Philips MC45, МС-50 Service Manual
Service
Service
MC-45 & MC-50
A02 - 154
Service
Product Service Group CE Audio
Service Information
Already published Service Informations: A01-164 3139 785 30023
CHANGES DURING PRODUCTION
FRONT CONTROL BOARD
* From production wk204 onwards the following changes
are made to improve brightness & reliability of the Blue
LED.
3601 change to 33R 5% 0,062W 4822 051 30339
3602 change to 33R 5% 0,062W 4822 051 30339
ETF TAPE MODULE
* From production wk209 onwards a new ETF8 SD Tape
Module was introduced replacing the existing ETF6-LE
Tape Module. Due to this change the undermentioned
changes needs to be implemented together:
On the Front Board
7102 is change to 9965 000 11077 TMP88PU74YF.
This is the OTP version of new IC which can be recog-
nized by the "MC50S52881" printed on the body of the IC.
for other set application. Because the existing module
has dedicated circuit diagram for this set, no changes is
required on the circuit. Enclosed is the new pt.5 layout.
COMBI BOARD
* From production wk202 onwards a new pc board pt. 2 is
introduced to improve GSM immunity & cater for other set
application. Due to this new board the following changes
are made:
2542 change to 1nF 10% 50V 4822 122 33197
2543 change to 1nF 10% 50V 4822 122 33197
Add 2650 220pF 50V 4822 126 13883
Add 3673 470R 5% 0,1W 4822 051 30471
Add 3674 470R 5% 0,1W 4822 051 30471
Add 4549 0R Jumper 0805 4822 051 20008
Add 5511 Ind. fxd 100MHz 600R 2422 549 44607
Add 5512 Ind. fxd 100MHz 600R 2422 549 44607
The new pt.2 layout & affected circuitry are enclosed for
reference.
On the Center Unit (Refer to Set Exploded view)
Pos 198 is change to 3139 114 73930 Door Cassette
A new Chapter of the ETF8 Tape Module is enclosed. It
can be recognized by the the printing mark
3139_113_34552_01 on the pc board.
3DTC MODULE
* From production wk205 onwards a new pc board pt. 5 is
introduced due to the addition of a HF detection circuitry
REGULATOR BOARD
* From production wk212 onwards a new pc board pt. 4 to
improve MW/LW sensitivity & noise for other application
sharing the pc board. Added on the board are compo-
nents 2417 and 2420.
The silkscreen printing on the pc board is later changed
to pt. 5 to correct item 3433 & 3434 interchange error.
The new pt.5 layout & circuitry is enclosed for reference.
3139 785 300612002 - 04 - 26
REGULATOR BOARD
REGULATOR CIRCUIT
A
B
C
D
E
F
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+12V_M
3419
3411
470R
t
47u
FOR CDR ONLY
10.35V
3420
2322640
2406
5V_VCD
11.3V
330R
6406
BZX79-C3V9
1K
100u
VCD_GND
3421
7409
BC327-25
6.34V
2407
5R6
11V
100u
1400
1
2
EH-B
For Fan
EH-B
1401
1
2
3
4
5
6
7
8
9
10
11
TO COMBI
TO CDR MODULE
6
5
4
3
2
1
EH-B
1403
3
1
3439
7419
BC547B
GND_M
EH-B
1402
1
2
3
4
5
6
7
8
9
#
9406
2
7420
STP16NE06
1K
3438
10K
3440
5V_VCD
14.5V
GND_M
VCD_GND
5V_VCD
+12V_M
3436
10K
100K
7421
BC547B
+12V_A
LPC
+12V_M
+A
+A/2
+5V6
VCD_ON
T1A
1171
GND_A
5V6_GND
VCD_GND
T2A5 for CDR
*
~
+A
3437
100K
9172
9174
3423
22K
3424
470K
BC547B
VCD_ON
CDR ONLY
VCD_ON
7413
BDW94C
3425
7414
23
1
2K2
5.7V
2411
5V6_GND
3422
~
2412
10K
3426
47u
9404
100K
1u
+5V6
7415
BC547B
LPC
5V
2413
29V
7401
BC547B
10u
*
5V6_GND
27.3V
6407
3427
3428
+A
1K
3405
3403
4.2V
2K2
3404
6400
1N4148
6401
1N4148
GND_A
9405
~
BZX55-B4V7
100R
150R
270R
27.9V
7402
BC557B
14.1V
2409
7403
BDX53BFI
12.4V
2400
2u2
3406
1K
2403
7417
1
IN OUT
GND
L7805
10u
6409
2410
100n
For NON CDR
11.3V
FOR NON-LPS VERSION ONLY
15K
3407
6402
BZX79-C15
0.65V
4u7
2
2404
3
0.7V
1N4148
3409
100n
5.7V
5V6_GND
3K3
2408
1.4V
+5V6
+A
3410
100n
9401
3412
7407
BC547B
10K
