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Waveforms Of Cd Circuit - Sharp SM-SX1 Service Manual

1-bit amplifier
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1
• OUTR(+), OUTR(-)
• OUTL(+), OUTL(-)
Observe
each pair.
OUTR(+),
(OUTL(+))
OUTR(-),
(OUTL(-))
Figure 33-1
2
• RA5, RA7
• RA6, RA8
Observe
RA5
each pair.
(RA6)
RA7
(RA8)
Figure 33-2
3
• QA1, QA5
• QA2, QA6
• QA3, QA7
• QA4, QA8
QA2
Observe
(QA1, 3, 4)
each pair.
BASE
QA6
(QA5, 7, 8)
BASE
Figure 33-3
4
• QA1, QA5
• QA2, QA6
• QA3, QA7
• QA4, QA8
QA2
Observe
(QA1, 3, 4)
each pair.
EMITER
QA6
(QA5, 7, 8)
EMITER
Set -22V at GND for observation of
WAVEFORMS OF 1 BIT AMP. CIRCUIT
Figure 33-4
6
to
8
.
5
• QA1, QA5
• QA2, QA6
• QA3, QA7
• QA4, QA8
Observe
each pair.
QA1
(QA2, 3, 4)
COLECTOR
QA5
(QA6, 7, 8)
COLECTOR
6
Observe Lo and Hi of
ICA4 to 7 of each.
Lo
Hi
7
• QA9, QA11
• QA10, QA12
• QA13, QA15
• QA14, QA16
Observe
QA10
each pair.
(QA9,13,14)
GATE
QA12
(QA11,15,16)
GATE
8
Observe SW section
of Lch and Rch of each.
– 33 –
SM-SX1/SX1W
Figure 33-5
Figure 33-6
Figure 33-7
Figure 33-8

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