Chapter 2. Adjustments; Adjustment - Sharp XL-ES5 Service Manual

E Market XLES5 Service Manual XL-ES5/ES50 Audio
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
Test Stage Frequency Frequency
IF 450 kHz 1,602 kHz
AM Band — 522 kHz
Coverage
AM Tracking 990 kHz 990 kHz
*1. Input: IC301 1Pin Output: IC301 23Pin
*2. Input: Input is not connected
*3. Input: Antenna Output:IC301 23Pin
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency Display
87.5 MHz 87.5 MHz 1.5V ± 1.0V
108 MHz 108 MHz 5.0V ± 1.0V
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency Display Adjusting
98.00 MHz 98.00 MHz
(30 dBµV)
• FM Detection
Signal generator: 10.7 MHz FM sweep generator
Test Frequency Frequency
Stage Display
FM IF 10.7 MHz 98.00 MHz
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Test Frequency Frequency
Stage Display
FM Band — 87.50 MHz
Coverage
FM RF 98.00 MHz 98.00 MHz
(10 ~ 20dB)
*1. Input: Antenna Output: 23 Pin of IC301
Setting/ Instrument
Display Adjusting Connection
Parts
L305 *1
(fL): L306 *2
1.1 ± 0.1 V
L302 *3
Output: TP-VT(IC301 28Pin)
Check Instrument
Point Connection
TP-VT
TP-VT
Instrument
Parts Connection
Input: Antenna
Output: Speaker Terminal
Setting/ Instrument
Adjusting Connection
Parts
Input: Pin 36 of
IC301
Output: Pin 23
of IC301
Setting/ Instrument
Adjusting Connection
Parts
(fL): L307 *1
1.5 ± 0.1 V
L304 *1
L305
AM IF
Figure 1 ADJUSTMENT POINTS
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.
2 – 1
XL-ES5/ES50
TUNER PWB
R311
TP-VT
FM BAND
COVERAGE fL
L307
AM BAND
COVERAGE fL
L304
L306
FM RF
L302
AM
Tracking