Audio Linear (Al) - Philips VR120 Service Manual

Circuit diagrams and PWB layouts, Wiring diagram
7.9

Audio Linear (AL)

1 2
AIN1
AINF_AIN2
4601
AMLR
A
for Stereo only
AMLP
AFV
14AL
3624 3608
560R 120R
B 14VM1
I604
5610
4602
not used
10u
9412
14.4V
not used
11.5V
0.5V
12.2V
3631
C
I631
22R
0.9V
Erase
Oscillator
Switch
1.1V
7606
BC847BW
2.7V
GNDEO GNDEO
1V
I629
D
GNDEO
IREV
F614
10V
7608 0.5V
BC817-40
I636
E
GNDEO
0.1V Erase
Oscillator
F
..
OSCILLOGRAMS
CTL2
..V MEASURED IN PLAYBACK MODE
..V MEASURED IN RECORD MODE CTL1
AL 8920-3
1 2
VR120
3 4
F608
F609
F607
F605
I600 F601
3609
120R
3610
10K
2608
10n
GNDEO GNDEO
7602
I641
BC856B
1V
7.6V
3616
7604
7603
BC846B
4K7
BC327-40
PB
Switch
3623
7607
GNDAL
BC846B
2K2
BIAS Adj.
GNDAL
2615 I620 3625
330p 100K
3620
61
not used
I635 I611
2616
3626
47K 1n
GNDEO
5600
8 6
3630
GNDEO
10R
4
3
I615
2
GNDEO
7
1
GNDEO GNDEO
3 4
7. 72
5 6
I601
3602 2601
47K
100n
GNDAL1
GNDVS
for 2Scart only
63
2604
3606
27K 100n
I607
GNDVS
delete for Stereo
3.7V
80
62
delete for Stereo
I638
3644
4603
VREFA
F603
95
for stereo only
100K AGND
GND delete for stereo
2610 3.7V
GNDVS
I645
96
MUTE
3614 2612
10u
MTA(from PIN10)
18K
1u
97
3.8V 3.7V
2611
98
100n
0.9V
7.6V
99
AUTO
BIAS
3.7V
5601
100
GNDAL
AMP
100MHZ
1
3.7V
3.6V
1961
PH-B
1
F6102
2
3632 3627
12K 8K2
GNDAL
5605
1965
FE-BT-VK-N
F6501
3.8V
1
2 R/PB
Head
F6503
3.8V
3
F6504
4
TD1
Audio
F6505
0.1V
5 Erase
Head
F6506
2.6V
6
Sync
F6507
7
Head
60
5 6
Interconnections:
AF page 73 AL page 72
FV page 69 FOME page 78 I/O page 77
7 8 9
I603
3601
14AL
47K
GNDVS GNDVS
64
GNDVS
I602 2605
14AL
100n
2606
65
GNDAL1
3.7V
0V
100n
3.8V 3.7V 1.1V 3.7V
79 78 77 76 75 7.6V 2V
7004-A
IN2 AVCC
LA71595BM
IN1 AUDIO_LIN.
IN3
REC/EE
LINE ALC
AMP
PB
ALC
DET
VREFA
REC
BIAS
AMP
PB/EE
PB
EQ
+
REC:EP/LP SP LP,EP
-
PB:EP
2 3 4 5 6 7 8 9
3.7V 3.8V 3.8V 0.09V 1.8V 3.7V 3.7V 3.7V
3.6V 3.7V 3.6V 3.8V
1.2V 3.7V
2627
2621 3n9
I612
2631
10n
2n2
3636
390K
I639
NP0 2%
GNDEO
GNDAL
GNDAL GNDAL
I640
C603
GNDAL GNDVS
7 8 9
AIO1 page 66 AIO2 page 65 DE page 67 FM ST page 70 FM NIC-page 71
PS page 64 VPO page 76 VS page 75
0010 E1 4602 B1
0200 F2 4603 B6
1961 D5 5600 E3
1965 F5 5601 D6
2601 A6 5602 D7
14VM1 2602 A7 5603 D7
2603 A7 5604 D8
2604 A6 5605 E5
2605 A8 5610 B1
2606 B8 6601 B4
A
2607 B4 6602 C1
2608 B3 7004-A B9
2609 B2 7601 C1
2610 B6 7602 C3
2611 C6 7603 C2
14VM1
2612 C6 7604 C4
2613 C4 7606 D2
2614 D6 7607 C4
2615 D3 7608 E2
2616 E3 9412 C1
2617 E8 9601 B7
2618 F3 C601 F9
B
2619 F8 C602 F9
2620 E1 C603 F9
2621 E7 F601 B5
2623 E6 F603 B6
2624 C1 F605 A5
2625 F4 F607 A5
2626 D9 F608 A5
2627 E9 F609 A5
2628 F7 F6102 E5
MTA-CROT
2630 E9 F614 E2
( AIO1)
10
2631 E9 F6501 F5
2632 F8 F6503 F5
C
2633 F9 F6504 F5
71
3601 A8 F6505 F5
3602 A5 F6506 F5
3603 A8 F6507 F5
3604 A6 I600 B2
3605 A8 I601 A6
3606 A5 I602 A7
3607 A6 I603 A8
3608 B2 I604 B2
3609 B3 I605 B8
3610 B3 I606 C2
D
3611 B2 I607 A5
3612 C4 I608 C1
3613 B2 I609 C1
3614 C5 I610 D1
3615 C1 I611 E4
3616 C3 I612 E9
3617 C5 I613 E2
3619 C2 I614 E9
3620 D4 I615 F2
3621 C5 I616 E8
3622 C5 I617 E7
3623 C3 I618 E7
E
3624 B1 I620 D4
3625 D4 I622 F8
3626 E2 I629 D2
3627 E7 I630 F7
3629 E7 I631 C2
3630 E2 I632 C2
3631 C1 I633 D3
3632 E6 I635 E3
3633 F8 I636 E2
3634 D9 I637 B7
3635 E9 I638 B6
C601
F 3636 E7 I639 F9
3637 F7 I640 F9
3638 F2 I641 C4
GNDAIO
3639 D1 I642 F9
I642 3640 E9 I645 B5
C602
3641 E9
3642 F8
3644 B5
GNDAL1
4601 A2
VS_S page 74