Tuner Adjustments - Sanyo DC-DA370 Service Manual

TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• MODE : ST (Stereo)
• Speaker impedance : 4 ohm
• TUNING
FM : 87.5 - 108MHz
MW: 522 - 1611kHz
LW : 144 - 288kHz
1. FM
Step Adjusting
Circuit Input
98.0MHz.Input Level
1
IF(0V)
Adjustment
FM Antenna SG=66dB ƒÊ V
2 Cover
Voltage
2. MW
Step Adjusting
Circuit Input
1
IF
2 Cover
Voltage
3 Tracking
Connect AM SG to
Test loop Ant.
3. LW
Step Adjusting
Circuit Input
1 Cover
Voltage
2 Tracking
Connect AM SG to
Test loop Ant.
Connection
Alignment voltage IC231
3-22pin(TP24,25) is 0.0•} 0.05V
--- Connect Digital DC voltmeter to
--- TP11(H), TP12(E).
Connection
Connect Sweep generator to test
---
point TP13(L)or TP14(R) and TP15(E). (at 999kHz)
--- Connect Digital DC voltmeter to
--- TP11(H )and TP12(E).
Connect to VTVM
point TP13(L)or TP14(R) and TP15(E).
Connection
--- Connect Digital DC voltmeter to
--- TP11(H) and TP12(E).
Connect to VTVM
point TP13(L)or TP14(R) and TP15(E).
Standatd Input: 60dB
Antenna : 75 unbalanced , Modulation : 1 kHz
Dev. : •} 22.5kHz(MONO) •@ 22.5kHz(STEREO) •} 6.75kHz(PILOT)
SG
Output Frequency Position
98MHz
87.5MHZ
108.0MHZ
SG Modulation
Antenna, IRE Loop, Distance : 60 cm
SG
Output Frequency Position
450kHz
522kHZ
1611kHZ
603KHZ
1404kHZ
SG
Output Frequency Position
144kHZ
288kHZ
162kHZ
279kHZ
- 4 -
Set Adjustment
Alignment voltage IC231
Low XF233
Low ---
High ---
: 1kHz, 30%
Set Adjustment
Low T2002
Low
L2153
High
Low L2151
High CT252
Set Adjustment
Low L2154
High ---
Low L2152
High CT251
Remark
3-22pin is 0.0•} 0.5V
1.4 •} 0.05V
6.8 •} 0.5V
Remark
AF Maximum
1.00 •} 0.05V
6.70 •} 0.10V
AF Maximum
Remark
1.00 •} 0.05V
5.42 •} 0.10V
AF Maximum