Zebra TC21 Product Reference Guide

Maintenance and Troubleshooting
192
5-Slot Charge Only Cradle Troubleshooting
Spare Battery not
charging.
Charger is not
receiving
power.
Ensure the power cable is connected securely to both the
charger and to AC power.
Spare battery is
not correctly
seated.
Remove and re-insert the battery into the battery adapter,
ensuring it is correctly seated.
Battery adapter
is not seated
properly.
Remove and re-insert the battery adapter into the charger,
ensuring it is correctly seated.
Battery was
removed from
the charger or
charger was
unplugged from
AC power too
soon.
Ensure charger is receiving power. Ensure the spare battery
is seated correctly. The standard battery charges from fully
depleted to 90% in approximately three hours. The extended
battery charges from fully depleted to 90% in approximately
four hours.
Battery is faulty. Verify that other batteries charge properly. If so, replace the
faulty battery.
Table 18 Troubleshooting the 4-Slot Charge Only Cradle with Battery Charger
Problem Cause Solution
Table 19 Troubleshooting the 5-Slot Charge Only Cradle
Problem Cause Solution
Battery is not
charging.
Device
removed from
the cradle too
soon.
Replace the device in the cradle. The standard battery
charges from fully depleted to 90% in approximately three
hours. The extended battery charges from fully depleted to
90% in approximately four hours.
Battery is faulty. Verify that other batteries charge properly. If so, replace the
faulty battery.
Device is not
inserted
correctly in the
cradle.
Remove the device and reinsert it correctly. Verify charging
is active. Touch > System > About phone > Status to
view battery status.
Ambient
temperature of
the cradle is too
warm.
Move the cradle to an area where the ambient temperature
is between 5°C (41°F) and 40°C (104°F).

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