Tuner Adjustment - Sanyo DCS-AVD8501 Service Manual

TUNER ADJUSTMENTS
• Use a plastic screw driver for adjustments.
• MODE : STEREO
• Speaker impedance : 4 ohm
• TUNING
FM : 87.5 - 108.0MHz (50kHz step)(AU,XE,UK)
87.9MHz - 107.9MHz(200kHz step)(US,CA,SS,AU)
AM : 522 - 1710kHz
522kHz - 1611kHz (9kHz step)(XE,UK)
520kHz - 1710kHz (10kHz step)(US,CA,SS,AU)
522kHZ - 1710kHz (9kHz step)(able to step change SS)
(At the same time to push Disc Stop SW and Memory SW)
US,CA,SS,AU Location
UK,XE Location
1.FM
Step Adjusting
Circuit
FM ANT.
1 IF Alignment
SG=66dB µV
2 Cover
voltage
3 Tracking Connect FM SG to FM Antenna Connect to VTVM
(SG=8dB µV)
2.AM
Step Adjusting
Circuit
1 Cover
voltage
2 Tracking Connect AM SG to
Test loop Ant.(SG=80dB µV)
(9kHz step)(AU)
FM SG IN
75 OHM
AM LOOP
ANT
FM SG IN
75 OHM
AM LOOP
ANT
Connection
Input Output
IC231 3,22pin
TP31, TP32
---
Connect Digital DC voltmeter
to TP11(H), TP12(E).
---
TP25(L) or TP26(R), TP27(E)
Connection
Input Output
---
Connect Digital DC voltmeter
toTP11(H), TP12(E).
---
Connect to VTVM
TP25(L) or TP26(R), TP27(E).
SG RF Level : 75 open Voltage dBµV
Antenna : 75 unbalanced Direct, Modulation
Dev. : MONO ±22.5kHz / ±STEREO 22.5kHz (MAIN)
Output Level : about 100mV at TP25,TP26,TP27
(IC202 22PIN)
L2031
L2033
CN201
J2035
J2036
TP12
L2034-a TP11
(GND)
(VT)
CN201
L2034-a
TP11
(GND)
(VT)
SG
Frequency
98.1MHz (US,CA,SS,AU)
98.0 MHz(XE,UK)
87.9 MHz(CA,US,SS,AU)
87.5 MHz (XE,UK)
107.9 MHz(CA,US,SS,AU)
108.0 MHz (XE,UK)
90.1MHz(US,CA,SS,AU)
90.0 MHz(XE,UK)
106.1MHz(CA,US)
106.0 MHz(XE,UK,SS,AU)
SG
Frequency
520kHz(US,CA)
522 kHz(XE,UK,SS,AU)
1710 kHz(US,CA,SS,AU)
1611kHz(XE,UK)
600kHz(US,CA,SS,AU)
603 kHz(XE,UK)
1400kHz(US,CA,SS,AU)
1404 kHz(XE,UK)
- 45 -
±6.75kHz(PILOT)
0V ALIGMENT
TP32 TP31
(IC202 3PIN)
T2001
R2046
J2077
TP26
R2047 TP27
(GND) (RCH)
0V ALIGNMENT
TP32 TP31
(IC202 22PIN) (IC202 3PIN)
T2001
R2046
J2036
J2084
J2037
TP12 TP27 TP26
(RCH)
(GND)
Set Adjustment
Position
--- T2001
L2033(US,CA,SS,AU)
Low
Comfirm(XE,UK)
High ---
Low L2031(US,CA,SS,AU)
High ---
Set Adjustment
Position
Low ---
High ---
Low L2034-a
High ---
: 1 kHz
J2081
J2083
TP25
(LCH)
J2088
J2090
TP25
(LCH)
Remark
0.0 +/- 0.05V
1.1+/- 0.1V(US,CA,SS,AU)
more than 0.8V(XE,UK)
about6.2V(US,CA,SS,AU)
less than9.0V(XE,UK)
Max.
Remark
more than 0.8V
less than 8.0V
Max.