(2)
The upper display (GMT) provides GMT continuously from 00 hours 00 minutes to 23 hours 59 minutes. The GMT display is controlled by the GMT switch located in the lower corner of the indicator as follows:
(a)
The RUN setting of this switch is the normal operating position for the clock. GMT is shown continuously while in this mode.
(b)
The HLD (hold) setting is used to freeze the GMT display. Setting the switch to this position will hold the display at its present indicated value.
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MAINTENANCE MANUAL
FIRST OFFICER'S CLOCK
CAPTAIN'S CLOCK
SWITCH
CLOCK SWITCH SWITCH
ELAPSED TIME
ELAPSED TIME MEAN TIME CONTROL SWITCH MEAN TIME
CLOCK CONTROL CONTROL SWITCH CLOCK CONTROL SWITCH
SWITCH
GUN 001-104
GUN 105-999
GUN 051
GUN 001-050,052-999
Clock - Component Location
Figure 1
C23307
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(3)
(4)
(5)
(6)
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MAINTENANCE MANUAL
(c)
The FS (fast slew) or the HS (hour slew) setting is used for fast slew operation. When in this position, the hours display automatically advances at a rate of 1 hour/second. The minutes display is frozen at its present indicated value.
(d)
The SS (slow slew) or MS (minute slew) setting is used for slow slew operation. When set to this position, the seconds display is reset to zero. The minute display automatically advances at a rate of 1 minute/second. The hours display is frozen at its present indicated value.
ON GUN 105-999; Setting the date can be accomplished by the combined use of the SET switch and the pushbutton DATE switch. The day control function on the SET switch positions are: D, M, and Y, which are located adjacent to HS, MS, and HLD of the GMT control, respectively. Each function is operated as follows: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址:757 AMM 飞机维护手册 仪表 CHAPTER 31 - INSTRUMENTS 1(27)