Sharp XL-DH20NH User manual

XL-DH20NH
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual ........1-1
[2] Specifications...............................................1-1
[3] Names Of Parts...........................................1-2
CHAPTER 2. MECHANISM BLOCKS
[1] Caution On Disassembly.............................2-1
CHAPTER 3. DIAGRAMS
[1] Block Diagram .............................................3-1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Waveforms Of Servo Circuit ........................4-1
[2] Voltage.........................................................4-2
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Notes On Schematic Diagram ......................5-1
[2] Types Of Transistor And LED.......................5-1
[3] Schematic Diagram ......................................5-2
[4] Charts Of Connecting Wires.......................5-22
[5] Wiring Side Of PWB ...................................5-24
CHAPTER 6. FLOWCHART
[1] Troubleshooting............................................6-1
CHAPTER 7. OTHERS
[1] Function Table Of IC.....................................7-1
[2] VFD Display..................................................7-2
PARTS GUIDE
SERVICE MANUAL
CD
USB
MUTE
MUTE
CLOCK/TIMER
CLOCK/TIMER
TUNING/
FOLDER
AUX
AUX
PTY
PTY
RDS
RDS
iPod is a trademark of Apple Inc., registered in the
U.S. and other countries.
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
CONTENTS
!
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
No. S7929XLH20NHH
MICRO COMPONENT SYSTEM
MODEL
XL-DH20NH Micro Component System consisting of
XL-DH20NH (main unit) and CP-DH20NH (speaker system).
• In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
XL-DH20NH

XL-DH20NH
– 1
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1.Employing lead-free solder
Lead-free wire solder for servicing
Ref No. Description Parts No.
"MAIN, POWER, DISPLAY, HEADPHONE, USB, iPod, REFRESH PWB" of this model employs lead-free solder.
The LF symbol indicates lead-free solder, and is attached on the PWB and service manuals.The alphabetic
a
character following LF shows the type of lead-free solder.
2.Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder.Repairing with convention
a
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommen
d
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or solderin
g
bit, contact our service station or service branch in your area.
3.Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C,and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time.However, since the land may be peeled of for the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected.Make sure to turn
on and off the power of the bit as required.If a different type of solder stays on the tip of the soldering bit, it is
alloyed with lead-free solder.Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indication on the PWB silk.
Examples:
Indicates lead-free solder of tin, silver and copper.
PWB-A 92L701M5673006 MAIN
PWB-B 92L701CM904001 POWER
PWB-C 92L701CM903002 DISPLAY
PWB-D 92L701CM903005 HEADPHONE
PWB-E 92L701CM90300E USB
PWB-F 92L701CM90300W iPod
PWB-G 92L701CM90300Z REFRESH
i

