Tuner Adjustments; Cd Pick-Up Maintenance - Sanyo DC-MM5000 Service Manual

TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• Speaker impedance : 4 ohms
• TUNING FM : 87.5 - 108MHz
AM : 522 - 1710 kHz (9 kHz steps)
520 - 1710 kHz (10 kHz steps)
1. FM
Adjusting
Step
Circuit
Input
IF(0V)
1 FM Antenna SG=66dBuV/EMF
Adjustment
Cover
2 ---
Voltage
2. AM
Adjusting
Step
Circuit
Input
IF
1 Loop Ant
Adjustment
Cover
2 ---
Voltage
3 Tracking Loop Ant

CD PICK-UP MAINTENANCE

About pick-up (Optical lens) Cleaning
Clean a lens with swab of the cotton which moistened it with alcohol, cleaning paper or cleaning disc appointed.
Specified cleaning disc : LC-1 (Part code : 645 026 1961 ..... manufactured by SANYO.)
Show a clean procedure in the following in reference by swab of cotton.
1. Cotton swab is wrapped with Cleaning paper.
2. Add the isopropyl alcohol.
3. Gently move the tip of cotton swab just like a draw a whirlpool from inside to outside on the surface of lens.
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• MODE : ST (Stereo)
D2151
CT252
R2149
L2151
C2103
D2103
R2101
C2104
R2103
L2153 D2101
J2521
C2105 C2107 R2102
C2101
J4507
L2103
+9.4V
TP11 TP24
R4821 R4821 R4821
R4827 R4827 R4827
R4727 R4727 R4727
CD L R4721 R4721 R4721
Antenna : 75Ω unbalanced, Modulation : 1 kHz
Dev. : ±22.5kHz(MONO), ±22.5kHz(STEREO),±6.75kHz(PILOT)
RF Level : dBuV EMF
Output Level : about 30mV at TP13, TP14, TP15
Connection
Output
Alignment voltage IC231
3-22pin(TP24,25) is 0.0±0.05V
TP11 (H)
TP12 (E)
Anntena : IRE Loop(SG), Moduration : 1kHz 30%
RF Level : dBuV EMF
Output Level : about 30mV at TP13, TP14, TP15
Connection
Output
TP13 (L)
TP14 (R)
TP15 (E)
TP11 (H)
TP12 (E)
TP13 (L)
TP14 (R)
TP15 (E)
TP12
DIP
J2701
J2501
J2601
D2153
J2508
C2154
R2131
J2510
J2515
J2517
VT
J2708
R2106 R2106 R2106
C2109
C2310 C2310 C2310
J2518
C2111
J2519
J2520
D2102
C2312
C2318
R2108R2107 C2110 R2105 R2105 R2105 IC231
IC211 XF222
C2113 C2112
XF221 C2302 C2302 C2302
L2104
R2802
R2205 R2304
J2523
XF233
R4825 Q4700
J4708
R4701
TP25 T2002 XF233 TP14
C4705 C4705 C4705
R4963 R4963C4553 R4963C4553 C4553 R4550 R4550 R4550 C4706 C4706 C4706 R4700 R4700 R4700
J4512
R4705 C4700 C4700 C4700
SG
Adjustment
Frequency
98MHz
87.5MHz
108.0MHz
SG
Adjustment
Frequency
450KHz
at 999kHz
522kHz
1710kHz
603kHz
1404kHz
- 2 -
J2703
C2453
IC241
C2454
J2509
C2452
J2604
J2606
J2607
J2608 J2511
C2314 C2314 C2314
R2458 R2461
R2463
R2462
C2308 C2308 C2308
R2464
D4406
D2452
R2309 R2309 R2309 R4401 R4400
L2451 REEL
C2322 E
GND
J2711 R4402
R4965
PH1
R4403 Q4960
MOTOR
INI SW E
Q4961
PLUNGER
J2712
(F)REC SW
J2713
E
NC
D4960
PACK SW
J2609
R4406
(R)REC SW
R4603 R4603 R4603
R4553
C4604
TP15 TP13
R4552
IC443
L4602
J4511
R4604
Remark
Alignment voltage IC231
XF233
3-22pin is 0.0±0.05V
L2103 1.00±0.05V
--- 6.50±0.50V Check Only
Remark
Maximum
T2002
L2153 1.00±0.05V
8.10±0.50V Check Only
---
L2151
Maximum
CT252
IC231
Q4410
R4966 R4966 R4966
Q4963