Zebra TC21 Product Reference Guide

Maintenance and Troubleshooting
190
1-Slot Charge Only Cradle
1-Slot USB/Ethernet Cradle
Table 16 Troubleshooting the 1-Slot Charge Only Cradle
Symptom Possible Cause Action
LEDs do not light
when device is
inserted.
Cradle is not receiving
power.
Ensure the power cable is connected securely to
both the cradle and to AC power.
Device is not seated
firmly in the cradle.
Remove and re-insert the device into the cradle,
ensuring it is firmly seated.
Device battery is not
charging.
Device was removed
from cradle or cradle was
unplugged from AC
power too soon.
Ensure cradle is receiving power. Ensure device is
seated correctly. Confirm main battery is charging.
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.
The device is not fully
seated in the cradle.
Remove and re-insert the device into the cradle,
ensuring it is firmly seated.
Extreme battery
temperature.
Battery does not charge if ambient temperature is
below 5°C (41°F) or above 40°C (104°F).
Table 17 Troubleshooting the 1-Slot Charge Only Cradle
Symptom Possible Cause Action
LEDs do not light
when device is
inserted.
Cradle is not receiving
power.
Ensure the power cable is connected securely to
both the cradle and to AC power.
Device is not seated
firmly in the cradle.
Remove and re-insert the device into the cradle,
ensuring it is firmly seated.
Device battery is not
charging.
Device was removed
from cradle or cradle was
unplugged from AC
power too soon.
Ensure cradle is receiving power. Ensure device is
seated correctly. Confirm main battery is charging.
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.
The device is not fully
seated in the cradle.
Remove and re-insert the device into the cradle,
ensuring it is firmly seated.
Extreme battery
temperature.
Battery does not charge if ambient temperature is
below 5°C (41°F) or above 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