Citizen Peeler CL-S6621 User manual

Technical Manual
CL-S6621
Thermal Transfer Barcode & Label Printer
PZY90003-00
1.00E-1304

CL-S6621 ii
Copyright ©2013 by CITIZEN SYSTEMS JAPAN CO., LTD.

iii
CL-S6621
CHAPTER 1SPECIFICATIONS
CHAPTER 2 OPERATING PRINCIPLE
CHAPTER 3 DISASSEMBLY AND MAINTENANCE
CHAPTER 4 TROUBLESHOOTING
CHAPTER 5 PARTS LISTS
CHAPTER 6 CIRCUIT DIAGRAMS
APPENDICES

CL-S6621 iv
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
result in death or serious injury.
Indicates a situation which, if not observed and handled properly, could
result in injury or property damage.
: 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.
Warning
Caution
Warning
Caution

1-1
CL-S6621
CHAPTER 1
SPECIFICATIONS

CL-S6621 1-2
CHAPTER 1 SPECIFICATIONS
TABLE OF CONTENTS
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

General Specifications
1-3 CL-S6621
1-1. General Specifications
Printing
Printing method Thermal transfer/Direct thermal
Main scanning line density: 203 dots/inch (8 dots/mm)
Sub-scanning line density: 203 dots/inch (8 dots/mm)
Resolution
Head 1344 dots (effective dots: 1344 dots)
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 *1Prints while cutting at designated sheet units.
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.)
Peel mode*1Peels labels from the liners after printing them.
Media
Types of media Roll, fanfold
(continuous media, die-cuts, continuous tags, paper or tickets)
Recommended media Thermal transfer: label media (LR1111 Lintec)
Direct thermal media: label media (150LA-1 Ricoh),
tag media (130LHB Ricoh)
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*219.0 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"
Max. external diameter: 127mm 5"On-board roll media
diameter Media core: 25.4 to 76mm
Min. media core external diameter
(when using label media): 50.8 mm
1 to 3"
2"
*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".

General Specifications
CL-S6621 1-4
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
paper core
33.4±0.50mm 1.31 ± 0.02"
Inner diameter of the
paper core
25.4 ±0.25 mm 1.00 ±0.01"
Ribbon end tape
length
Max. 80.0 mm 3.15”
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.

General Specifications
1-5 CL-S6621
Font
For Datamax®emulation*3
1. Seven kinds of fixed pitch font
Overseas, English fonts and European fonts
2. OCR fonts
OCR-A*5, 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. TrueTypeTM rasterizer *6
For Zebra®emulation*4
1. Five kinds of fixed pitch font
Overseas, English fonts and European fonts
2. OCR fonts
OCR-A*5, OCR-B*5
3. Proportional font
CG Triumvirate Condensed Bold
4. True type™ rasterizer*6
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*3and Zebra®
programming language*4
*5: The OCR font may have a low recognition rate according to the reader.
*6: It is equipped with UFSTTM and TrueTypeTM rasterizer that are licensed from Monotype Imaging,
Inc.
TrueTypeTM is a trademark of Apple Inc.
UFSTTM is a trademark of Monotype Imaging, Inc.
*7: "PC866U Ukraina" is available for Datamax® emulation only.

General Specifications
CL-S6621 1-6
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*8IEEE1284 (Compatible, Nibble, ECP mode)
Wired LAN:
Ethernet interface (10-Base-T/100-Base-TX)
Network
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
switch
Detects head open.
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*9)
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*9)
*8: This interface is Non-L. P. S. (Limited Power Source).
*9: Standby mode is default OFF.

General Specifications
1-7 CL-S6621
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)
[Operating and printing assurance condition] [Storage assurance condition]
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
-20 60
5
85
Humidity %
Temperature °C
Operating assurance temperature
Printing assurance temperature
0 535 40
30
40
80
Humidity %
Temperature °C
Storage assurance
temperature

Printable Area
CL-S6621 1-8
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.
Maximum media width: 178 mm (7.01")
168 mm (6.61”)
Reference end
Unprintable area
Printable area
Media guide
Direction of media feed
2.5 mm (0.10") 7.5 mm (0.30")

Printing Position Accuracy
1-9 CL-S6621
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:
*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.
1
±
2 mm*
2
(0.04 ± 0.08")
Reference edge
(Paper guide)
Printable area
Direction of media feed
Ideal printing start position
Actual printing start position*
1
2.5 ± 1 mm*
3
(0.10 ± 0.04")
100
±
2 mm*
4
(39.4 ± 0.08")
Maximum media width: 178 mm (7.01")
Unprintable area
2.5 mm
(0.10")
1 mm (0.04")
Unprintable area
A
BCDEFG

Adjustable Sensors
CL-S6621 1-10
(Moveable range of the
transparent sensor)
4.8 to 88.9 mm
(0.19 to 3.5")
2.7 to 86.8 mm
(0.11 to 3.42")
(Moveable range of the
reflective sensor)
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".
Maximum media width: 178 mm (7.01")
168 mm (6.61”)
Media guide
Direction of media feed
2.5 mm
(0.10")
Unprintable area
Unprintable area
Center
Printable area
Media
7.5 mm
(0.30")

2-1 CL-S6621
CHAPTER 2
OPERATING PRINCIPLES

CL-S6621 2-2
CHAPTER 2 OPERATING PRINCIPLES
TABLE OF CONTENTS
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

2-3
CL-S6621
(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

Operation of Each Mechanism
CL-S6621 2-4
SA Ribbon Motor R
SA Ribbon Motor F
Ribbon Sensor F
("SA, Ribbon Sensor" on the front side)
Ribbon Sensor R
("SA, Ribbon Sensor" on the rear side)
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)
This motor takes up ribbon. A thermistor is attached to the side of
this motor to detect the motor temperature.
SA Ribbon Motor R
(Rear side)
This motor gives back tension to ribbon.
Ribbon Sensor F
(“SA, Ribbon Sensor”
on the front side)
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.
Ribbon Sensor R
(“SA, Ribbon Sensor”
on the rear side)
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.

Operation of Each Mechanism
2-5 CL-S6621
SA, Head
Transparent sensor
(SA TRA Sen PCB)
SA PF Motor
SA, Head Up Switch
SA PNE Sensor
Ref ective Sensor
(SA Ref Sen PCB)
(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)
(SA TRA Sen PCB)
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.
Reflective Sensor
(Bottom sensor)
(SA Ref Sen PCB)
This sensor is a photo sensor to detect the black marks on tag. It also
detects the media end.
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
sensor)
This sensor is a photo sensor to detect a near end status of roll paper
installed.

Operation of Each Mechanism
CL-S6621 2-6
Ribbon
SA PF Motor
Motor Gear
Gear Reduction PF 1
Gear Reduction PF 2
Gear Idle PF
SA2_Platen
Thermal Elements
[Right side view]
SA, Head
Media
1
2
3
4
5
6
6
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").