See 3-6-1.)

(See 3-6-2.)

(See 3-6-3.)

SA, Opepane PCB

SA PNE Sensor

Unit, Power Supply

(See 3-6-11(3).)

SA, Relay PCB

SA, Main PCB

(See 3-6-13(1).)

Unit, Power Supply Case L

(See 3-6-13(2).)

SA2 Platen

Unit, Sensor U SA TRA Sen PCB

(See 3-6-15.)

Unit, Head SA, Head

(See 3-6-17.)

SA PF Motor

(See 3-6-19.)

(See 3-6-11(2).)

(See 3-6-11(3).)

(See 3-6-14.)

(See 3-6-24.)

SA, Fan

Ribbon Gears

SA Ribbon Motor F

SA Ribbon Motor R

SA, Ribbon PCB

SA, Ribbon Sensor

(See 3-6-12.)

(See 3-6-13(2).)

SA, Head Up Switch

SA Ref Sen PCB

(See 3-6-4.)

(See 3-6-5.)

(See 3-6-6.)

(See 3-6-9/10.)

(See 3-6-13(3).)

(See 3-6-16.)

(See 3-6-18.)

(See 3-6-20(1).)

(See 3-6-20(2).)

3-9 CL-S6621

Disassembly, Reassembly and Lubrication





3-6-1. “Cover Top” and “Support Top Cover”

(1) Removing the “Cover Top” Block

1. Before starting, remove the “SA, Ribbon Holder” (2 pcs.) from the printer.

2. Open the “Cover Top” Block half way as shown in the figure. (Do not fully open it.)

3. Insert a flat-blade screwdriver into the right side corner of the “Cover Top” Block as shown, then push the “Plate A” outward with the screwdriver end. (The projections of the “Cover Top” Block come off the main body.) Then, remove the “Cover Top” Block. (At this moment, a sound may be heard to some degree.)

  

 

 

 

Note on reassembling:

• First, with the opening angle of the “Cover Top” Block set as shown, insert the protrusion “B” on the left side of the “Cover Top” Block into the hole in the main body.

Next, align the protrusion “C” with the hole “C’ ”, and, while pushing the “Plate A” outward

again with the flat-bladed screwdriver, insert the right side corner of the “Cover Top” Block into the main body.



 

CL-S6621 3-10

Disassembly, Reassembly and Lubrication

(2) Removing the “Cover Top” and “Support Top Cover”

The “Cover Top” Block forms a double structure where the outer cover is the “Cover Top” and the inner cover is the “Support Top Cover”.

1. Remove the 4 screws (PHT (PT2T), M3x14) and pull out the left side

of the “Support Top

Cover” until it stops. (It hits the stopper “A” and stops.)

2. Bend the “Support Top Cover” inward to keep away from the stopper “A”.

3. Pull out the right side

of the “Support Top Cover” until it stops. (It hits the stoppers “B” and

stops.)

4. Bend the “Support Top Cover” inward to keep away from the stoppers “B”, and then remove the “Support Top Cover” upwardly.

5. Remove the “Label, Main Guidance” and “Label Caution Cover Open” from the “Support Top Cover”.

6. Remove the “Window” and “Window Side” (2 pcs.) from the “Cover Top”. NOTE: When removing the “Window Side”, first, remove the 2 claws “C”, and then “D”.

7. Remove the “Label CL-S6621” and “Logo Citizen L” from the “Cover Top”.

PHT (PT2T), M3x14

Label Caution Cover Open

Label, Main Guidance

PHT (PT2T), M3x14

Window

Support Top Cover

Logo Citizen L

Window Side

Cover Top

Label CL-S6621

Window Side

Notes on reassembling:

• Place the “Window” so that 3 bosses of the “Cover Top” are inserted into respective holes in the “Window”.

• When assembling the “Window Side” on the “Cover Top”, first hook the claws “C” and then the claw “D”.

