Sony SS-CEP50 - Page 30

HCD-EP50
2828
3.1 Vp-
p
13.5 µs
7 Vp-
p
13.5 µs
2.4 Vp-
p
139 ns
• Waveforms
– MAIN Board –
1 U2 w; (X2) 4 Q31 (Base) (REC (ISS 1) mode)
2 Q41 (Collector) (REC (ISS 1) mode)
5.1 Vp-
p
238 ns
– DISPLAY Board –
1 IC301 7 (X2)
110 Vp-
p
12.5 µs
2 Q41 (Collector) (REC (ISS 2) mode)
10 Vp-
p
13.5 µs
3 Q31 (Collector) (REC (ISS 1) mode)
3.1 Vp-
p
231 ns
2 IC305 qd (XI)
3.1 Vp-
p
12.5 µs
4 Q31 (Base) (REC (ISS 2) mode)
620 mVp-p
13.5 µs
5 Q31 (Emitter) (REC (ISS 1) mode)
620 mVp-p
12.5 µs
5 Q31 (Emitter) (REC (ISS 2) mode)
10 Vp-
p
12.5 µs
3 Q31 (Collector) (REC (ISS 2) mode)
• IC Block Diagrams
– MAIN Board –
U1 LA1837L
U2 LC72131M-TL-M
ALC
BUFF
AM
OSC
AM
MIX
AM
RF. AMP
AGC
IF
DET
S-CURVE
AM/FM
IF-
BUFF
REG
TUNING
DRIVE
GND
VCC
PILOT
DET
VCO
FF
STEREO
DRIVE
STEREO
SW
MUTE
FF FF
FM
IF
FM
DET
DECODER
ANT 1-BIRDIE
1
2 3 4 5 6 7 98
20 19 18 17 16
15141110
212223242527 262930
OSC.BUFF FM-SD.ADJ AM-OSC REG FM-AFC AM-RF-IN AGC MPX-IN FM-DET OUT AM-DET OUT OUT L OUT R AMP-IN L AMP-IN R AMP OUT R AMP OUT L
VCO-STOP
STEREO
AM/FM
AM. SD
FM. SD
AM. SD ADJ
IF-BUFF
MUTE
VCC
FM DET
FM-IN
AM-MIX
FM-IF
AM-IF
GND
TUNED
S-METER
FM
S-METER
AM
COMP
SD
AM
12
13
PHASE
DET
28
PHASE
DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
CCB
INTERFACE
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
17
18
1920
XOUT
VSS AOUT AIN
PD
VDD FMIN
AMIN
XIN
DO
CL
DI
CE
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH