Philips AZ4000 Service Manual page 25

CIRCUIT DIAGRAM - AF BOARD (PART 2)
1 2 3 4 5
A
B
To / From
FEATURE
BOARD
T300
L L
C
T301
A_GND
A_GND
T302
R R
T303
ALC
ALC
T304
MUTE
MUTE
T305 (5V7)
(5V7) +B
D T306
GND 3277
GND
T309 820R
PWRDWN
T307
(8V ~ 18V) +A
+A
T332
8V
T311
(OPTION)
SWPa SWPa
E T310
SWPb SWPb
T308
STANDBY
STANDBY
ALC_S 2251
ALC_S
220u
VS
VS
3276
F 470R
G
POWER ON / OFF CONTROL
H
POWER
SWPa
ON/OFF
SWITCH SWPb
3200
2207 2208
33K
6202
100n 100n
I
3259 3286
1N4148
47K 47K
7265
BC847B
J 3272 3278
1K 1K
6205
6206
1N4148 1N4148
T331
K 2209 6208
10n
1N4148
2210 3283
3209
100u 1K 22K
L
M
POWER STAGE PROTECTION
MUTE
4301
6301
3325
22K
3323 9304 1N4148
4K7
N for non
/01 /11 /16
2320
22u
3326
MUTE
2K2
3336
8K2
O
P
1 2 3 4 5
11 - 2
6 7 8 9 10
3291
1K
(8V ~ 18V)
+A
5V7 REGULATION 3282
3254 470R
3202
7253
470R
470R
3349
7264
BC327-25 3266
470R
2R2 3204
(OPTION)
10K
3270
7257 BC327-25
2R2
7258 7250
BDW94CFP
BC327-25 3271 (8V)
2R2
<--- 419mA
3273
3K3
3252
820R
(OPTION)
7268
BC857B
7263
BC847B (OPTION)
(OPTION)
2250
220u
3255
3253 3350
820R 560R
3280 3281 330R
270R 270R
3260
+A
1K L 3305
2206
5K6
47u
3201 3307
33K
7259
BC847B
3261
R 3304
10K
7254
7269
5K6
BC847B
BC847B
3205
3306
4K7
10K
3329
100K
STANDBY
9201
3287
10K
(OPTION)
(S/C OF SPEAKER)
STB
7304
2322 BC847B 2332
(OPTION)
100n 220n
P_EN
3288
6302
7305
10K
BC847B
2326 3351
1N4148
3335
220K
2323
470K 10u
6304
100n
3324
1N4148
470K
(OPTION)
"PLOP" SUPPRESS
6 7 8 9 10
11 12 13 14 15
6204 3210
PWRDWN
1N4148 4K7
6211
2205
47n
BZX79-B6V8
T312
0001
C-PAD
8V REGULATION
2204
BC327-25
4m7
0002
3264
3203
C-PAD
47K
4R7
3250
4R7
3256
0003
4R7
GND
A_GND D_GND
3257 C-PAD
4R7
<--- 597mA
3258
4R7
3263
3251
4R7
3K3
7267
VS
7252 BC857B
BC847C
3340
1K
3262
3265 6213
3345
560R
560R
12K
1N4148
ALC_S
6212
3344
12K
1N4148
3342
1K
7300
AN7125P 1
VCC
OUT1+ 2 Left +
(OPTION)
6 IN1 GND1 3
3309
OUT1- 4 Left -
10K
2303
4K7 1n
5 STB GND
STB
VREF
9 MUTE
3311
MUTE
A_GND
10K
T330 10
OUT2- Right -
(OPTION)
8 IN2 GND2 11
OUT2+ 12 Right +
2302
GND
1n T329
7
A_GND
A_GND
5302
3330 P_EN
P_EN
360n
100R
POWER STAGE
3310
3314
3331 2324
PROTECTION 10K
220K 3321 3320
10u 2R2
22K
22K
3327 5300
3308
360n
47K
10K
P_EN
3312
2R2
7301 7302
BC857B BC857B
2256
47u
2318
2319
680p
680p
ALC FOR UBII
3332
7303 ALC
BC847B 8K2
3328
47K
2325
10u
7270
BC847B
A_GND
. . . V DC VOLTAGES MEASURED IN TUNER MODE
V EVM UNLESS STATET OTHERWISE (230V MAINS SUPPLY)
11 12 13 14 15
11 - 2
16 17 18 19 20
1201
EH-S
1
To / From
1203
2
Transformer
To 1201
3.15A
19374
D3SBA20
2200 2202
100n 100n
6200
2201 2203
100n 100n
To 1201
EH-S
1202
1204
TO 1202
To / From
3
3.15A 19374
Battery &
