Philips MCW770 Service Manual page 23

FRONT BOARD
1 2 3
4,9V +D 4,9V +D
Grid Buffer
-30,6V -30,6V
7400 7401
BC847B BC847B
-30,8V -30,8V
A
-33V!
D D
-33V! -33V!
3426 10K
-0,6V USB_Host_Pwr
3446 10K
B
TestOK
3538 10K
RS_232
F479
-0,6V
3540 10K
TestOK TuRdsData
3541 10K
RS_232
LedShStr
-0,5V 3542 10K
F480
LedShData
3543 10K
F481
LedShClk
3544 10K
C
F482
LedEnable
3545 10K
D
F483
-0,5V
F484
TuRdsData
1401
1
LedShStr
FREQUENCY SHIFT
-0,2V
(for search tuning)
CST
0V
12M
BC847BW 2
0V 4K7
0,7V
7408
D D
3547
D
4,2V
D
LedShData
LedShClk
D
4,2V
RESET
3
Tray_Reset
Tray_IIC_SDA
4,2V
uP_Data
E
LedEnable
uP_Clk
MpOscShiftTu
3,6V
uP_Frame
IR EYE
+uP
100R
F476
3481
7405
TSOP4836ZC1
4,7V 3
5,3V
VS
3500
4,7V 1
OUT
F 1K0
F477
D
2
GND
D D
RDS DECODER
for /22 only
G
7407
RESET
SAA6581T
F433
4 57 Khz
MPX
BANDPASS
D (8th ORDER)
8 SCOUT
7
CIN
4,8V CLOCKED
D
COMP
H 3465
7404
BC847BW 15 TCON
0V
220K
TEST
9 MODE
0V
CTRL
D D D
D
I
# for provision only
1 2 3
7-1
4 5 6
-25,8V F1
BZX79-C5V6 22K
58 53 52 51 50 49 48
-33,5V -33V! F475 5401
-25,8V
6400 3401
F473
D 2u7
F2
-25,8V
D
3444 F478
-0,5V 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66
1K0
3447
3,4V
PE7
81
3449 470R
-0,8V
PF0 VFT - DRIVER VFT - DRIVER
82
1K5
3451
4,7
PE PD
PF1
83
1K5
3453
4,7
PF2
84
1K5 3455
4,7
VFT - DRIVER - CIRCUIT
PF3
85
1K5
1K0 3457
4,6
PF4
86
-33V! 5403
ADRESS / DATA - BUS
-33,5V
VKK
3 87
2u7 7403
4,8V
VDD-CPU TMP88CU77ZF
88
+uP
2,2V
XIN
89
VSS-CPU
90
D
CPU
D
1,7V
XOUT
91
4,8V
RESET
92
2,2V
15p 2420
P21
93
CLOCK OSC.
RAM
2,5V
P22
15p 2423
94
TEST
D
95
3471
2,3V
P20
96
470R
3474
2,2V
P00
P0
97
100R 3477
4,4V
P01 I/O P1 P3
98
100R
3479
4,3V
P02 3-STATE 3-STATE
99
100R
3480 I/O I/O
4,5V
P03
100
100R
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
F485
3501
RC6
1K0
10K
+D
3537
D
F434
3442 47R
+D 4,9V
2451
100n 2431
F436
10u 16V F435
D 5 12 D
+uP +uP
VDDA VDDD
4,8V 4,8V
POW SUPPL 3 50V 2u2
VREF
GNDK2
&
2437 4,8V
RESET
SYNC 10
RDCL 16 3529 1K0
VSSA
RDS/RBDS
3530
RDDA 2
DEM F438 F437
1K0
OSC SIGNAL
QUAL 1
& QUALITY
4,8V
CLK DET
VSSA VSSD D D D D
13 14 6 11
D D 3531, 3532 for non-RDS versions
/21 and /37 only
4,8V
3533
D
220K
HC-49/U-S
4M332
3651
1407
220R
4 5 6
7 8 9
7402
8 8 8 8 8 8
14-BT-82GNK
47 46 45 44 43 42 41 40 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6
+uP 4,8V
65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
VDD-VFT
3448
50
-27,6V
P81
220R
3450
49 -33V
VFT - DRIVER VFT - DRIVER P80
220R
3452
48 -33V
P9 P8
P77
220R
3454
47 -22,2V
P76
220R 3456
46 -30,6V
P75
220R
3458
45 -30,6V
P74
220R
3459
44
-30,6V
P73
3460 220R
43 -30,6V
P72
220R
3462
42
-30,6V
P71
220R
3463
41
-30,6V
P70
220R