7406
BC547B
3430
2420
1K
3413
6404
10K
BC547B
10u
BD438
1K
1N4148
7411
7405
GND_M
1K
3414
9.91V
7408
BC547B
7410
BD438
3431
3432
180R
180R
2417
1n
7412
BC547B
VCD_GND
PROVISION
#
FOR CDR ONLY
*
FOR NON-CDR ONLY
~
+12V_A
2402
GND_A
3415
68R
1N4148
3433
47u
6412
10K
6405
3416
3417
6413
3434
3435
BZX79-B10
10u
2405
120R
120R
BZX79-B3V9
2415
120R
120R
3418
2416
10u
A
B
C
D
E
F
1171 C2
1400 B9
1401 A1
1402 A1
1403 E1
2400 B5
2402 A7
2403 C5
2404 C5
2405 B7
2406 B8
2407 B8
2408 D5
2409 E4
2410 E5
2411 C3
2412 F3
2413 E3
2415 E7
2416 D8
2417 D6
2420 E6
3403 A4
3404 B4
3405 A4
3406 B5
3407 B5
3409 C5
3410 B6
3411 B8
3412 B6
3413 B6
3414 B6
3415 B7
3416 B7
3417 C7
3418 B8
3419 A8
3420 B8
3421 A8
3422 D3
3423 D2
3424 E2
3425 E3
3426 E3
3427 E4
3428 F4
3430 D6
3431 D6
3432 D6
3433 D7
3434 E7
3435 E7
3436 E2
3437 F2
3438 F1
3439 F1
3440 F1
6400 B4
6401 C4
6402 B5
6404 C6
6405 B7
6406 B8
6407 E4
6409 E5
6412 D7
6413 D7
7401 B4
7402 B4
7403 A4
7405 A6
7406 C6
7407 B6
7408 B7
7409 B9
7410 D7
7411 E6
7412 E7
7413 D3
7414 F3
7415 F3
7417 D5
7419 F1
7420 E1
7421 F2
9172 D2
9174 D2
9401 A6
9404 D3
9405 D4
9406 E1
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COMBI CHIP LAYOUT
COMBI COMPONENT LAYOUT
COMBI CIRCUIT - POWER AMPLIFIER PART
A
B
C
D
E
0020 A1
0023 D1
1123 A2
1200-A E9
1200-B E9
1221 B1
1222 D1
1224 D1
1225 B1
2202 E5
2203 E5
2204 E8
2205 D8
2206 E8
2207 E8
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GND_D
DIPMATE
0020
1
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
11
1225
EH-B
1222
GND_D
GND_+A_2
FE-BT-VK-N
-VKK
F1
F2
POWER_DOWN
NTC
LOW_POWER_CONTROL
LOW_PWR_SUPPLY
EH-B
1224
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
FE-BT-VK-N
1221
1
2
3
4
5
6
7
DIPMATE
0023
1
2
3
4
5
6
7
8
9
10
11
12
(D.C. Voltages during active play)
1123
RT-01T
1
GND_A
DVD_ON
2208 E8
2209 D8
2210 B9
2211 B9
2212 C8
GND_G
GND_P
+A
+A_2
GND_A
+12V_A
LOW_POWER_CONTROL
+12V_M
+A
+A_2
GND_D
+5V6
GND_D
+5V_VCD
9630
VCD_ON
CDR_ON
2213 C8
2214 C6
2215 C5
2216 D5
2217 A9
GND_D
2648 E6
2649 E6
2650 E8
3202 E4
3203 D4
3204 E4
3205 E4
3206 E7
3207 D7
3208 E7
GND_M
3209 D7
3210 E8
3211 D8
3212 E8
3213 D8
GND_+A_2
LEFT
RIGHT
GND_A
3203
82K
3202
82K
3214 B8
3215 B8
3216 B9
3217 B8
3218 B9
3205
3204
5K6
5K6
AMP_IC
2203
2202
3219 C9
3220 C8
3221 D7
3222 E8
3223 C6
22p
22p
3224 C5
3225 D6
3226 D6
3227 D7
3228 A7
BZX79-C22
6205
4u7
3224
2215
GND_G
2216
4u7
GND_G
IN1
6
STB
5
MUTE
9
IN2
8
330R
STB
MUTE
GND_A
3229 A8
3232 A8
3233 A8
3234 A9
5200 E8
BYV28-200/20
7204
BDW94C
28V
7205
BC547B
6207
BZX79-B4V7
7200 AN7125
1
VCC
VREF
GND
7
+A_2
6204
HEATSINK
14V
9V
3225
GND_G
OUT1+
GND1
OUT1-
OUT2-
GND2
OUT2+
2648
10n
1K8
3226
2
3
4
10
11
12
5201 D8
5202 E8
5203 D8
6200 E7
6201 E7
3223
2214
8.3V
1K8
3227
GND_D
2649
10n
+A
28V
470R
560p
6206
1N4148
1K8
GND_D
6202 E7
6203 E7
6204 B6
6205 B5
6206 C7
+A
6208
28V
BZX79-B18
3207
3221
470R
3209
6201
1N4003
6200
10K
3208
10K
3206
6207 C6
6208 C7
6209 A9
7200 D6
7201 B8
3228
100K
10K
10K
62031N4003
1N4003
6202
27.3V
3229
3214
3217
22K
7.5V
BC557B
2212
100n
3211
2R2
5201
5203
3213
2R2
2650 220p
3222
4K7
GND_P
3212
2R2
5202
5200
1N4003
360n
3210
2R2
7202 B8
7203 C8
7204 B6
7205 C6
7206 A8
BC557B
7206
220K
22K
7.5V
7.5V
7201
22u
2213
360n
360n
2207
GND_EMC
2206
360n
2204
3220
2209
47n
2205
220n
220n
47n
28V
3215
GND_D
2208
3232
10K
3233
10K
47K
BC557B
7202
7203
BC547B
47K
GND_P
220n
GND_D
220n
9630 E2
3234
7.5V
100K
GND_P
2210
GND_P
6209
AMP_ON
100n
2217
BZX79-B4V7
15K
3216
2211
22u
3218
150K
3219
100R
1200-B
4
3
2
1
1200-A
CLIP
100n
GND_P
AMP_IC
A
B
C
D
E
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