Philips HQ4851A Service Manual

Service

Service

Service

Domestic Appliances and Personal Care

Rechargeable shaver

100-240V

5120

R1

L1

D1

C2

C1

D6

R4 D4

R6

C3

R14

C4

TS4

R2

R3

D5

TS22

TS3

R7

TS5

R9

R10

GENERAL

The HQ4851 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 100-240V, 50/60Hz.
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.
When the battery is almost empty, the red LED starts
blinking.

D20

D2
D3

R5

TS1

TS2

R24

R8

TS20

R35

R33

PM

C6

C5

SK1

NiCd

A
2x
AA

L20

R25

C22

3

eoo

1

mains

5

dis

4

smot

TEA1404TS

2

moo

12

rreg

ctim rref

duty

ncell gnd

11 20 18 19 13

R34

C20

C21

IC1

R28R27R26

D21 D22

14151617

9

vccupcvacvbli

full

10

emp

7

vbr

R29

6

t acc

8

t amb

R31

C23

R30

R32

The electronic circuit incorporates the following
functions and controls:

- a 650 mA Quick Charge supply

- a 30 mA Trickle Charge supply

- a 2.5V Dynamic supply when shaving from
the mains.

- an open cell protection

- 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

Charging current : 650/30 mA

Charge indicator : 1x LED green
Input voltage : 100-240V
Motor voltage : 2.4V
Battery : 2x AA NiCd
Cell capacity : approx. 600 mAH

Battery low indicator : 1x LED red

Comfort control : fixed setting

Shaving heads : HQ4 - 4822 690 30468

Screwdriver T8 : 4822 395 50263
Charging system : S.O.P.S./ timer- temp. control
Charging time : approx. 60 mins

SAP Coding : HQ4851
initial 4 hours

Published by Philips Domestic Appliances and Personal Care Printed in The Netherlands Copyright reserved Subject to modification

©

4322 277 00190
00/01

HQ 4851/A

14

1

15

15+16

X

2

17

18

Y

3

4

NiCd

5

Z

6

24

7
8

19

20

9

10

A2

1.8x10/T8

21
22
23

A1

1.8x10/T8

11
12

13

+

-

1 4822 441 11276 Protecting cap
2 4222 036 01980 Head holder
3 4822 690 30468 HQ4 shaving head
4 4822 404 40728 Retaining bracket
5 4222 036 02510 Housing

6 4222 036 02370 Inlet
7 4222 036 02920 Hairchamber
8 4822 522 32852 Gearwheel
9 4822 404 40656 Lever
10 4822 441 11275 Frame

11 4822 522 32851 Pinion
12 4822 361 20936 Motor
13 4822 492 63165 Motor clamp
14 4822 690 10081 Trimmer
15 4822 130 34167 Zener diode

16 4222 036 02390 Motor connector
17 4822 277 21689 On/off switch
18 4222 036 02520 Power module
19 4222 036 00620 Battery holder
20 4822 138 10727 NiCd cell 2xAA

21 4222 036 02530 Cover
22 4822 321 10095 Flex EU

- 4822 321 10096 Flex GB

- 4222 036 02480 Flex ROK

- 4822 321 10344 Flex USA/CDN
23 4822 479 30183 Cleaning brush

24 4822 466 12236 Foam plate
A 4822 502 30526 S.t. screw 1.8x10/T8
4222 036 02120 Pouch