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
IF(0V)
1 FM Antenna SG=66dBuV/EMF
Adjustment
Cover
2
Voltage
2. AM
Adjusting
Step
Circuit
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.
• MODE : ST (Stereo)
D2151
CT252
L2151
D2103
L2153
J2521
L2103
+9.4V
TP11
R4821 R4821 R4821
R4827 R4827 R4827
R4727 R4727 R4727
CD L R4721 R4721 R4721
Antenna
Dev.
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
Alignment voltage IC231
3-22pin(TP24,25) is 0.0±0.05V
---
Anntena
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
---
TP12
J2701
J2501
J2601
R2149
D2153
J2508
C2154
R2131
J2510
J2515
C2103 J2517
VT
J2708
R2101
C2104 R2106 R2106 R2106
C2109
R2103
J2518
D2101 C2111
J2519
J2520
D2102
C2312
C2318
C2105 C2107 R2102 R2108R2107 C2110 R2105 R2105 R2105
IC211 XF222
C2113
C2101 C2112
XF221
L2104
R2205
J4507
R4825 Q4700
J4708
TP24 TP25 T2002 XF233
R4963 R4963C4553 R4963C4553 C4553 R4550 R4550 R4550
C4706 C4706 C4706
J4512
R4705
: 75Ω unbalanced, Modulation : 1 kHz
: ±22.5kHz(MONO), ±22.5kHz(STEREO),±6.75kHz(PILOT)
: dBuV EMF
SG
Frequency
Output
98MHz
TP11 (H) 87.5MHz
TP12 (E) 108.0MHz
: IRE Loop(SG), Moduration : 1kHz 30%
: dBuV EMF
SG
Frequency
Output
TP13 (L)
450KHz
TP14 (R)
at 999kHz
TP15 (E)
TP11 (H) 522kHz
TP12 (E) 1710kHz
TP13 (L)
603kHz
TP14 (R)
1404kHz
TP15 (E)
- 2 -
DIP
C2453
IC241
C2454
J2509
C2452
J2604
J2606
J2607
J2608
C2314 C2314 C2314
R2458
C2308 C2308 C2308
C2310 C2310 C2310 D2452
R2309 R2309 R2309
L2451
C2322
J2711
IC231
C2302 C2302 C2302
J2712
(F)REC SW
J2713
R2802
R2304
J2523
J2609
R4406
(R)REC SW
XF233
R4603 R4603 R4603
R4701
R4553
C4604
TP14 TP15 TP13
R4552
IC443
L4602
C4705 C4705 C4705
J4511
R4700 R4700 R4700 R4604
C4700 C4700 C4700
Adjustment
Alignment voltage IC231
XF233
3-22pin is 0.0±0.05V
L2103 1.00±0.05V
--- 6.50±0.50V Check Only
Adjustment
Maximum
T2002
L2153 1.00±0.05V
8.10±0.50V Check Only
---
L2151
Maximum
CT252
IC231
J2703
J2511
R2461
R2463
R2462
R2464
D4406
R4401 R4400
REEL
Q4410
E
GND
R4402
R4965
PH1 R4403 Q4960
MOTOR
E
INI SW
R4966 R4966 R4966
Q4961
PLUNGER
E Q4963
NC
D4960
PACK SW
Remark
Remark