3-11 CL-S6621

Disassembly, Reassembly and Lubrication

3-6-2. Unit, Ribbon

• Forbidden screws in the “Unit, Ribbon” DO NOT loosen the 10 screws of the “SA Ribbon Frame”. The “SA Ribbon Frame” consists of three parts and is assembled with the 10 screws. Once the “SA Ribbon Frame” is disassembled, correct ribbon running cannot be assured. Therefore, a ribbon wrinkle may not be removed with the Ribbon Left-Right Balance Adjustment Knobs (Front/Rear), as expected.

Unit, Ribbon

Caution

SA Ribbon Frame

5 screws

DO NOT LOOSEN

5 screws

DO NOT LOOSEN

Ribbon Left-Right Balance Adjustment Knobs (Front/Rear)

CL-S6621 3-12

Disassembly, Reassembly and Lubrication

1. Remove the “Cover Top” Block. Refer to “3-6-1(1) Removing the “Cover Top” Block“.

2. Remove the 4 screws (BH, M3x4 (NI)) and detach the “Unit, Ribbon” by lifting it upwardly. At this time, disconnect 1 connector (J102) from the “Unit, Ribbon”.

Unit, Ribbon

BH, M3x4 (NI)

J102

Notes on reassembling:

• Seat the cable (J102) on the “Plate Ribbon Cable Stay” as shown below.

• When assembling the “Unit, Ribbon”, be sure that it is securely seated on the main body. The 2 protrusions on the bottom of the “Unit, Ribbon” are naturally inserted in the respective holes “A” of the main body for positioning the “Unit, Ribbon”.

Plate Ribbon Cable Stay

J102

3-13 CL-S6621

Disassembly, Reassembly and Lubrication

3-6-3. Case U

(1) Removing the “Case U” Block

1. Remove the “Cover Top” Block. Refer to “3-6-1(1) Removing the “Cover Top” Block“.

2. Remove the “Unit, Ribbon”. Refer to “

3. Remove the 1 screw (BH, M3x4 (NI)) and detach the “Cover Cable”.

4. When an optional peeler or cutter is installed, remove the 1 screw (PHT (PT2T), M3x14) and detach the “Cover Connector”.

5. Open the Head Block by pressing the “Lever Head Lock”. NOTE: This step is required as the “Knob Guide Paper U” extends beyond the “Case U”

Block.

6. Lift the “Case U” Block to the half-way height, and while lowering the Head Block a little, remove the “Case U” upwardly. NOTE: As the front edge of the “Case U” Block is directly beneath the stopper part” (5

pcs.) of the “Leaf Case U”, avoid these stopper part when lifting the “Case U” Block”.

7. After removing the “Case U” Block, detach the “Leaf Case U” upwardly

PHT (PT2T), M3x14

BH, M3x4 (NI)

Cover Connector

Cover Cable

Hook

Head Block

3-6-2 Unit, Ribbon”.

Stopper part (5 pcs.)

Lever Head Lock

Leaf Case U

PHT (PT2T), M3x14

"Case U" Block

Knob Guide Paper U

CL-S6621 3-14

Disassembly, Reassembly and Lubrication

Notes on reassembling:

• When assembling the “Case U” Block, do not forget to open the Head Block and the “Knob Guide Paper U”. Otherwise, the extended “Knob Guide Paper U” gets caught between the “Case U” Block and the main body.

• After assembling the “Case U” Block, install the “Leaf Case U” as follows.

NOTE: While inserting the “Leaf Case U” (thin metal), carefully handle it so as not to

deform it.

1) While aligning both edges of the “Leaf Case U” with those of the part “A” (a part of the “Case L”), insert the “Leaf Case U” into the main body (between the part “A” and the “Case U” Block) until the ends of claws (4 pcs.) securely fit to the grooves (4 pcs.) on the “Case U” Block. NOTE: Do not insert it downward too much, as its stoppers will be bent.

2) To be sure if the “Leaf Case U” is securely inserted, move it a little. If the claws of the “Leaf Case U” are securely engaged with the grooves of the “Case U” Block, the “Leaf Case U” does not move.

Leaf Case U

Stopper part (5 pcs.)

Claw

Stopper part

Claw (4 pcs.)

Groove (4 pcs.)

