Acer S53 Service Manual page 57

SIM： ： ： ： detect SIM card.
Check "SIM Card" insert to S520.
Tap "Test" to start.
Pass Criteria：
- SIM Status：Ready
Tool judges test pass or fail automatically.
OTG: test USB disk
Plug USB disk with OTG cable
Tap "Test" to start this test.
Tool judges Pass or Fail。
Chapter 5 51