Drum/Capstan Motor Drive - Sony DCR-PC100 Service Manual

For Schematic Diagram
• Refer to page 4-47 for printed wiring board.
• Refer to page 4-89 for waveforms.
2 3 4
1
MR-44 BOARD(2/5)
A
DRUM/CAPSTAN MOTOR
DRIVE(MD2 BLOCK)
-REF.NO.:10000 SERIES-
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
B
C
D
E
F
L2511
10uH
G
C2590
100p
CH
CAP_ON
CAP_ON
CAP_FWD C2546
CAP_FWD
0.01u
CAP_PWM
B
CAP_PWM
CAP_FG
CAP_FG
H
C2591
DRUM_ON
100p
CH
DRUM_FWD
DRUM_PWM
DRUM_FG
DRUM_PG
DRUM_MASTER_CLK
3
TO(1/5)
I
LM+
LM+
LM-
LM-
LM_LIM_ON
LM_LIM_ON
LM_LIM_DET
LM_LIM_DET
TAPE_LED_ON
TAPE_TOP
TAPE_END
J
SREEL_FG
TREEL_FG
REEL_PWSV
K
L
Q2507
2SD2216J-QR(K8).SO
R2582 1
4700 3.8
0.1 2
3
R2583
10k
M
16
5 6 7 8
44
TO(1/5)
2.8V
43
TO(1/5) UNREG
MT_GND
42 TO(1/5)
MT_4.8V
CAP_VS
1
TO(1/5)
CAP_VSC
DRUM_VS
2
TO(1/5)
DRUM_VSC
SIGNAL PATH
REC REC/PB
Drum speed servo
Drum phase servo
Drum servo (speed and phase)
Capstan speed servo
Capstan phase servo
Capstan servo (speed and phase)
R2556 R2559
120k 22k
± 5% ± 5%
R2557
560k
± 5%
48 47 46 45 44 43 42 41 40 39 38 37 36 35
C2551
0.1u
R2549
B
6800 1.3
END_IN 5 4
0
END_OUT
R2550 C2552
0.1u B
6800
1.3
TOP_IN
2.7
TOP_OUT
2.8
DRUM_ON
6
1.4
IC2503
DRUM_CLK
2.8
DRUM_F/R
DRUM/LOADING
MOTOR PREDRIVE
SU
IC2503
SV CXA8062R-EB
SW
2.8
Vdd 7
1.4
FGO
2.8
Vcc2
1.3
FGC
8
C2550
1.3 1
560p FG_IN
CH
1608
Vref
1 2 3 4 5 6 7 8 9 10 11 12 13 14
R2552 R2553
10k 10k
C2555
0.1u
C2553
R2554
B
1u 10k
R2546 R2551 1608
B
150k C2557
470
C2554 C2556
± 0.1u
0.5% 4700p 0.001u
B
B
B
R2547
10k
4-53
9 10 11 12 13
C2566
0.1u
B
C2500
4700p
B
9
R2505 C2565
10k 330p
CAP_PWM
CH
1608
R2507
10k
R2508
PB 10k
0.5
PWM_IN
C2507
0.001u
0.1
B
CLIM-
R2506
10k
±
0.5% 0.3
CLIM+
2.8
CAP_FWD
FRC
GND
2.8
CAP_ON
STBY
R2511
100k 9
NC
±
0.5%
1.4
CAP_FG
FG_OUT
R2517
1M
FG_IN+
19
34 33
LL1
0
LU2
5.0
LU1
R2564
5.0
1
1/10W
2012
VB1 C2561
5.0 4.7u
10V
R2565
VB3 1
5.0 1/10W
2012
YUW
1.8
3
YUV
1.8
YUU
1.8
YLW
0.7
2 YLV
0.7
YLU
0.7 R2566
100
YMW
1.2 R2567
100
YMV
1.2
R2568
100
YMU
1.2
C2562 C2563 C2564
0.01u 0.01u 0.01u
SOUT B B B
DRUM_Vs
2.4
15 16
R2509
XX
C2559
0.1u
B
R2510
3300
14 15 16 17
R2569
R2578
2200 C2573
47k
4.7u
R2530 R2572
16V R2579
33k 10k
TA 10k
A
R2587
2.6
C2582
C2572 22k
0.1u 0.1u
R2573
B B
470
0.6
2.3
C2575
0.1u R2585
B 3300
0.5
8 7 6 5 4 3 2 1
Q2505
C2583
UN9213J-(K8).SO
4.7u
16V
TA A
C2585
0.1u
Vsc
B
1.1
Vs
1.0
IC2504
C2586 0.1u B
U_OUT
0.6
10
CAPSTAN
V_OUT
MOTOR DRIVE
0.6
R2599
1 1/10W
RF
2012
IC2504 0.1
CXA8053Q-TE-B R2531
R2532 1 1/10W
W_OUT
0.6 1 1/10W 2012
2012
R2533
NC
1 1/10W
2012
RB
0.1
R2534 82
AGC
1.2
C2587
0.1u B
C2588
0.1u
B
C2589
20 21 22 23 24 25 26 27
0.01u
B
C2574
L2512
0.047u
10uH
B 1608
IC2505 TA8486F(EL)
0
UL2 UL1
5.0
0.1
UNLOAD UNLOAD
0 0.1
LM_Cs LM_VB
5.0
0.1
LOAD LOAD
0.1
0
L2
L1
5.0
1.2
W DRUM_Cs
0
0.7
W2 11 W1
2.4 1.8
DRUM_Vs DRUM_Vs
2.4
1.8
V1 U1
1.8
0
DRUM_Cs DRUM_Cs
1.2 0
V U
11
1.2
0.7
V2 U2
0.7
DRUM
IC2505
MOTOR
DRIVE
4-54
DCR-PC100/PC100E
18 19 20
2.8
Q2506
2SB624-T1BV4
FG2
FG1
CAP_U
CAP_V
UHE-
HE_GND
9
TO(1/5)
UHE+
VHE+
WHE+
VHE-
WHE-
CAP_W
R2571
22k
REEL_EVR
R2570 10
TO(4/5)
100k
CAP_EVR
HALL_VCC
TAPE_LED_A
R2586
TAPE_LED_K
100
TREEL+ 7 TO(1/5)
TREEL-
SREEL+
SREEL-
T_END
8
T_TOP TO(1/5)
C2567
R2574
1 1/10W
2012
R2575
1 1/10W
2012
R2576
1 1/10W
2012
R2577
1 1/10W
2012
DRUM_U
C2569 C2579
0.1u
0.1u
B
B
4
TO(1/5)
DRUM_W
C2576
0.1u
B
DRUM_V
LM_LOAD
5
TO(1/5)
LM_UNLOAD
C2577
4.7u
16V
TA
A
SENSER_VCC
6
FG TO(1/5)
PG

DRUM/CAPSTAN MOTOR DRIVE

MR-44 (2/5)