("Case U" Block)

"A"

(Case L)

• Assemble the “Cover Cable” so that the hook of the main body is correctly inserted into the rectangle hole of the “Cover Cable” as shown in the magnified view.

(to be continued on the next page)

3-15 CL-S6621

Disassembly, Reassembly and Lubrication

• When once the “Unit, Mechanism” was removed (Paper path adjustment):

When once the “Unit, Mechanism” was removed in “

3-6-13(1) Unit, Mechanism”, you need

to perform the following paper path adjustment after reassembling the “Case U” Block.

NOTE: If you haven’t removed the “Unit, Mechanism”, you don’t need to perform this

adjustment.

This procedure is to align the position of the “Unit, Mechanism” with the “Case U” Block. So,

you need to shift the “Unit, Mechanism” a little after loosening its screws

1) Before starting, be sure that the “Case U” Block is already assembled in the printer.

2) Loosen (do not remove) 8 screws that fasten the “Unit, Mechanism” to the printer.

3) Open the “SA, Head” Block.

4) Open the “Unit, Sensor U”.

5) Set a ruler along the 5 places (2 places (,) of the “Unit, Mechanism” and 3 places (,,) of the “Case U” Block.

6) Move the “Unit, Mechanism” so that 5 places are aligned in line.

7) Close the “Unit, Sensor U” and “SA, Head” Block, and then fasten the 8 screws to fix the “Unit, Mechanism”.

8 screws

"SA, Head" Block

Unit, Sensor U

CL-S6621 3-16

Disassembly, Reassembly and Lubrication

(2) Removing the “Case U”

1. Remove the “Case U” Block. Refer to the above “(1) Removing the “Case U” Block”

2. Remove the “Cover Front” upwardly.

3. Remove the 1 screw (PHT (PT2T), M3x14) and detach the “Cover Connector”.

4. Remove the 1 screw (PH, M5x15 (NI)) and 1 nut ((#3), M5 (NI)), and detach the “Damper Cover”.

5. Remove labels (“Label Rating” and “Label Caution”) from the “Case U”.

PHT (PT2T), M3x14

Cover Connector

PH, M5x15 (NI)

Damper Cover

(#3), M5 (NI)

Label Caution

Cover Front

Label Rating

Case U

Note on reassembling

• When assembling the “Damper Cover”, tighten the screw while pushing down the “Damper Cover”.

3-17 CL-S6621

Disassembly, Reassembly and Lubrication

3-6-4. SA, Fan

(1) Removing the ribbon covers

1. Open the “Cover Top” Block and remove the “Unit, Ribbon”. Refer to “3-6-2 Unit, Ribbon”.

2. On the right, remove the 2 screws (BH, M3x4 (NI)) and detach the “Cover Ribbon Frame R”.

3. On the left, remove the 2 screws (BH, M3x4 (NI)) and detach the “SA2, Ribbon Unit Fan” to the left after lifting it to unhook the claws “A” from the chassis.

  

Note on reassembling:

• When assembling the “Cover Ribbon Frame R”, pass the wires of the front side cable through the opening “B” (not “C”).

(2) Removing the “SA, Fan”

1. Remove the 4 screws (PHT (#2), M3x6) and 4 washers (Plain, 3x8x0.5), and detach the “Bracket Ribbon Fan” (2 pcs.).

2. Remove the “SA, Fan” from the “Cover Ribbon Frame L”.

   

)



Cover Ribbon Frame L

SA, Fan

Bracket Ribbon Fan

J106

   ! 

Plain, 3x8x0.5

PHT (#2), M3x6

  

CL-S6621 3-18

Disassembly, Reassembly and Lubrication

Note on reassembling:

• When assembling the “SA, Fan”, pass the cable between the boss and the frame as shown on the right. (Wind the cable on the boss counterclockwise.)

