Zebra TC21 Product Reference Guide

Maintenance and Troubleshooting
185
Display
The display can be wiped down with an approved alcohol wipe, but care should be taken not to allow any
pooling of liquid around the edges of the display. Immediately dry the display with a soft, non-abrasive
cloth to prevent streaking.
Camera and Exit Window
Wipe the camera and exit window periodically with a lens tissue or other material suitable for cleaning
optical material such as eyeglasses.
Cleaning Battery Connectors
1. Remove the main battery from the mobile computer.
2. Dip the cotton portion of the cotton-tipped applicator in isopropyl alcohol.
3. To remove any grease or dirt, rub the cotton portion of the cotton-tipped applicator back-and-forth
across the connectors on the battery and terminal sides. Do not leave any cotton residue on the
connectors.
4. Repeat at least three times.
5. Use a dry cotton-tipped applicator and repeat steps 3 and 4. Do not leave any cotton residue on the
connectors.
6. Inspect the area for any grease or dirt and repeat the cleaning process if necessary.
CAUTION: After cleaning the battery connectors with bleach-based chemicals, follow the Battery
Connector Cleaning instructions to remove bleach from the connectors.
Cleaning Cradle Connectors
1. Remove the DC power cable from the cradle.
2. Dip the cotton portion of the cotton-tipped applicator in isopropyl alcohol.
3. Rub the cotton portion of the cotton-tipped applicator along the pins of the connector. Slowly move the
applicator back-and-forth from one side of the connector to the other. Do not leave any cotton residue
on the connector.
4. All sides of the connector should also be rubbed with the cotton-tipped applicator.
5. Remove any lint left by the cotton-tipped applicator.
6. If grease and other dirt can be found on other areas of the cradle, use a lint-free cloth and alcohol to
remove.
7. Allow at least 10 to 30 minutes (depending on ambient temperature and humidity) for the alcohol to air
dry before applying power to cradle.
If the temperature is low and humidity is high, longer drying time is required. Warm temperature and low
humidity requires less drying time.
CAUTION: After cleaning the cradle connectors with bleach-based chemicals, follow the Cleaning Cradle
Connectors instructions to remove bleach from the connectors.

Zebra TC21 Specifications

General

Display diagonal	5 \
Touch technology	Multi-touch
Touchscreen type	Capacitive
Display resolution	1280 x 720 pixels
Battery capacity	3100 mAh
Battery life (max)	10 h
Battery recharge time (off)	4 h
Flash memory	32 GB
Internal memory	3 GB
Internal memory type	-
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Maximum memory card size	128 GB
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Bluetooth version	5.0
Security algorithms	EAP-PWD, EAP-PEAP, EAP-TLS, EAP-TTLS, LEAP, MSCHAPv2, WEP, WPA, WPA-AES, WPA-TKIP, WPA2, WPA2-AES, WPA2-TKIP
Rear camera resolution (numeric)	13 MP
USB 2.0 ports quantity	1
RFID reader	No
Scanner type	1D/2D
Certification	RoHS 2011/65/EU; 2015/863 REACH SVHC 1907/2006
Product color	Black
International Protection (IP) code	IP67
Speakers	Mono
Operating system version	10
Operating system installed	Android
Number of cores	8
Processor model	660
Processor family	Snapdragon
Processor frequency	1.8 GHz
Processor manufacturer	Qualcomm
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Harmonized System (HS) code	84713000

Weight and Dimensions

Depth	13.7 mm
Width	79 mm
Height	158 mm
Weight	236 g