Tuner Adjustments; Cd Pick-Up Maintenance - Sanyo DC-DA1200M (XE-2); DC-DA1250M (SP-2) Service Manual

TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• Speaker impedance : 4 ohms
• MODE : ST (Stereo)
• TUNING FM : 87.5 - 108MHz
AM : 522 - 1611 kHz
(9 kHz steps)
520 - 1610 kHz
(10 kHz steps)
1. FM
AdjustingCirc
Step
uit
1
IF Adjustment
1
Cover
3 Tracking
2. AM
AdjustingCirc
Step
uit
1
IF Adjustment
Cover
2
Voltage(MW)
Tracking
3
(MW)

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.
XF233
C2463
C2462
J2304
CN204
J2203
TU_D0
+5.6V
TU_CLK
TU_DATA
GND
LID_SW
GND
KEY2
GND
TU_CE
+8.5V
TU_L
GND
TU-R
TP14
Antenna
Dev.
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
FM Ant IC231(3-22Pin)
SG=66dBuV
---
FM Ant
Anntena
RF Level
Output Level : about 30mV at TP13, TP14, TP15
Connection
Input
Loop Ant
---
Loop Ant
TP11 TP12
T2002
J2201
Q2451
R2460
C2453
VT VT
IC241
J2302
C2454
C2322
J2102 J2103
R2455 R2455 R2455
R2453
R2452
C2457
J2305
R2900
J2306 XF233
T2002
J2307
R2304
J2308
C2302
R2306 R2306 R2306
IC231
C2327 C2324
C2315
J2107
C2328
J2319
C2314
TP15 TP13 IC231
: 75Ω unbalanced direct, Modulation : 1 kHz
: ±22.5kHz(MONO), ±22.5kHz(STEREO),±6.75kHz(PILOT)
: dBuV EMF
SG
Frequency
Output
98.0MHz
TP24,25
TP11 (H)
87.5MHz
TP12 (E)
108.0MHz
TP13 (L)
90.0MHz
TP14 (R)
106.0MHz
TP15 (E)
: IRE Loop(SG), Moduration : 1kHz 30%
: dBuV EMF
SG
Frequency
Output
450KHz
---
at 999kHz
TP11 (H) 522kHz
TP12 (E) 1611kHz
TP13 (L)
603kHz
TP14 (R)
1404kHz
TP15 (E)
- 2 -
L2103
R2910
R2454
J2200
C2116
C2104
C2115 C2115 C2115
J2101
J2301
R2103 R2103 R2103
D2102
D2101
C2103
R2108
R2102 C2107 C2107 C2107
L2103
L2001
J2303
C2105
XF211
IC211
R2109 R2109 R2109
C2113 C2101
C2114
L2104
R2110 R2110 R2110
L2153
XF221
R2131
C2154
XF222
D2103
CT252
D2104
C2303
R2149
C2151
J2312
C2141 C2141 C2141
D2151
C2313
D2153
D2152
J2315
L2151
J2317
R2151
R2148
TP25 TP24 L2151
Adjustment Remark
Maximum
XF233
1.00±0.05V
L2103
5.3±0.50V Check Only
---
--- Maximum
Adjustment Remark
Maximum
T2002
L2153 1.00±0.05V
7.50±0.50V Check Only
---
L2151
Maximum
CT252
S2001
CT252
CN201
L2153