Boss

J106

3-6-5. Ribbon Gears

1. Open the “Cover Top” Block and remove the “Unit, Ribbon”. Refer to “3-6-2 Unit, Ribbon”.

2. Remove the ribbon covers. Refer to “

3. On the front side, remove the 1 screw (No.0PH (4-0.3)M2x3 (NI)) () and “Plate Ribbon

Washer”. Then, remove the “SA, Holder R Shaft”, “Spring Ribbon Shaft”, “Spring Ribbon Return” and “Gear Ribbon Shaft F” in that order.

4. Also on the front side, disengage the “Polyslider, Knob-2” and remove the “Gear Reduction

Ribbon 2” (), “Gear Reduction Ribbon 1” (), “Gear Reduction Ribbon 3” (), and “Gear Idle Ribbon” () in that order.

5. On the rear side, remove the 1 screw (No.0PH (4-0.3)M2x3 (NI)) () and “Plate Ribbon

Washer”. Then, remove the “SA, Holder R Shaft”, “Spring Ribbon Shaft”, “Spring Ribbon Return” and “Gear Ribbon Shaft R” in that order.

6. Also on the rear side, disengage the “Polyslider, Knob-2” and remove the “Gear Reduction

Ribbon 2” (), “Gear Reduction Ribbon 1” (), “Gear Reduction Ribbon 3” (), and “Gear Idle Ribbon” () in that order.

[Magnified View]

FLOIL G-474C

Gear Reduction Ribbon 1

Gear Idle Ribbon

Gear Reduction Ribbon 3

Polyslider, Knob-02

Gear Reduction Ribbon 2

3-6-4(1) Removing the ribbon covers”.

Gear Ribbon Shaft R

Gear Reduction Ribbon 2

Polyslider, Knob-02

Gear Ribbon Shaft F

Spring Ribbon Return

Spring Ribbon Shaft

SA, Holder R Shaft

Plate Ribbon Washer

No.0PH (4-0.3)M2x3 (NI)

Gear Reduction Ribbon 3

Gear Idle Ribbon

Gear Reduction Ribbon 1

Spring Ribbon Return

Spring Ribbon Shaft

SA, Holder R Shaft

Plate Ribbon Washer

No.0PH (4-0.3)M2x3 (NI)

3-19 CL-S6621

Disassembly, Reassembly and Lubrication

Notes on reassembling:

• Distinguish the “Gear Ribbon Shaft F” from the “Gear Ribbon Shaft R”, referring to the following projection.

Gear Ribbon Shaft F

Projection

Gear Ribbon Shaft R

• On the front side, assemble the “SA, Holder R Shaft”, “Spring Ribbon Shaft”, and “Spring Ribbon Return” on the “Gear Ribbon Shaft F”. Apply FLOIL G-311S to both ends of the “Spring Ribbon Shaft”. Refer to the

 marks shown in

the left figure below.

• On the rear side, assemble the “SA, Holder R Shaft”, “Spring Ribbon Shaft”, and “Spring Ribbon Return” on the “Gear Ribbon Shaft R”. Apply FLOIL G-311S to both ends of the “Spring Ribbon Shaft”. Refer to the

 marks shown in

the right figure below.

[Front side] [Rear side]

Gear Ribbon Shaft F

Spring Ribbon Return

Gear Ribbon Shaft R

Spring Ribbon Return

SA, Holder R Shaft

Spring Ribbon Shaft

FLOIL G-311S

• Apply FLOIL G-474C to the parts (gears and shafts) shown by the

 marks. (Refer to the figure

on the previous page.)

CL-S6621 3-20

Disassembly, Reassembly and Lubrication

3-6-6. “SA Ribbon Motor F/R” and “SA, Ribbon PCB”

1. Open the “Cover Top” Block and remove the “Unit, Ribbon”. Refer to “3-6-2 Unit, Ribbon”.

2. Remove the ribbon covers. Refer to “

3. Disconnect 2 connectors (J101 and J107) from the “SA, Ribbon PCB”.

4. On the front side, remove the 2 screws (BH, M3x4 (NI)) and detach the “SA Ribbon Motor F”.

5. Disconnect 1 connector (J103) from the “SA, Ribbon PCB”.

6. On the rear side, remove the 2 screws (BH, M3x4 (NI)) and detach the “SA Ribbon Motor R”.

7. Remove the 2 screws (BH, M3x4 (NI)), and detach the “SA, Ribbon PCB”.

BH, M3x4 (NI)

3-6-4(1) Removing the ribbon covers”.

