Block Diagram - Control Unit (Tuner Section) - Sony XES-Z50 Service Manual

XES-Z50
7-3. BLOCK DIAGRAM – CONTROL UNIT (TUNER Section) –
(ANTENNA)
MAIN
(FM/AM)
MAIN ANT
SUB (FM)
SUB ANT
41
05
FM
FM/AM
TUNER UNIT
AM
IC506
SWITCHING
2
4
SIGNAL METER
Q526
1
BUFFER
Q541
Q525
40 39 38 73 72 63 57 56 71 32 70 66
TUNER CONTROLLER
IC502(1/2)
8 9 30 26 52
RESET SIGNAL
X503 5 6
GENERATOR
8MHz
IC517
EEPROM
IC516
– 77 –
CN502
(1/2)
L-CH –1
L-CH
13
TO CD
CHANGER
R-CH 8
–2
R-CH
MUTE
Q605, 606
L-CH
MUTE CONTROL
SWITCH
Q607
R-CH
Q519
IC603
FM/AM SELECT
RELAY
RELAY DRIVE
Q609
AM B+
AM B+ SWITCH
FM/AM TUNER
Q536, 538
UNIT B+
AM ON 64
FM B+
AM B+ SWITCH
FM/AM TUNER
Q535, 537
UNIT B+
FM ON 65
TUNER
TUNER B+ SWITCH
CIRCUIT B+
Q528, 529
TU ON 61
B.U +5V
• Signal path.
: FM
: AM
MUTE
A
(Page 82)
TUNER B+
P.U +5V
– 78 –
XES-Z50