Philips ah 476 schematic

Page 1

REPLACEMENT PARTS LIST

NOTE: When ordering replacement parts please specify the part number as shown in this list including Description and complete Model Number.
Complete information will help expedite the order. Replacement parts may occasionally differ in part number or value from the Factory installed
part. In either event the replacement part has been chosen to provide equal or improved performance.

DESCRIPTION

PART NO.

REF. DESCRIPTION PART NO. REF.
COI LS
L1 Choke Coil, 2mh 320399-0001
L2 Choke Coil, .5 mh 361580-0001
CAPACITORS
C1 Electrolytic, 8 mfd., 50V, NrP. 270040-0022
C2 Metalized Polyester, 1.5 mfdr,50V 250707-0001
RESISTORS
H1 Wire Wound, 3.3 Ohm,10%,1OW 240082-0014
R2 Wire Wound, r7 ohm,10%,10W 240082-0019
R3 Wire Wound, 7 ohm,10%,1 0W 240082-0022
R7 Wire Wound, 6 ohm,10%,1OW 240082-0021
R8 Wire Wound, r225 ohm,10%,2W 240104-0003
R9 Wire Wound, 13 uhm,10%,10W 240082-0028
SWITCH ES
81 Mid-Range Attenuation Switch 160585-0001
CONTROL KNOBS
Mid-Range Attenuation Select Knob 143 729-0002
MISCELLANEOUS
10 Woofer Speaker 581 019-0001
2" Domed Mid-Range Speaker 2422237432002
1" Domed Tweeter Speaker 2422-257K4312

Decorative Screen/Fling Assv. 1/10"
Woofer
Press Lock (4 used-on cabinet)
Locking Pin Holder (4 used-on Grille
Cloth Frame)
Locking Pin {4 used-on Grille Cloth
Frame)
Control Plate
Grille Cloth
Speaker Cabinet
Grille Cloth Frame,w/o Cloth 81
Mtg. Hardware
Push Type Terminal Bdr w/Red &
Black Pushbuttons
Junction Plate Mounting Gasket
Tweeter Mounting Gasket
Switch Mounting Gasket f/S1
Tinnerman Clip (4 used)
Solderless Terminal f/Woofer & Mid-
Flange Speakers (4 used)
Solderless Terminal f/Tweeter Speaker
(2 used)
Pal-Nut, 3/8-32, f/Sl Mtgr
No. 8 x 1%" Self-Tapping Screw f/
Junction Plate Mtg.
No. 4 x 5/8" Self-Tapping Screw f/
Locking Pin Holder Mtg,
No. 8 x A Self-Tapping Screw f/
Woofer Speaker Mtg. (Torx Hd.)
No. 6 x 7/8" Self-Tapping Screw
(Torx Hd., 13 used)

1 714340002
1 43 935-0001

1 43 935-0001
143 937-0001
1 514900002
400939-0001
597938-0001
697940-0005
200539-0002
543395-0001
643951-0001
643951-0002
1 03105-0624
1 02487-001 1

102487-0030
1 023 57-0001

1 02808-1 832
1 02822-1807
1 0331 0-1 808
1 03309-1809

When ordering replacement Grille Cloth include complete Model Number, Grille Cloth Part Number,and approx. cloth size

"When replacing this switch it is recommended that the Control Plate also be replaced if it is damaged upon removal from the speaker cabinet.

SCHEMATIC DIAGRAM

T0
AMP ,
OUTPUT R8
(HOT)
.225 01
W s MFD c2
50v .
R3 Hz in NP'
7 4.7 3.3
+3dB
._
+6dB
s1
MID RANGE
R7
woorea MID RANGE 6
+0
TO \ mama
AMP J t a
OUTPUT
(GND) NOTES:

UNLESS OTHERWISE SPECIFIED:
1. CAPACITANCE VALUES ARE IN MICROFARADS,

10%, 50V.

2. RESISTORS ARE 10 WATT, 10% TOLERANCE.
3. S1 SHOWN IN NOMlNAL(0dB) POSITION.

.3.