Tuner Adjustments; Cd Pick-Up Maintenance - Sanyo DC-MP7500(BK)/(XE) Service Manual

TUNER ADJUSTMENTS

J2002
D2103
L2353
L2351
CAN
CAN
L2351
T2001
CT252
C2413
T2001
C2002
R2002
1. FM
Step Adjusting
Circuit
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.
VT
L2353
J2103
R2328
C2325
C2412
D2330
R2330 C2317
CT252
CAN
R2426
CAN
T2405
CAN
R2408 R2408 R2408
CAN
C2409 C2409 C2409
J2005
C2402
C2407 C2407 C2407
IC211
C2406
R2403
R2417
R2103 R2103 R2103
C2104
C2201
Q2418
C2213
J2203
C2107
R2429
R2102
C2222
CAN
Q2101
R2003
U2001
Antenna
Dev.
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
---
---
Anntena
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
---
TP9 (L),TP7 (R) ,TP8 (E)
TP5
TP6
C2907
J2008
J2201
C2405
R2416
R2316
C2327
Q2509
E
J2202
CAN
Q2510
E
C2518
J2012
CAN
R2513C2511 R2513 R2513
C2519
R2521
R2422
C2501
X2503 IC222
J2013
C2502
C2211 J2108
R2802
J2206
R2606 R2606 R2606
R2604 R2604 R2604
J2110 R2607
Q2803
E
J2111
R2801
C2805
R2709
R2803
Q2804 E
J2210
C2410
: 75Ω unbalanced, Modulation : 1 kHz
: 22.5kHz(MONO), 22.5kHz(STEREO), 6.75kHz(PILOT)
: dBuV EMF
SG
Frequency
Output
TP5 (H) 87.5MHz
TP6 (E) 108.0MHz
: IRE Loop(SG), Moduration : 1kHz 30%
: dBuV EMF
SG
Frequency
Output
450KHz
---
at 999kHz
TP5(H ) 522kHz
TP6(E) 1611kHz
603kHz
1404kHz
- 2 -
• Use a plastic screw driver for adjustments.
• MODE : ST (Stereo)
• Speaker impedance : 6 ohms
• TUNING
FM : 87.5 - 108MHz
AM : 522 - 1611kHz (9kHz steps)
520-1610kHz (10kHz steps)
J2007
X2901 D2901
L2902
C2903C2902 C2903 C2903C2902 C2902
L2901
RDS_DA
IC223
RDS_CLK
ST
GND
+5.6V
C2908
PLL_DA
J2204
PLL_CLK
PLL_PRI
+8.5V
TU_L
C2906
GND
TU_R
L2801
1AD4B10D2520C
T002A 94V-0
Adjustment
--- 1.37±0.50V Check Only
--- 6.80±0.50V Check Only
Adjustment
Maximum
T2001
1.00±0.05V
L2353
--- 7.20±0.50V Check Only
L2351
Maximum
CT252
CN231
TP9
TP8
C2802 C2802 C2802
TP7
Remark
Remark