Tuner Adjustment - Sanyo DC-PT100 Service Manual

TUNER ADJUSTMENT

• Use a plastic screw driver for adjustments.
• Speaker impedance : 8 ohms
HP-R2 HP-R1
HP.GND1
HP-L2
HP.GND2
HP-L1
HP-SW1
HP-MUT
TU-R TU-L
GND
TP14 TP13
Q2902
CN291
Q2901
L2903
C2904
L2901
JW201
CN241
1. FM
Step Adjusting
Circuit
IF
1
Adjustment
2
Cover
3 Tracking
4
Auto Stop
2. AM
Step Adjusting
Circuit
IF
1 Loop Ant
Adjustment
Cover
2
Voltage
3 Tracking Loop Ant
• MODE : ST (Stereo)
• TUNING
+12V
CE CLK
DI
5.6V
DO
TP15
C2328 C2327
1AD4B10D2011A
94V-0 F01
R2711
D2301
R2301
R2461
C2991
R2462
R2311
D2451
Antenna : 75Ω unbalanced direct, Modulation : 1 kHz
Dev. : ±22.5kHz(MONO), ±22.5kHz(STEREO),±6.75kHz(PILOT)
RF Level : dBuV EMF
Output Level : about 100mV at TP13, TP14, TP15
Connection
Input
IC231 3-22Pin
FM Ant
---
FM Ant
FM Ant
Anntena
RF Level
Output Level : about 100mV at TP13, TP14, TP15
Connection
Input
IC231 19Pin_DCCUT
(TP26)-GND
---
FM : 87.5 - 108MHz
AM : 522 - 1611 kHz
FM DET AM DET
GND
0V ADJ
RDS IO0
TP26
TP24
TP25
IC231
C2307 R2303
Q2451
R2308 R2303
C2308
C2314
C2312
13 20 24
LA1844
IC231
C2305
C2306
C2321
12 10
C2301 1
C2302
CAN
C2465
C2464
1 10 12
R2454 R2465
0V ADJ
IC241
LC72121M
24
R2305
13
C2456
C2452 C2117 R2114
R2453
XF233 TP24 XF231
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)
---
98.0MHz
: IRE Loop(SG), Moduration : 1kHz 30%
: dBuV EMF
SG
Frequency
Output
522kHz
TP11 (H) 522kHz
TP12 (E) 1611kHz
TP13 (L)
603kHz
TP14 (R)
1404kHz
TP15 (E)
- 8 -
12
1
FM.GND
FM-ANT
TP12
TP11
L2102 L2101
R2101
C2108
L2103
C2109 C2112 R2111
IC211 TA8176S
C2311
C2104 C2123 C2103
R2113
C2126 C2101
R2112 C2111 C2105 C2102
XF222
D2104
C2122
L2102
D2102 D2101
TP11(H)
TP12(E)
C2113
L2151
C2151 R2153 CAN R2151 C2152
D2151
B2101
TP12
TP11 L2151-a
TP25
Adjustment
0.0±0.05V
XF233
L2102
Confirm voltage of 108.0MHz is
---
about 7.5V.
L2101 Maximum
Confirm Auto Stop SENS.
L2101
If SENS is bad,align L2101
Adjustment
Maximum
XF231
Confirm voltage is > 0.8V.
---
Confirm voltage is > 9.0V.
L2151-a Maximum
Remark
1.1±0.1V
Remark