Service Manual
Philips Domestic Appliances and Personal Care
Published by Philips Domestic Appliances and Personal Care Printed in the Netherlands © Copyright reserved Subject to modification
Rechargeable shaver
HQ 4819
SAP coding HQ 4819
4322 277 00697
01/10
GENERAL
The HQ 4819 shaver can be recharged in 1 hour by
means of a ‘Fly Back Self Oscillating Power supply’.
This electronic circuit enables the battery to be charged
at 100-240 V, 50/60 Hz.
It is possible to have a shave directly from the mains.
The green LED comes on when the shaver is
connected to the mains and will blink to indicate that
the battery is fully charged.
The electronic circuit incorporates the following
functions and controls:
- a 900 mA Quick Charge supply
- a 30 mA Trickle Charge supply
- a 1.25V Dynamic supply when shaving from the mains.
- an open cell protection (Vbat < 2.5V)
- an inrush and surge protection (R1).
- a temperature protection of the battery.
(if Tbat - Tamb > 5°C or if Tbat > 65°C, charging will
switch-over from quick charge to trickle charge).
TECHNICAL DATA
Input voltage : 100-240V
Motor voltage : 1.2V
Battery : 1x AA NiMH
Cell capacity : approx. 1100 mAH
Charging system : S.O.P.S./ temp. control
Charging time : approx. 60 mins
initial 4 hours
Charging current : 900/30 mA
Charging indicator : 1x LED green
Comfort control : fi xed setting
Shaving heads : HQ4 - 4822 690 30468
Screwdriver T8 : 4822 395 50263
R1
D1
C1 C2
100-240V
D2
T1
D3
20
C6
C8
A
1X
AA
NiMH
13
L1
R7
SK1
PM
D9
C9
R16
Drn
Vac
1712 18
3
Vin
Creg
Vic
Vat
IC1
TEA1402T
19
5
7
C3
Vtacc
Vtamb
10
9
C4
R5
R6
R10
R9
Cosc
Gnd
LED
Mot
Rsec
Rref
Src
6
8
D6
R17
11
12
14
4
16
R2 R3 R4
15
D4
D7
PM
R14
R15
TS2
D5
C7
5090
C5
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