Sharp VL-H860U

VL-H860U
VL-H880U
VL-H870U
VL-H875U
VL-H890U
12
7-5. HEAD AMP BLOCK DIAGRAM
Hi8MP 30mVp-p Hi8ME 30mVp-p
Signal waveform
Hi8MP 110mVp-p Hi8ME 150mVp-p
(10) TL35 (Pin (35) of P1)
(11) TL35 (Pin (35) of P1)
63 AV REC-H
PB REC
SC305 SC305 Q307 SC305 SC305 SC305
IC 301 REC/PB AMP IC
VCC
RECORDING AMPLIFIER CH-1
SC305 SC305 SC305 SC305
SC301 SC301
ROTALY ERASING HEAD VIDEO HEAD L (CH-2) VIDEO HEAD R (CH-1)
ROTALYTRANSFORMER
Q315
6 PB RF
64 H-SW-P 65 OVER-P
61 REC-Y 58 REC-C
8 AGC IN
10 PB Y FM
67
D.O. PULSE
4
ROT ERASE
BUF
VGC
11
3
Q315
2
30
9
28
9
7
5
32
4
FF30
Y AMP
AGC
DOC
PLAYBACK AMPLIFIER CH-2
RECORDING AMPLIFIER CH-1
ERASING OSCILLATOR SWITCH CH-2
ERASING OSCILLATOR
PLAYBACK AMPLIFIER CH-2
R339
24
27 13
a
a
1FE (S)
SC301
5L (S) (REC)
SC301
6L (F) (PB)
SC301
9R (S) (REC)
SC301
8R (F) (PB)
SC305
Q302
(10) (11)
35HOT
2FE (F)
18
23
BUF
14
17