Tuner & Amplifier Section; Tuner Adjustments - Sanyo DC-X8CT 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
1. FM
Step Adjusting
Circuit Input
98.0MHz.Input Level
1
IF(0V)
Adjustment
FM Antenna SG=66dB
2 Cover
Voltage
2. MW
Step Adjusting
Circuit Input
1 Cover
Voltage
2 Tracking
Connect AM SG to
Test loop Ant.
TUNER & AMPLIFIER SECTION
Standatd Input: 60dB
Antenna
Dev.
Connection
Output
Alignment voltage IC231
V 3-22pin(TP24,25) is 0.0
--- Connect Digital DC voltmeter to
--- TP11(H), TP12(E).
SG Modulation
Antenna, IRE Loop, Distance : 60 cm
Connection
Output
--- Connect Digital DC voltmeter to
--- TP11(H )and TP12(E).
Connect to VTVM
point TP13(L)or TP14(R) and TP15(E).
: 75 unbalanced , Modulation : 1 kHz
: ±22.5kHz(MONO) 22.5kHz(STEREO) ±6.75kHz(PILOT)
SG
Frequency Position
98MHz
0.05V
87.5MHZ
108.0MHZ
: 1kHz, 30%
SG
Frequency Position
522kHZ
1611kHZ
603KHZ
1404kHZ
- 9 -
Set Adjustment
Alignment voltage IC231
Low XF233
3-22pin is 0.0
Low --- more than 0.8V
High --- less than 9.0V
Set Adjustment
Low more than 0.8V
L2153
High less than 9.0V
Low L2151-a
AF Maximum
High
Remark
0.05V
Remark