Read Sharp SD-EX100H (serv.man16) Service Manual online
SD-EX100H
– 58 –
WAVEFORMS OF 1-BIT CIRCUIT
T
2
1
2.00 V/div
500 ns/div
194.545465
µ
s
520 mV
2.00 V/div
AD IC Output
+ Side
- Side
5 V
Amplitude
from 0 to 5 V
from 0 to 5 V
1
2
2
2
1
2.00 V/div
500 ns/div
194.545465
µ
s
-12.30 V
2.00 V/div
AD IC NF IN
In partial pressure OUT, 4 to 7 V amplitude
of GND reference is observed.
In IC of 75 kohms, the reference is 2.5 V
because of VREF. Due to imaginary GND
of operational amplifier inside IC, the
waveform cannot be monitored.
This waveform is partial pressure OUT.
of GND reference is observed.
In IC of 75 kohms, the reference is 2.5 V
because of VREF. Due to imaginary GND
of operational amplifier inside IC, the
waveform cannot be monitored.
This waveform is partial pressure OUT.
3
4
T
2.00 V/div
50.0 ns/div
0.0 s
-12.30 V
2.00 V/div
LEVEL SHIFT OUT
DEAD TIME
ZOOM UP
Dead time is generated by level
shift input.
Leading edge is delayed at CR,
passing R at DI.
Set value: 20 -25 nsec
shift input.
Leading edge is delayed at CR,
passing R at DI.
Set value: 20 -25 nsec
5
6
6
T
10.0 V/div
500 ns/div
194.545465
µ
s
-12.3 V
10.0 V/div
+SIDE
+FETOUT
- SIDE
Waveforms before low-pass filters at both
ends of the speaker
H-bridge may be considered as BTL.
However, here and at the gate drive, dead
time is not observed; since bootstrap
operates based on output, DEAD TIME
part is in floating condition. The waveform
on the HI GH side shows that only the
booted voltage lowers.
ends of the speaker
H-bridge may be considered as BTL.
However, here and at the gate drive, dead
time is not observed; since bootstrap
operates based on output, DEAD TIME
part is in floating condition. The waveform
on the HI GH side shows that only the
booted voltage lowers.
2
1
11
12
12
– 59 –
SD-EX100H
WAVEFORMS OF CD CIRCUIT
IC704 5pin-6pin
Delay : 102.3ns
Hold off : MINIMUM
Hold off : MINIMUM
T
T
Stopped
CH1=1V
2000/09/18 17:25:20
DC 10:1
1ms/div
(1ms/div)
NORM:1MS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : AUTO
Type : EDGE CH1
Type : EDGE CH1
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
0div
Trigger Position To
-4div
+4div
DELAY
Trigger Knob
POSITION
=Offset=
Trigger
Position
-1.0
Position
-1.0
0
div
IC704
3pin-4pin
FO- FO+
3pin-4pin
FO- FO+
When reproducing
flawless disc
flawless disc
T
T
Stopped
CH1=1V
2000/09/18 17:18:51
DC 10:1
1ms/div
(1ms/div)
NORM:1MS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
1V
V/DIV
1V
T
T
Stopped
CH1=1V
2000/09/18 17:16:55
DC 10:1
500us/div
(500us/div)
NORM:2MS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 4K
Zoom : 4K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
1V
V/DIV
1V
IC704 5pin-6pin
T
IC702
41pin
DMO
41pin
DMO
IC704
28pin
SP+
28pin
SP+
IC704
27pin
SP-
27pin
SP-
Stopped
CH1=1V
2000/09/18 16:42:08
DC 10:1
CH2=1V
DC 10:1
CH3=5V
DC 10:1
500ms/div
(500ms/div)
NORM:2kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 4K
Zoom : 4K
Mode : SINGLE
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
=Offset=
T
When changing CD test
mode 2 3
mode 2 3
-1div
CH Position To
-3div
+1div
0div
+3div
CH3
Position
-
Position
-
3
.00div
T
IC702
34pin
TRO
34pin
TRO
IC704
3pin
FO-
3pin
FO-
IC704
4pin
FO+
4pin
