Sanyo DC-BM500, Service Manual

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