Tuner Adjustments; Cd Pick-Up Maintenance - Sanyo DC-DA2000 (XE) Service Manual

TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• MODE : TUNER
• Speaker impedance : 4 ohm
J4119
C4560
J4617
J4618
J4619 R4400
R4401
J4620
J4621
J4425
J4426
J4622
J4428
J4623
J4624
CN400
IC446
E
C4993 C4994
J4625
D4993
+5.6V
1. FM
Adjusting
Step
Circuit
Input
IF(0V)
1 FM Antenna SG=66dBuV/EMF
Adjustment
L2103
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.
• TUNING
FM : 87.5 - 108MHz
AM : 522 - 1611kHz, 520 - 1610kHz
TP14 TP13 TP15
J4412
J4423
J4424
L_CH GND R_CH
XF233
C2301
+9.0V
J2600
C2305
C2321
R2712
R2812
C2327 12
J4427
13
J4122
J2601
C2319 C2319 C2319
R2701
C2901
R2801
C2328
J2603
J2604
J2122 J2605
J2606
C2457 J2509
R2452
J2510
C2456 C2456 C2456
C2452
C2454
24
13
1 IC241
D2452
12
J2125
J2126 C2453
C2461
C2464
J2127
J2511
D2451
IC231
Antenna
Dev.
RF Level
Connection
Alignment voltage IC231
3-22pin(TP24,25) is 0.0±0.05V
Connect Digital DC voltmeter to
--- TP11(H), TP12(E).
Anntena
RF Level
Connection
Connect to VTVM
point TP13(L) or TP14(R) and TP15(E).
--- Connect Digital DC voltmeter to
--- TP11(H )and TP12(E).
Connect to VTVM
point TP13(L) or TP14(R) and TP15(E).
XF233 T2002
XF221
R2204 R2205
J2500
R2109
Q2201
E
R2105
J2501
C2203
J2105
R2203 R2202
T2002 J2106
L2103
R2304
J2110
J2503
C2302
XF222
1
IC231
VT
24
J2117
J2119
C2116
C2312
C2323 C2323 C2323
C2313
C2307 C2317
J2506
R2302 R2302 R2302
C2311
J2602
R2309 R2309 R2309
J2507
J2508
C2314 R2303
R2454
L2451
J2123
R2458 R2459
R2455 R2460
C2451
J2124
E
C2303
TP25 TP24 TP12
: 75Ω unbalanced, Modulation : 1 KHz
: ±22.5kHz
: dBuV EMF, Output Level : about 30mV at TP13, TP14, TP15
SG
Frequency
Output
98MHz
87.5MHz
108.0MHz
: IRE Loop(SG), Moduration : 1kHz, 30%
: dBuV EMF, Output Level : about 30mV at TP13, TP14, TP15
SG
Frequency
Output
450KHz
at 999kHz
522kHz
1611kHz(XE)
603kHz
1404kHz
- 2 -
L2103 L2151 L2153
CN201
L2104
C2101
C2112 C2113
J2100
IC211
1
C2110 R2107 R2108 R2102 C2107 C2105
D2102 D2101
C2111 R2103
D2103
C2104
R2106 R2106 R2106
R2101
J2108
C2103
L2102
J2113
L2153
R2131
C2154
D2153 D2151
R2149
L2151
C2141 C2141 C2141
CT252
C2600 C2600 C2600
S2001
VT TP11 CT252
Adjustment
Alignment voltage IC231
XF233
3-22pin is 0.0±0.05V
--- 1.00±0.05V
---
5.50±0.50V Check Only
Adjustment
Maximum
T2002
L2153
1.00±0.05V
7.10±0.50V Check Only
---
L2151
Maximum
CT252
L2151
Remark
Remark