FO+
Stopped
CH1=200mV
2000/09/18 15:14:35
DC 10:1
CH2=2V
DC 10:1
CH3=1V
DC 10:1
1s/div
(1s/div)
NORM:10kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
200mV
V/DIV
200mV
Normal operation
When closing cover
with no disc within
When closing cover
with no disc within
T
IC702
40pin
FMO
40pin
FMO
IC702
34pin
TRO
34pin
TRO
Stopped
CH1=200mV
2000/09/18 17:12:20
DC 10:1
CH2=1V
DC 10:1
100ms/div
(100ms/div)
NORM:10kS/s
1
2
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
200mV
V/DIV
200mV
During track jump
1 2
3 4
8
9
9
1
2
3 4
5
6
7
Flawed disc
Flawless disc
Figure 1
Figure 3
Figure 5
Figure 2
Figure 4
Figure 6
SD-EX100H
– 60 –
T
IC702
41pin
DMO
41pin
DMO
IC701
12pin
RFDC
12pin
RFDC
IC701
17pin
RFRP
17pin
RFRP
Stopped
CH1=1V
2000/09/18 16:45:07
DC 10:1
CH2=1V
DC 10:1
CH3=1V
DC 10:1
500ms/div
(500ms/div)
NORM:2kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 4K
Zoom : 4K
Mode : SINGLE
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
=Offset=
T
CH3
V/DIV
1V
V/DIV
1V
T
IC701
19pin
RFGO
19pin
RFGO
Stopped
CH1=500mV
2000/09/18 14:55:22
DC 10:1
500ms/div
(500ms/div)
NORM:200kS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.00V
CH2 : 0.00V
Main : 1K
Zoom : 400
Zoom : 400
Mode : SINGLE
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.000V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
Format
BMP
FileName
AutoFile
ON
OFF
To
TopMenu
TopMenu
=Offset=
When reproducing disc
T
T
IC701
15pin
FEO
15pin
FEO
IC704
3pin
FO-
3pin
FO-
IC704
4pin
FO+
4pin
FO+
Stopped
CH1=500mV
2000/09/18 15:29:21
DC 10:1
CH2=2V
DC 10:1
CH3=2V
DC 10:1
2ms/div
(2ms/div)
NORM:500kS/s
1
2
3
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : SINGLE
Type : EDGE CH2
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH2
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
CH1
CH3
CH4
EXT
LINE
=Offset=
CH2
Level
2.48V
Level
2.48V
T
When closing cover
with disc within
with disc within
CH2
T
IC701
11pin
TEO
11pin
TEO
IC701
17pin
RFRP
17pin
RFRP
Stopped
CH1=1V
2000/09/18 17:01:23
DC 10:1
CH2=1V
DC 10:1
2ms/div
(2ms/div)
NORM:500kS/s
1
2
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 5K
Zoom : 5K
Mode : SINGLE
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
CH2
CH3
CH4
EXT
LINE
=Offset=
CH1
Level
0.54V
Level
0.54V
T
During track jump
CH1
T
IC701
11pin
TEO
11pin
TEO
Stopped
CH1=200mV
2000/09/18 16:55:04
DC 10:1
5ms/div
(5ms/div)
NORM:200kS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.00V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 4K
Zoom : 4K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
1V
V/DIV
1V
T
In test mode 3
T
IC701
11pin
TEO
11pin
TEO
Stopped
CH1=200mV
2000/09/18 16:56:26
DC 10:1
5ms/div
(5ms/div)
NORM:200kS/s
1
=Record Length=
Smoothing : ON
CH1 : 0.000V
CH2 : 0.00V
CH2 : 0.00V
Main : 10K
Zoom : 4K
Zoom : 4K
Mode : AUTO
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
Type : EDGE CH1
Delay : 102.3ns
Hold off : MINIMUM
CH3 : 0.00V
CH4 : 0.00V
CH4 : 0.00V
BW : 20MHz
=Trigger=
=Filter=
VAR
CH1 V/DIV
CAL
=Offset=
CH1
V/DIV
200mV
V/DIV
200mV
T
Flawless disc
10
14
13
13
1
2
5
11
12
13
12
When changing CD test
mode 2 3
mode 2 3
When reproducing
Figure 7
Figure 9
Figure 11
Figure 8
Figure 10
Figure 12