3464
40 -30,6V
P67
220R
3466
39 -30,6V
P66
220R
3468
38 -30,6V
P65
220R
3469
ROM 37
-30,6V
P64
220R
3470
36 -30,6V
P63
220R
3472
35 -30,6V
P62
220R
3475
34
-30,6V
P61
3478 1K0
33 -30,6V
P4 P5 P60
ANALOG IN ANALOG IN 1K0
32
4,8V
3-STATE 3-STATE VDD-I|O +uP
I/O I/O
31
VAREF +uP 4,8V
VASS
D
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
D D
D
GNDK0 GNDK2
GNDK1
3517
+uP
10K
3519
+uP
10K
VERSION
F439
DETECTION 100R
(assembled, but
+uP
not used by SW) 3522
+C 2432 2433
100n 47p 2436
8 4,8V
1
VCC
E0
2438 47p
+C
2
7406
E1 47p 2439
M24C04
3 5
E2 SDA 2440 47p
D
4,1V
6
SCL
EEPROM 47p
D
4,5V
7
WC_
VSS
4
D D
GNDK2
to Wireless Module
("WessLi" board 1305)
not used
CDC KEY BOARD TOP
F440 F441
3652 3653 3654 3655 3656
270R 390R 560R 820R 1K2
7 8 9
7-1
10 11 12
Key0, Key1, JogVol_A, JogVol_B,
LedShStr, LedShData, LedShClk, LedEnable
1
5402 F474
-25,8V
2u7
Use service testprogram: QUARTZ TEST
+D
oscillator frequencies can be measured at this point.
D
Tu_Stereo
Tu_Clk
Tu_Data
2404
G2
TuCE
+D
180p
Tu_Enable/MPX
2405
G3
180p
P27 Rectifier
2410
G4 Spectrum Analyzer
D D D D
P28
180p
6450 2472 F429
2411
P29 G5
1N4148 1u0 50V
180p F430 3657
PowerDown
P30
2412
G6
680K
Standby
G2
180p
D D D
2413
G3 G7
180p
G4
2414 F428
G8 SA
G5
180p
2416
G9 D D D
G6
180p
G7
2418
G10
G8
180p
AmNTC typ. 4,5V at 22˚C transformer temperature
2419
G11
G9
180p
G10
2422
IIC_DATA
G12
G11
180p
IIC_CLK
2424
G13
G12
+5V6_ECO
5,6V_ECO in Standby only
180p
5,6V
G13
+5V6
5,6V
G1X
6406
5404 3476
+D
4,9V
2u7
G14X
2R2
D 1N4003
5400
-33V!
2u7
-33V
D
F1
3549
F2
3482 3R3
Tray_IRQ
470R
Tray_IIC_SCL
Tray_IIC_SDA
3516
uP_Data
470R
uP_Clk
3520
uP_Frame
470R
Tray_Reset
F471 5405
4,8V +C
2u7
+D
4,9V
F472
+uP
4,8V
3524
4K7
3526
4K7
D
D PROTECTION
CIRCUIT
0V
4,8V
+D
0V 7410
BC337-40
0V
D D
F442 F443 F444 F445 F446 F447 F448
EVM
V
10 11 12
13
1400 B13 3454 C9 6407 E1
1401 C3 3455 C4 6408 G13
1402 D4 3456 C9 6409 G13
1403 D13 3457 C4 6410 F1
1404 H6 3458 C9 6411 B2
1405 H9 3459 C9 6412 C2
to/from drawing 1406 I9 3460 C9 6413 D2
1407 I4 3461 H2 6414 E2
1450 I6 3462 D9 6415 E2
1451 I7 3463 D9 6416 G1
A
1452 I7 3464 D9 6417 G1
1454 I7 3465 H1 6418 H1
1456 I8 3466 D9 6419 I1
1458 I8 3467 H1 6420 G11
f
1460 I9 3468 D9 6450 C11
o
2400 A1 3469 D9 7400 A1
2401 A2 3470 D9
7401 A2
2402 A5 3471 E4 7402 A10
2403 A10 3472 E9 7403 C5
stereo /mono
1400
2404 B10 3473 E11 7404 H2
3425 0,5V/4,8V
2405 B10 3474 E3 7405 F3
1
1K0 2406 B12 3475 E9 7406 H8
3427 F465
0,5V
2407 B12 3476 E13 7407 G3
2
1K0 B
3443 F466 2408 B12 3477 E4 7408 D3
0,2V
2409 B13 3478 E9 7410 H12
3
1K0 F467
3445 2410 B10 3479 E3 C401H13
0,5V
4 2411 C10 3480 E4 F428 C11
1K0 F468
