Tuner Adjustments (Xe) - Sanyo DC-BM500 Service Manual

TUNER ADJUSTMENTS (XE ONLY)
• Use a plastic screw driver for adjustments.
• MODE : ST (Stereo)
• Speaker impedance : 6 ohm
• TUNING
FM : 87.5 - 108MHz, 50KHz
MW: 522 - 1611 kHz, 9 kHz step
520 - 1611 kHz, 9 kHz step
LW: 144 - 288 kHz, 9 kHz step
1. FM
Step Adjusting
Circuit Input
IF(0V)
1
FM Antenna SG=66dB µV
Adjustme
nt
2 Cover ---
Voltage ---
2. MW
Step Adjusting
Circuit Input
1
IF
Adjustme LOOP ANT
nt
2 Cover ---
Voltage ---
3 Tracking
LOOP ANT
3. LW
Step Adjusting
Circuit Input
1 Cover ---
Voltage ---
Antenna
Dev.
RF LeveL
Output Level : about 500mW at TP13, TP14, TP15
Connection
Output
Alignment voltage IC231
3-22pin(TP24,25) is 0.00±0.05V
Connect Digital DC voltmeter to
TP11(H), TP12(E).
SG Modulation : 1kHz, 30%
Antenna
RF Level
Output Level
Connection
Output
Connect Sweep generator to test
point TP13(L)or TP14(R) and TP15(E)
Connect Digital DC voltmeter to
TP11(H )and TP12(E).
Connect to VTVM
point TP13(L)or TP14(R) and TP15(E)
Connection
Output
Connect Digital DC voltmeter to
TP11(H) and TP12(E).
- 5 -
: 75 unbalanced , Modulation : 1 kHz
: ±22.5kHz (MONO), 22.5kHz (STEREO) ±6.75kHz (PILOT)
: dBuV EMF
SG Adjustment
Frequency
98MHz XF233
87.5MHZ ---
108.0MHZ ---
: IRE Loop
: dBuV EMF
: about 500mW at TP13, TP14, TP15
SG Adjustment
Frequency
at 999kHz T2002
522kHZ
L2153
1611kHZ
603KHZ L2151
1404kHZ CT252
SG Adjustment
Frequency
144kHZ L2154
288kHZ ---
Remark
Alignment voltage IC231
3-22pin is 0.00 ±0.05V
1.35±0.10V check only
6.5±0.50V check only
Remark
AF Maximum
1.00±0.05V
7.30±0.50V check only
AF Maximum
Remark
1.00±0.05V
5.80±0.30V check only