Sony HCD-EC70 Service Manual page 38

HCD-EC70
• Waveforms
– MAIN Board –
– BD83S Board –
1
IC201 u; (RFACO) 1
IC801 w; (XOUT)
(CD PLAY mode)
0.5 to 1.3 Vp-p
5 V/DIV, 10 µ s/DIV
200 mV/DIV, 500 ns/DIV
2
IC201 <z/, (XTAO)
(CD PLAY mode)
3.3 Vp-p
59.1 ns
1 V/DIV, 20 ns/DIV
3
IC201 1 (LRCK)
(CD PLAY mode)
3.3 Vp-p
22.7 µ s
1 V/DIV, 10 µ s/DIV
4
IC201 5 (BCK)
(CD PLAY mode)
3.4 Vp-p
472 ns
1 V/DIV, 200 ns/DIV
HCD-EC70
– PANEL Board –
1
IC701 qd (X0A/P90)
1.8 Vp-p
13.3 µ s
30.5 µ s
1 V/DIV, 10 µ s/DIV
2
IC701 od (X0)
239 ns
1 V/DIV, 100 ns/DIV
• IC Block Diagrams
– BD83S Board –
2.3 Vp-p
2.9 Vp-p
IC402 BA5947FM-E2
28 27 26
1 2
38 38
IC203 BH18LB1WG-TR
VIN 1
VOLTAGE
GND 2
REFERENCE
THERMAL
PROTECTION
OVER CURRENT
PROTECTION
CONTROL
STBY 3
BLOCK
25 24 23 22 21 20 19 18
MUTING D
+ –
INTERFACE
INTERFACE
INTERFACE
D
VREF
3 4 5 6 7 8 9 10 11
5 VOUT
4 NC
17 16 15
D D D
LEVEL SHIFT
D D D
12 13 14