3
2
Switch
MAIN BATTERIES
2
1
1
ALC FOR SOUND IC (TDA7468D)
OPTION
3341
1K
2331
Left +
3347
1K 47u
2330
3346
1K 47u
Right -
3343
1K
Left +
5301
360n
2305
220n
3313
2R2
5303
360n
Left -
3315
2R2
2307
T319
220n
3211
T320
180R
T321
HP_GND
HP_GND T322
3212
T323
180R
Right -
2306
220n
Right +
T315
2304
1304
2309 2313 2315
220n EH-S
47n
Left +
15u 15u
8
7
Left -
6
T316
2317
Left +
5
47u
4
T317
3
Right -
2316
2310
47n 2
6303 2312 2314
Right -
47u
BAV70
Right + 1
3318
3319 15u 15u
1K T318
1K
16 17 18 19 20
21 22 23 0001 B13 5303 I16
0002 C13 6200 C16
0003 C13 6202 I5
1201 A18 6204 A13
1202 D18 6205 J4
1203 B18 6206 J5
1204 D16 6208 K4
A
1302 I21 6211 A11
1304 L21 6212 F15
2200 B16 6213 F15
2201 C16 6252 D10
/ 00 VERSION
2202 B17 6257 D5
AC 220-240V
2203 C17 6301 N5
/ 17 VERSION 2204 B14 6302 N6
AC 110-120V 2205 A12 6303 N16
2206 H6 6304 O7
B
/ LATIN AMERICA 2207 I3 7250 D10
AC 127V 2208 I4 7252 E10
2209 K3 7253 B10
MAINS
OR 2210 K3 7254 J8
2250 F9 7257 C6
/ 01 VERSION
VOLTAGE SELECT 2251 E4 7258 D6
AC220-240V
2252 D9 7259 I7
2253 E10 7263 E6
C
2254 D4 7264 C5
AC110-120V
2256 L11 7265 J3
2302 J11 7267 E11
2303 I11 7268 E7
2304 L16 7269 J5
2305 H16 7270 N11
+
- 2306 K16 7300 H12
2307 J16 7301 L12
D
2309 L19 7302 L14
2310 N19 7303 M12
R20x8
2312 N19 7304 M6
2313 L19 7305 N6
2314 N20 9201 L10
2315 L20 9304 N4
2316 N17 T300 C3
2317 M17 T301 C3
E 2318 M14 T302 C3
2319 M12 T303 C3
2320 N2 T304 D3
2322 N6 T305 D3
2323 O6 T306 D3
2324 K11 T307 D3
2325 N15 T308 E3
2326 O8 T309 D3
2330 F17 T310 E3
F
2331 F17 T311 E3
2332 N9 T312 B13
3200 I3 T315 L18
3201 I6 T316 M18
3202 B10 T317 M18
3203 C11 T318 N18
3204 C10 T319 J21
3205 J6 T320 J21
G
3209 K4 T321 J21
3210 A14 T322 J21
3211 J18 T323 J21
3212 J18 T329 J12
3250 C11 T330 I11
3251 D11 T331 K4
3252 E9 T332 E3
3253 F9
H 3254 B6
3255 F10
3256 C11
3257 D11
3258 D11
3259 I3
3260 H6
3261 I6
3262 F11
I
3263 D11
3264 C11
3265 F11
1302
3266 C7
EH-S
3270 C7
3271 D7
LEFT
5 3272 J4
LEFT 3273 D7
4 J
3276 F4
HP_GND To / From
3277 D4
3
Headphone socket board
3278 J5
RIGHT
2 3280 F6
RIGHT 3281 F6
1
3282 B10
3283 K3
3286 I4
K 3287 L10
3288 N10
3291 A10
3304 J10
3305 H10
3306 J10
3307 I10
3308 L15
3309 H15
L
3310 K15
3311 I15
3312 L15
3313 I16
+ 3314 K15
Left Woofer 8 OHM
- 3315 I16
3318 N16
3319 N17
Left Tweeter 6 OHM M
3320 K14
3321 K12
3323 N2
+
3324 O8
Right Tweeter 6 OHM
-
3325 N5
3326 N5
3327 L13
Right Woofer 8 OHM
3328 N13
N 3329 K10
3330 K11
SPEAKER BOX 3331 K10
3332 M15
3335 O7
3336 O5
3340 F15
3341 F16
3342 G15
O
3343 G16
3344 F14
3345 F14
3346 F16
3347 F16
3348 E4
3349 C10
3350 F10
P
3351 O10
4301 N2
5300 L15
5301 H16
5302 K15
21 22 23