Icom IC-910H service manual Software Adjustment

5-6 SOFTWARE ADJUSTMENT

ADJUSTMENT	ADJUSTMENT CONDITION	DISPLAY	OPERATION
ENTERING 1	• Enter software adjustment mode:		The display shows the selection
SOFTWARE	1 Turn power OFF.		item scleen for the adjustment
ADJUSTMENT	2 Terminate the [REMOTE] jack with a		mode, push [0]–[9] key to select
	3.5(d) mm mini-plug.		adjustment item. Once enterring
	3 While pushing [RIT] and [SATELLITE]		adjustment mode, use [UP]/[DOWN]
	keys, turn power ON.		key to skip/back items, or [ENT] to
			return the selection item screen.

CAUTION:

NEVER select ajustment items [6]–[9] key on the selection item screen while transceiver is connected to an SSG. Because transceiver automatically transmits when transmit items [6]–[9] is selected.

ADJUSTMENT	1	• Push [0] to enter the volume center set-			Push [RIT] key to set the volume
ITEM (0)		ting.			center positions, and to step next.
VOLUME		• Set the [RIT] and [SHIFT] controls to cen-
CENTER		ter.
PLL UNLOCK	1	• Wait for a while.		USB	Verify the unlock detection for VHF
					by blinking the frequency on the dis-
					play, then push [RIT] key to step
					next.
	2			USB	Verify the unlock detection for UHF
					by blinking the frequency on the dis-
					play, then push [RIT] key to exit vol-
					ume center setting to selection item
					screen.
ADJUSTMENT	1	• Push [1] to enter the receiver adjustment.			Push [RIT] key to tune the “144 tune
				USB
ITEM (1)		• Connect a standard signal generator to			1”, and to step next.
TUNED BPF		[VHF ANT] connector and set as:
(for 144 M)		Frequency	: 136.02150 MHz
		Level	: 50 µV* (–73 dBm)
		Modulation	: OFF

•Receiving

	2 • Set an SSG as	:	USB	Push [RIT] key to tune the “144 tune
	Frequency	: 146.02150 MHz		2”, and to step next.
	Level	: 50 µV* (–73 dBm)
	• Receiving
	3 • Set an SSG as	:	USB	Push [RIT] key to tune the “144 tune
	Frequency	: 146.02150 MHz		3”, and to step next.
	Level	: 50 µV* (–73 dBm)
	• Receiving
(for 430 M)	4 • Set an SSG as	:	USB	Push [RIT] key to tune the “430 tune
	Frequency	: 420.02150 MHz		1”, and to step next.
	Level	: 50 µV* (–73 dBm)
	• Receiving
	5 • Connect an SSG to [UHF ANT] connector		USB	Push [RIT] key to tune the “430 tune
	and set as	:		2”, and to step next.
	Frequency	: 440.02150 MHz
	Level	: 50 µV (–73 dBm)
	• Receiving
	6 • Set an SSG as	:		Push [RIT] key to tune the “430 tune
			USB
	Frequency	: 479.98150 MHz		3”.
	Level	: 50 µV* (–73 dBm)		Turn power OFF and ON to return
	• Receiving
				the normal operation mode. Then
				start the receiver adjustments (page
				5-3).

*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.

5 - 12