Seiko DH33 - Manual (Page 15)

28
English
29
English
Problem Possible cause Solution
The watch calculates decompression
diving even after a dive. The diver ascended defying the
decompression stop violation warning. When the surface interval time is less than 5 minutes, making a
decompression stop as indicated by the watch will return the
display for no-decompression diving.
**The log data stored in the dive log function will not be erased when the battery is replaced with a new one. If any malfunction is found during
checking, however, the stored log data may be erased when the watch is repaired. It is recommended that the log data in memory be noted down
in your log book before requesting a battery change.
SPECIFICATIONS
1 Frequency of crystal oscillator ... 32,768 Hz (Hz = Hertz … Cycles per
second)
2 Loss/gain (Monthly rate) ............ Less than 15 seconds at normal
temperature range (5° C ~ 35° C)
(41° F ~ 95° F)
3 Operational temperature range ... –5° C ~ +40° C (23° F ~ 104° F) for
depth measurement, alarm sound,
display and illuminating light
–10° C ~ +60° C (14° F ~ 140° F) for
timing function
* In very low temperatures, the
display light may dim, and the
change of digits may become slow.
4 Display system
TIME/CALENDAR display ..... Hour, minutes, seconds, month,
date, and day [surface interval time
and desaturation time]
REGULAR ALARM display .... Regular alarm time (hour and
minutes)
FO 2 (NITROX) display ............ FO 2 setting
DIVE PLAN display ............... Depth rank and no-decompression
limit [surface interval time and
desaturation time]
DIVE LOG display ................. Log No., date of dive, dive time,
entry/exit time, FO
2 setting, average
depth, maximum depth, water
temperature at maximum depth,
and residual nitrogen/oxygen at end
of dive
HOUR CORRECTION display .. Hour and minutes
Dive mode ............................ No-decompression limit, dive time,
current depth, maximum depth,
water temperature, residual
nitrogen, FO
2 setting, current time,
PO 2 value and residual oxygen
5 Display medium ......................... Nematic Liquid Crystal, FEM (Field
Effect Mode)
6 Battery ....................................... SEIKO CR2032, 1 piece
7 Battery life ................................. Approx. 3 years
8 Illuminating light ......................... Electroluminescent panel
9 Sensor accuracy ......................... Depth: Within ±3% of the displayed
value + 0.5 m (2 ft)
Water temperature: ± 2° C (4° F)
10 IC (Integrated Circuit) ................. C-MOS-LSI, 2 pieces
Non-volatile memory, 1 piece
* The specifications are subject to change without prior notice for product improvement.
TROUBLESHOOTING
Problem Possible cause Solution
The watch gains/loses occasionally. The accuracy will be corrected when the watch returns to normal
temperature. Set the time before using the watch. It is so adjusted
that it operates with stable accuracy when used on the wrist within
a temperature range between 5° C and 35° C (41° F and 95° F). The watch was left in low or high
temperatures.
The display became blank. The battery has run down. Take the watch to the retailer from whom it was purchased
immediately for battery replacement.
**
The battery life indicator is shown.
The battery life indicator is flashing. The battery is nearing its end.
A blur inside the glass persists. Consult the retailer from whom it was purchased. The gasket is deteriorated, and water
got inside the watch.
Unless you are at an altitude over 6,000
m (19,700 ft), the pressure sensor is out
of order. Three altitude rank indicator bars are
flashing.
The number of residual nitrogen
indicator bars on the display
increased while on the surface. You moved to a higher altitude across
the altitude ranks. The watch senses the atmospheric pressure change and re-
calculates residual nitrogen. The obtained residual nitrogen will be
taken into consideration in calculations in the dive plan function.
The atmospheric pressure inside
airplanes corresponds to altitude rank
“2”, and the watch has re-calculated
the altitude. The number of residual nitrogen
indicator bars on the display
increased during flight.
Water remains on the auto switch. The display will not return to the
TIME/CALENDAR after diving. Wipe the auto switch with a dry cloth.
Water remains on the auto switch, or
the auto switch was turned on during
flight and the airplane landed. The dive function was shown while
on the surface, and a depth of more
than 1.5 m (5 ft) was displayed. Make sure that the auto switch is always clean and dry. In a place
such as inside an airplane where the atmospheric pressure changes
sharply, take utmost care not to leave the auto switch wet.
A dive beyond the specified limit was
made within the past 48 hours. The dive function will not start. Do not use the watch for diving for 48 hours.
The battery life indicator is lighting up or
flashing. Take the watch to the retailer from whom it was purchased
immediately for battery replacement.
Three altitude rank indicator bars are
flashing. The watch cannot be used for diving at an altitude over 6,000 m
(19,700 ft). Unless you are at an altitude over 6,000 m, the
pressure sensor is out of order. Consult the retailer from whom
it was purchased.