Tuner Adjustments - Sanyo DC-DA70 Service Manual

TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• MODE : ST (Stereo)
• Speaker impedance : 6 ohm
• TUNING
FM : 87.5 - 108.0MHz
AM : 522 - 1710KHz
FM
I t e m
IF(0V) Alignment
Cover (Voltage)Alignment
Tracking (Voltage)Alignment
AM
I t e m
IF Alignment
Cover (Voltage)Alignment
Tracking (Voltage)Alignment
Ant. ：75Ω unbalanced Modulation frequency : 1kHz
Standard Input : 60dB Deviation : ±22.5kHz (Mono)
F r e q u e n c y
98MHz INPUT LEVEL
FM ANT SG=66dBμ V IC211 3,22pin(TP22,TP23)
Low 87.5MHZ 1.00 ± 0.5V(Check Only)
High 108.0MHZ
Low 90.0MHZ
High 106.0MHZ
Ant. ：IRE LOOP ANT
Modulation frequency : 1kHz
Modulation : 30%
F r e q u e n c y
450kHz (at 999kHz)
Low 522kHz
High 1710kHz 7.95 ± 0.8V(Check only)
Low 603kHz
High 1404kHz
CT211
L2204
VT TEST
J2403
L2205
TP23
L2101
SG RF Level : 75 open Voltage dBµV
Antenna : 75 unbalanced , Modulation : 1 kHz
: ±22.5kHz(MONO) 22.5kHz(STEREO) ±6.75kHz(PILOT)
Dev.
A l i g n m e n t
Alignment Voltage
is 0.0 ± 0.05V
6.20 ± 0.1V
Maximum
A l i g n m e n t
Maximum
1.0 ± 0.05V
Maximum
- 3 -
T2002
T2001
TP22
J2409
P a r t s Remark
Check Voltage
T2002 IC211 3,22pin(TP22,TP23)
is 0.0 ± 0.05V
L2002 Check Only
--- Check Only
--- Confirm S/N=30dB
---
P a r t s Remark
T2001
OR
XF215 Symmetrical Wave Form
L2205
--- AF Maximum
L2204
CT211 AF Maximum