2412 C10 3481 F2 F429 C12
5
D 2413 C10 3482 F12 F430 C12
SAin
7,3V
2414 C10 3483 F3 F433 G2
6
F469 2415 H2 3484 F4 F434 G4
5,2V
2416 D10 3485 F5 F435 G6
7
2417 H1 3486 F5 F436 G6
8 2418 D10 3487 F5 F437 H6
LOW_PWR_CTRL
2419 D10 3488 F5 F438 H6
4,3V
9 2420 D4 3489 F6 F439 G8
F470 C
2421 H2 3490 F6 F440 I9
2422 D10 3491 F6 F441 I9
2423 D4 3492 F7 F442 I10
2424 D10 3493 F7 F443 I10
2425 E12 3494 F7 F444 I10
2426 F2 3495 F7 F445 I10
2427 G12 3496 F8 F446 I10
2428 G13 3497 F8 F447 I10
2429 F3 3499 F13 F448 I10
2430 F7 3500 F3 F449 D13
2431 G4 3501 F4 F450 D13
1403
F449 2432 G8 3502 F5 F451 D13
4,5V 1
D 2433 G9 3503 F5 F452 E13
2434 G2 3504 F5 F453 E13
4,1V 2
F450
2435 G3 3505 F6 F454 E13
D
4,5V 2436 G9 3506 F6 F455 E13
3
2437 H5 3507 F6 F456 E13
F451
4,5V 4
2438 G9 3508 F6 F457 E13
2439 H9 3509 F7 F458 F13
F452
+5V6_CON 5
2440 H9 3510 F7 F459 F13
D
2441 H3 3512 F7 F460 F13
5,6V 6
2442 H5 3513 F8 F461 F13
F453
2443 H5 3514 F8 F462 F13
5,6V 7
2444 I3 3515 F13 F463 F13
F454 5,6V 8 2445 I4 3516 F13 F464 G13
E
2446 D2 3517 F8 F465 B13
9
-VKK F455 -33,5V 2447 C3 3518 F13 F466 B13
3550 2448 D3 3519 F9 F467 B13
F456 -25,8V 10
2449 D3 3520 F13 F468 B13
2450 C12 3521 G13 F469 C13
3R3
F457 -25,8V 11
2451 G4 3522 G8 F470 C13
1,9V 12 2472 C11 3523 G8 F471 G12
F458
2474 C11 3524 G11 F472 G12
3499
13
F459 4,5V 3400 A5 3525 G8 F473 A5
3401 A5 3526 G11 F474 A10
470R
14
3402 A5 3527 H5 F475 A5
D
3403 A1 3528 H5 F476 E3
3515
1,9V 15
F
3404 A2 3529 H5 F477 F3
F460
470R
3405 A2 3530 H5 F478 B4
16
F461 3,7V
3406 A3 3531 H5 F479 B2
3518
3408 A12 3532 H5 F480 C2
F462 3,7V 17
3409 A12 3533 I4 F481 C2
470R
F463 3,5V 18
3410 A12 3534 I4 F482 C2
3411 A13 3537 F4 F483 C2
3521
19
F464 0,2V
3412 B5 3538 B3 F484 C2
470R 3413 B5 3540 B3 F485 F5
uP_RESET
3414 B5 3541 C3 F486 F7
3415 B6 3542 C3 F487 F8
3416 B6 3543 C3 F488 F8
3417 B6 3544 C3
G
3418 B6 3545 C3
5406
6408 5,6V (in Stby only)
4,8V
3419 B7 3547 D2
+5V6_ECO
2u7 3420 B7 3549 E13
1N4148
6409 3421 B7 3550 E13
5,6V
+5V6
3422 B8 3566 C11
1N4148 3423 B8 3572 C11
3424 B8 3573 C11
D
3425 B13 3650 H6
3426 B3 3651 I6
3427 B13 3652 I7
3428 B5 3653 I7
3429 B5 3654 I8
H 3430 B5 3655 I8
3431 B5 3656 I9
3432 B6 3657 C12
3433 B6 3658 C12
C401
3434 B6 3659 C12
3435 B7 3660 H2
C-PAD
3436 B7 3661 H6
3437 B7 3662 G7
3438 B7 3663 H7
ESD
3439 B8 3710 H11
3440 B8 3711 H11
3441 B8 5400 E12
3442 G4 5401 A6
3443 B13 5402 A10
I
3444 B4 5403 C4
...V DC voltages 3445 B13 5404 E12
3446 B3 5405 G12
measured in TUNER mode
3447 B4 5406 G13
3448 B9 6400 A4
3449 C3 6402 B1
3450 C9 6403 C1
Front board MCW770, drawing 1, 170704 3451 C4 6404 C1
3452 C9 6405 D1
3453 C3 6406 E12
13