BH, M3x4 (NI)

SA Ribbon Motor R

J103

SA, Ribbon PCB

BH, M3x4 (NI)

SA Ribbon Motor F

J107

J101

Note on reassembling:

• Correctly connect each connector.

To SA, Fan

To SA Ribbon Motor R

To SA, Ribbon Sensor (on the rear side)

J106

J103

J105

J101

SA, Ribbon PCB

J104

To SA Ribbon Motor F

To SA Ribbon Motor F (for thermistor)

J107

J104

J102

To SA, Main PCB

J105

To SA, Ribbon Sensor (on the front side)

3-21 CL-S6621

Disassembly, Reassembly and Lubrication

)

3-6-7. “Holder, Ribbon Shaft” and “Holder 2 Tension Spring”

1. Open the “Cover Top” Block .

2. Release the lock by moving the part “A” toward the right and remove the “Holder, Ribbon

Shaft” (2 pcs.) toward the front.

3. Remove the 2 screws (PHT (#2), M3x6) and detach the “Holder 2 Tension Spring”.

Holder 2 Tension Spring

Holder, Ribbon Shaft

PHT (#2), M3x6

Holder, Ribbon Shaft

CL-S6621 3-22

Citizen CL-S6621 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Precautions

TABLE OF CONTENTS

1-1. General Specifications

1-2. Printable Area

1-3. Printing Position Accuracy

1-4. Adjustable Sensors

TABLE OF CONTENTS

2-1. Operation of Each Mechanism

2-1-1. Locations and Functions of Motors, Sensors and Thermal Head

(1) “Unit, Ribbon” section

(2) Printing section

2-1-2. Media Feed Mechanism

2-1-3. Label/Tag Detection Mechanism

2-1-4. Printing and Ribbon Feed Mechanism

2-1-5. Print Head Up/Down Detection Mechanism

2-1-6. Paper Near End Detection Mechanism

2-1-7. Head Balance Adjustment Mechanism

2-1-8. Media Offset Adjustment Mechanism

2-1-9. Transparent/Reflective Sensor Travelling Mechanism

2-2. Operation of Control Parts

2-2-1. Configuration of Printer

(1) AC power supply

(2) SA, Main PCB

(3) Operation panel (SA, Opepane PCB)

(4) Thermal print head (SA, Head)

(5) Sensors

(6) Motors

(7) SA, Ribbon PCB

(8) SA, Relay PCB

(9) Optional I/F

2-2-2. Memory map

2-2-3. Sensors

(1) Head up switch

(2) Transparent sensor and reflective sensor

(3) Ribbon Sensor F/R

(4) Head temperature sensor

(5) PF motor temperature sensor

(6) Ribbon motor temperature sensor

(7) Paper Near End sensor

2-2-4. Drivers

(1) PF motor driver

(2) Ribbon motor driver

(3) Head driver

(4) Buzzer driver

(5) Fan driver

2-2-5. Other circuits

(1) Power supply circuit

(2) Reset circuit

(3) Clock circuit

(4) Ope-pane circuit

(5) USB I/F control circuit

(6) RS232C I/F circuit

(7) Option I/F circuit

(8) Peeler circuit (for optional peeler)

(9) Cutter control circuit (for optional cutter)

2-3. Operation Panel

2-3-1. External view

(1) Keys

(2) LEDs

2-3-2. Operation using the keys

(1) Normal operation

(1-1) Sensor adjustment mode

(1-2) Menu setting mode

(2) Test mode

(2-1) Self print mode

(2-2) Hex dump mode

(3) Factory/Service mode

(3-1) General

(3-2) How to enter the Factory/Service Mode

(3-3) Factory/Service Mode menu table

2-4. Interface

2-4-1. Serial Interface

(1) Specifications

(2) Signal line and pin assignment

(3) Protocol

2-4-2. USB Interface