PHILIPS HQ4850B
Manual de Servicio

NUDOS NiMH shavers
HQ4850 The green LED �+� goes on. If the cells are almost empty the red LED �-� will go on as well. When the red LED goes out, there is enough capacity for one cordless shave of approx. 3 minutes. After 60 minutes the green LED starts to blink, to indicate that the cells are full. The signals during shaving are described under �ALL�. HQ3870 + HQ4870 One of the LEDs of the capacity indicator will start to blink. If the cells are almost empty, the block �20� will be red. When it turns green, there is enough capacity for one cordless shave. Each time when another 20 % of the full charge has been reached, the next block of the indicator will start to blink. After 60 minutes, the �100� block starts to blink. This LED stops to blink as soon as shaver is fully charged. If charging is continued (in the 25 mA mode now), the IC will force the PM to supply 1000 mA for half a sec. every 10 secs to compensate for the continuous burning of the LEDs. When switching on and off, the actual capacity is shown for approx. 8 seconds. After shaving cordless with a fully charged shaver for some time, the �100� LED will be no longer visible. Then, the other blocks will gradually disappear one by one. The next signal is described under �ALL�. HQ4890 The green LED goes on and one segment of the LCD will start to blink. If the cells are empty, this will be the �20� segment. The red LED will remain on until there is enough capacity in the cells for one cordless shave of approx. 3 minutes. Each time when another 20 % of the full charge has been reached the next segment will start to blink. After 60 minutes the word �FULL� and the green LED start to blink. When shaving cordless with a fully charged shaver, first �FULL� will disappear. After some time the �100� segment will disappear, etc. Finally, a blinking �20� segment will show together with the red LED, as described below. ALL During discharging the capacity counter counts down proportional to the motor current. When the counter reaches the �zero� state, a Nearly Empty Indication (NEI) is given by the red LED. After the shaver has been switched off the red LED will blink for 4 seconds. If the shaver is not in use, the counter will count down at a slow rate during approx. 100 or 200 days, to compensate for the self-discharge of the cells and the power consumption of the ICs (100 days at Tamb>35�C, 200 days at Tamb<35�C). HQ 4850
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3
TS20 SK1 R36 R26 1 6 9 R34 R21 R22 13 14 15 16 5 C23 12 17 18 19 11 R33 7 IC2 10 D22 SAA 1500T 20 D21 R25 28

R35

R27

D9

4 3

C21

C22

TS20 SK1 R36 R26

R35 6 R34 R21 R22 3 C21 C22 5 C23 12 4

1

28 9

R27

D9

R25 13 14 15 16 17 18 19 11 20 IC2 10 D20 D25 D24 D23 D22

R33 7 SAA 1500T

HQ 3870/HQ 4870

12345

TS20 SK1 R36 R26 R35 6 R34 R21 R22 4 3 C21 C22 5 12 9 13 14 15 16 17 18 19 R33 11 7 IC2 20 10 D21 D22 LCD 1 28 R27 R25 D9

C23

SAA 1500T

HQ 4890

PCS 99 109