Sharp CD-XP120H (serv.man2) Service Manual ▷ View online
– 9 –
CD-XP120H
How to remove the pickup (See Fig. 9-3)
1. Remove the stop washer (C1) x 1 pc., to remove the gear
(C2) x 1 pc.
2. Remove the screws (C3) x 2 pcs., to remove the shaft
(C4) x 1 pc.
3. Remove the pickup.
Note
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
Figure 9-2
CD MECHANISM SECTION
Perform steps 1, 2, 3, 11, 12, 13 and 15 of the disassembly
method to remove the CD mechanism.
method to remove the CD mechanism.
How to remove the loading motor
(See Figs. 9-1, 9-2)
(See Figs. 9-1, 9-2)
1. Remove the screws (B1) x 5 pcs.
2. Remove the belt (B2) x 1 pc.
3. Remove the screws (B3) x 2 pcs., to remove the loading
2. Remove the belt (B2) x 1 pc.
3. Remove the screws (B3) x 2 pcs., to remove the loading
motor.
Figure 9-1
(B1)x2
ø3x8mm
ø3x8mm
(A1)x4
ø3x8mm
ø3x8mm
(B1)x3
ø3x8mm
ø3x8mm
Loading
Tray
Tray
(B3)x2
ø2.4x3mm
ø2.4x3mm
(B2)x1
(A2)x1
Loading
Motor
Motor
T/T Up/Down
Motor
Motor
(A3)x2
ø2.4x3mm
ø2.4x3mm
Figure 9-3
How to remove the T/T up/down motor
(See Figs. 9-1, 9-2)
(See Figs. 9-1, 9-2)
1. Remove the screws (A1) x 4 pcs.
2. Remove the belt (A2) x 1 pc.
3. Remove the screws (A3) x 2 pcs., to remove the T/T up/
2. Remove the belt (A2) x 1 pc.
3. Remove the screws (A3) x 2 pcs., to remove the T/T up/
down motor.
(C3)x1
ø2.6x6mm
ø2.6x6mm
CD
Mechanism
Mechanism
Stop Washer
(C1)x1
(C1)x1
Gear
(C2)x1
(C2)x1
Shaft
(C4)x1
(C4)x1
Pickup
(C3)x1
ø2.6x6mm
ø2.6x6mm
CD-XP120H
– 10 –
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
•••••
AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna
Output: TP302
*2. Input: Antenna
Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
fH: High-range frequency
AM IF
450 kHz
1,620 kHz
T351
*1
AM Band
—
522 kHz
(fL): T306
*2
Coverage
1.1
±
0.1 V
AM Tracking 990 kHz
990 kHz
(fL): T302
*1
Figure 10-2 ADJUSTMENT POINTS
ADJUSTMENT
MECHANISM SECTION
•••••
Driving Force Check
Torque Meter
Specified Value
Play: TW-2111
Tape 1: Over 80 g
Tape 2: Over 80 g
Tape 2: Over 80 g
•••••
Torque Check
Torque Meter
Tape 2
Play: TW-2111
30 to 80 g.cm
30 to 80 g.cm
Fast forward: TW-2231
—
70 to 180 g.cm
Rewind: TW-2231
—
70 to 180 g.cm
Specified Value
Tape 1
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
Tape
MTT-111
Variable
3,000
±
30 Hz
Speaker
speed
Resistor in
Terminal
motor.
(Load
resistance:
6 ohms)
resistance:
6 ohms)
•••••
Tape Speed
Figure 10-1
TAPE MECHANISM
Tape
Motor
Motor
Variable Resistor in motor
VR351
FM MUTE
Level
Level
T351
AM IF
L354
LOW PASS
FILTER
FILTER
T302
T306
IC302
FE301
CNP301
AM BAND
COVERAGE fL
COVERAGE fL
AM TRACKING
fL
fL
MAIN PWB
1
11
12
22
20
R381
R356
R357
TP301
TP302
Adjusting
Parts
Display
Frequency
• FM Mute Level (FM ST MODE)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1. Adjust so that an output signal appears.
98.00 MHz
98.00 MHz
VR351*1
Input:CNP301
(26 dB
µ
V)
Output: Speaker
Terminal
Terminal
Instrument
Connection
• FM IF
Notes:
1. Description of the "FM IF Adjustment" is not carried on this
Notes:
1. Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2. The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually.
– 11 –
CD-XP120H
TEST MODE
PLAY + DISC SKIP
test04
TIMER ON/OFF TEST MODE
FL DISPLAY:
STOP + DISC SKIP
test05
VFD DISPLAY WINDOW TEST MODE
FL DISPLAY:
VFD ALL LIGHT
FUNCTION:
TEST THE VFD DISPLAY WINDOW
PLAY + OPEN/CLOSE test08
OPEN/CLOSE & 3 DISC CHANGER AGING TEST
DISPLAY:
FUNCTION:
Enter the TEST MODE 8, MCU control the 3 DISC CHANGER OPEN/CLOSE.
After open finished, tray rotate 1 circle (360 degree). Then close, After close
finished, tray rotate 1 circle (360 degree) again.
After open finished, tray rotate 1 circle (360 degree). Then close, After close
finished, tray rotate 1 circle (360 degree) again.
Request:
Every period include 4 operation. Below is TIMING:
Enter test mode
CHANGER
Find the disc 1 position
open
delay 3S after open finish
rotate 1 circle
close
delay 3S after close finish
rotate 1 circle
CD-XP120H
– 12 –
PLAY + VOLUME DOWN
test06
FRONT PANEL KEY TEST
FL DISPLAY:
FUNCTION:
FUNCTION:
FRONT PANEL KEY TEST MODE,IF ALL KEY HAVE BEEN PRESSED 1 TIME,
THEN
PRESS THE "POWER" KEY, VFD DISPLAY "OK".
PLAY + VOLUME UP
test03
VOLUME TEST MODE
FL DISPLAY:
1. TEST 3 DISPLAY 1 SECOND. THEN CHANGE TO CD FUNCTION.
2. IN CD FUNCTION (Pickup IN CHECK DISC1 SW TOC_IL No
DISC RECEIVE OPEN/CLOSE KEY OPEN RECEIVE
OPEN/CLOSE KEY CLOSE)
3. Can change to other function [TAPE/TUNER] FUNCTION KEY PROCESS
SAME AS NORMAL PROCESS.
4. In any function within this test mode VOLUME CONTROL HAS
3LEVEL [0/23/MAX] CANCEL VOL UP/DOWN CONTINUE PROCESS
FUNCTION.
PLAY + TUNER
test02
TUNER TEST MODE
FL DISPLAY
FUNCTION
STORE 10 PRESET TUNER IN THE MEMORY [AM/FM ST]
FM test use the BAND key change from FM ST.
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