Electrical Checks - Sony ZS-BTY50 Service Manual

TUNER SECTION 0 dB = 1 V
[AM]
Setting:
Function: RADIO
Band: AM
Put the lead-wire
AM RF signal
antenna close to
generator
the unit.
32
ZS-BTY50
ZS-BTY52
ZS-BTY55
30% amplitude
JACK board
modulation by
i jack (J351)
400 Hz signal
Output level:
as low as possible
[FM]
Setting:
Function: RADIO
Band: FM
FM RF signal
generator
TUNER board
CL001
0.01 F ZS-BTY50
ZS-BTY52
ZS-BTY55
JACK board
75 kHz frequency
deviation by i
TUNER board
1 kHz signal
CL002 (GND)
Output level:
as low as possible
Note: Perform FM frequency coverage check after removing FM tele-
scopic antenna (ANT1).
no mark: US, CND, E92, MX models
(
AM FREQUENCY COVERAGE CHECK
Check that reading on level meter is the maximum
Confi rmation 531 (530) kHz
Confi rmation 1,602 (1,710) kHz
FM FREQUENCY COVERAGE CHECK
Check that reading on level meter is the maximum
Confi rmation 87.5 MHz
Confi rmation 108 MHz
• Abbreviation
AUS : Australian model
CND : Canadian model
E41 : 230V AC area in E model
E92 : 120V AC area in E model
MX : Mexican model
ZS-BTY50/BTY52/BTY55
SECTION 4

ELECTRICAL CHECKS

level meter
+
level meter
32
+
jack (J351)
): E41, AUS models
35 35
ZS-BTY50/BTY52/BTY55