Sharp XL-MP333H

XL-MP333H/XL-MP444H
2 – 1
AudioXL-MP333H/XL-MP444HService ManualXL-MP333H/XL-MP444HMarketE
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT
1. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
2. CD SECTION
• Adjustment
Since this CD system incorporates the following automatic adjust-
ment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
Each time a disc is changed, these adjustments are performed
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
Test Stage Frequency Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
IF 450 kHz 1,620 kHz T351 *1
AM Band
Coverage
— 522 kHz (fL): T306
1.1 ± 0.1 V
*2
AM Tracking 990 kHz 990 kHz T302 *3
*1. Input: Antenna Output: TP302
*2. Input: Input is not connected Output: TP301
Frequency Display Check
Point
Instrument
Connection
87.5 MHz 87.5 MHz 2.2V ± 1.0V TP301
108 MHz 108 MHz 7.8V ± 1.0V TP301
Frequency Display Adjusting
Parts
Instrument
Connection
98.00 MHz
(30 dBµV)
98.00 MHz VR351 Input: Antenna
Output: Speaker Terminal
Figure 1 ADJUSTMENT POINTS
CNP301
FE301
SO301
T302
AM
Tracking fL
AM BAND
COVERAGE fL
T306
T351
AM IF
FM MUTE
LEVEL
VR351
IC303
IC302
20
C393
TP301
TP302
R350
R357
R356
TUNER PWB-A2