Table of Contents
Advertisement
Preliminary - Subject to Change Without Notice
Refer to the installation manual for the PS440 Control
Display Unit, P/N 006-10655-XXXX, for PS440 removal and
re-installaton instructions.
Refer to the installation manual for the MCDU, P/N XXXX,
for MCDU removal and re-installation instructions.
Refer to the installation manual for the RM-855, P/N XXXX,
for RM-855 removal and re-installation instructions.
9. Maintenance Procedures
9.A. In-Aircraft Adjustments
9.A.(1) General
All alignment and adjustment procedures are accomplished
during bench maintenance. When unit performance indicates
an adjustment or an alignment is required technician
should remove the unit from the aircraft, then reference
should be made to the related Maintenance Manual.
9.A.(2) Audio Levels
The audio inputs and outputs of the KRX 1053 are factory
adjusted to the following levels:
• Receiver/Sidetone: 7.75 Vrms into 600 ohms at maximum
• Data Input: 0.775 Vrms across 600 ohms
• Microphone Input: 200 mVrms to 2 Vrms (typical) into
• Data Output: 1.775 Vrms into 600 ohms
• SELCAL Output: 0.775 Vrms into 600 ohms
If necessary, these levels may be adjusted for
compatibility with other aircraft systems. To access the
adjustments, loosen the two Dzues fasteners on the top of
the unit and remove the dust cover. Refer to Figure 2020
for adjustment locations. Replace and secure the dust
cover once the adjustment is complete.
9.B. System Protection
The KHF 1050 system is primarily protected by circuit breakers
located at the circuit breaker panel in the aircraft. The KPA
1052 contains an internal fuse for additional protection.
Revision 0
10640I00.SLK
KHF 1050 SYSTEM INSTALLATION MANUAL
volume
150 ohms
N
23-10-09
Page 2045
Mar/2003
Hide quick links:
Advertisement
Table of Contents
