Newcon Optik PHANTOM 20 operation manual Measure

11.2. The problems likely to occur in the range finder are
listed with their causes and remedies below in						Table 11.1
							Table 11.1
Possible problems	Probable cause						Remedy
1. Picture blurred	Condensed			moisture,		Clean exterior of optical
in right-hand	dirt	on		external		parts	as directed under
eyepiece	optical			surfaces		11.6.2
	Condensed			moisture		Dry	range finder	as
	on internal			optical		directed under 11.6.3
	surfaces					Clean	contacts	as
2. Readiness indica-	Open		circuit		in
tor remains dark	battery section (when					directed under 11.6.1
after depressure of	standard		battery		is
MEASURE 1	used)					Replace fuse as directed
(MEASURE L)	Blown		fuse		in
button	protection			device		under 12.3.1
	when			vehicle
	electrical		system		is
	used					Clean	contacts	as
	Open		circuit		in
	battery	section when				directed under 11.6.1
	vehicle			electrical
	system is used					Replace the battery with
3. Red glow is obser-	Unallowably				low
ved in indicator	battery voltage					a newly charged one as
eyepiece						directed under 12.3.2

11.3.To correct problems by using the individual SPTA set proceed as follows (see Fig. 6).

11.3.1.To replace the fuse link 2 in the protection device:

- Unscrew the threaded cover from the housing of the protection device;

- Remove the defective fuse link;

- Insert the spare fuse link from the SPTA set;

- Screw the cover on the housing of the protection device.

11.3.2.To replace the rechargeable battery 1: - Open the cover of the battery section;

- Remove the used battery;

- Fit the new battery in the section so that the "+" terminal of the battery is connected with the bottom contact of the section;

- Close the cover of the battery section.

11.3.3.To replace the fuse link in the charging device: - Unscrew the outer threaded covers from the fuses;

- Unscrew the bayonet of the fuse link holders; - Remove the fuse links;

- Fit in good fuse links;

- Close the holder covers;

- Screw on the outer threaded covers.

11.3.4.The individual SPTA set includes the following tools and accessories:

- Charging device 11, operated to charge Rechargeable battery 10D-0, 55С-1 from a vehicle electrical system (27±2.7) V DC or 22-29 V and from a commercial line 220 V 50 Hz;