Garmin APOLLO GX SERIES, Service Manual

Page: 46 / 166

Garmin AT Rev --
7-8 GX Service Manual © 2004 Garmin AT
NAV Return to Service Procedures
These functions are all accessed in the Test Mode, which is described in the preceding paragraph.
Preliminary Setup for the Following Tests:
If the TST 10 test station is being used, connect the unit under test to the test station in accordance
with the TST-10 User’s Manual, 560-0399-00. If the test station is not being used, follow the
connection instruction in each test step.
Connect the test station to the power supply. Power the test station on.
Power the unit under test on in the test mode by pressing the outermost smart keys while turning
power on.
1. System Initialization
NOTES
The system initialization function is used to reset non-volatile SRAM (NVRAM) and user
configuration data in EEPROM to their default values, and to clear user waypoints and flight
plans.
The reset USER NVRAM function
must
be executed if the navigation software is upgraded
(unless instructed otherwise).
CAUTION
Executing the system initialization will clear all customer information. Fill out the Service Data
Sheet located at the end of this manual.
For units returned for service or upgrade, the reset EEPROM and reset PLANS/WPTS functions
should not
be executed unless specifically instructed to do so, or all customer configuration,
waypoint, and flight plan data will be lost.
Specification:
Turn to the System Initialization page in test mode, and execute the system
initialization by pressing the SEL and ENT buttons.
The system initialization functions are listed in the following table.
System Initialization Functions
Reset
Function
Description Service Comment
All Resets NVRAM, EEPROM, and
PLANS/WPTS to default values.
No
USER
NVRAM
Resets all system variables to default values. Yes
See Note 1
EEPROM Resets all user EEPROM configuration data
to default values (not user info). No
See Note 2
PLANS/WPTS Clears all user flight plans and waypoints. No
See Note 2
Notes: 1. Reset USER NVRAM if the navigation software is upgraded. Otherwise, it
shouldn’t be necessary.
2. Reset EEPROM and PLANS/WPTS only if desired to reset all to default values
or otherwise specified by engineering.