XL-DH20NH
1 – 2
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual
[2] Specifications
This product is classified as a CLASS 1 LASER PRODUCT.
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF LASER POWER OUTPUT FOR THIS MODEL IS SPECIFIED TO
BE LOWER THAN CLASS IREQUIREMENTS. HOWEVER, THE FOLLOWING PRECAUTIONS MUST BE OBSERVED
DURING SERVICING TO PROTECT YOUR EYES AGAINTS EXPOSURE TO THE LASER BEAM.
1- WHEN THE CABINET HAS BEEN REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC,
AND THE PICKUP IS ON A POSITION OUTER THAN THE LEAD-IN POSITION, THE LASER WILL LIGHT FOR
SEVERAL SECONDS TO DETECT A DISC.
DO NOT LOOK INTO THE PICKUP LENS.
2- THE LASER POWER OUTPUT OF THE PICKUP INSIDE THE UNIT AND REPLACEMENT SERVICE PARTS
HAVE ALREADY BEEN ADJUSTED PRIOR TO SHIPPING.
3- NO ADJUSTMENT TO THE LASER POWER SHOULD BE ATTEMPTED WHEN REPLACING OR SERVICING
THE PICKUP.
4- UNDER NO CIRCUMSTANCES LOOK DIRECTLY INTO THE PICKUP LENS AT ANY TIME.
5- CAUTION - USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
USB
Tuner
Speaker
USB host
interface Complies with USB 1.1 (Full Speed)/ 2.0 Mass Storage Class.
Support Bulk only and CBI
protocol.
Support file MPEG 1 Layer 3
WMA (Non DRM)
Bitrate support MP3 (32 ~ 320 kbps)
WMA (64 ~ 160 kbps)
Other Maximum total number of MP3/
WMA files is 65280.
Maximum total number of folders
is 255 INCLUSIVE of root
directory.
The ID3TAG information
supportedareTITLE,ARTISTand
ALBUM only.
Supports ID3TAG version 1 and
version 2.
File system
support Support USB devices with
Microsoft Windows/DOS/FAT 12/
FAT 16/ FAT 32.
2 kbyte block length for sector.
Frequency range FM: 87.5 - 108 MHz
AM: 522 - 1,620 kHz
Type
Maximum input
power 50 W
Rated input power 25 W
Impedance 6 ohms
Dimensions
Weight 1.98 kg (4.36 lbs.)/each
General
Power source AC 220 - 240V ~ 50/60 Hz
Power
consumption Power on: 45 W
Power stand-by: 0.6 W (*)
Dimensions Width: 155 mm (6-3/32")
Height: 178 mm (7-1/64")
Depth: 243 mm (9-9/16")
Weight 2.12 kg (4.67 lbs.)
( * ) This power consumption value is obtained when the
main unit is in stand-by mode without iPod charging.
Amplifier
Output power MPO: 50 W (25W + 25 W) (10%T.H.D.)
RMS: 50 W (25 W + 25W) (10% T.H.D.)
Output
terminals Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Input terminals AUX IN (Analogue input):
500 mV/47 k ohms
CD player
Type Single disc multi-play compact disc
player
Signal
readout Non-contact, 3-beam
semiconductor laser pickup
D/A converter Multi bit D/A converter
Frequency
response 20 - 20,000 Hz
Dynamic
range 90 dB (1 kHz)
2-way 2-speaker system
5 cm (2") tweeter
10 cm (4") woofer
Width: 132 mm (5-13/64")
Height: 260 mm (10-15/64")
Depth: 171.5 mm (6-49/64")
1 – 1

XL-DH20NH
1 – 3
[3] Names Of Parts
Front panel
Display
1. iPod Docking Station
2. Remote Sensor
3. Timer Indicator
4. On/Stand-by Button
5. Function Button
6. Disc Tray
7. Headphone Socket
8. Volume Control
9. Disc / USB / iPod Play or Pause or
Stop Button
10. Disc Tray Open / Close Button
11. USB Terminal
1. MP3/WMA Folder Indicator
2. MP3/WMA Total Indicator
3. Memory Indicator
4. CD Indicator
5. MP3 Indicator
6. WMA Indicator
7. RDS Indicator
8. TA Indicator
9. PTYI Indicator
10. Extra Bass Indicator
11. TP Indicator
12. Sleep Indicator
13. Timer Play Indicator
14. Repeat Play Indicator
15. FM Stereo Mode Indicator
16. FM Stereo Receiving Indicator
17. Disc Play Indicator
18. Disc Pause Indicator
19. USB Indicator
20. Random Indicator
Speaker system
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
2
3
4
5
6
7
8
9
10
11
1
12345678910
11 13 15
17
18
19
20
12 14 16
4
3
2
1
1 – 2

XL-DH20NH
1 – 4
Remote control
1. Remote Control Transmitter
2. On / Stand-by Button
3. Direct Search Buttons
4. Play Mode Button
5. iPod Display (TV OUT) Button
6. CD / USB Stop Button
7. CD / USB Display Button
8. Mute Button
9. Volume Up or Down Buttons
10. Memory Button
11. Clear Button
12. Folder Up / Tuning Up Button
13. iPod Cursor Up Button
14. Fast Reverse or Track Down Button
15. Enter Button
16. iPod Cursor Down Button
17. Folder Down / Tuning Down Button
18. iPod Button
19. CD Button
20. USB Button
21. AUX Button
22. Open / Close Button
23. iPod Menu Button
24. iPod Play / Pause Button
25. CD / USB Play / Pause Button
26. X-Bass Button
27. Equaliser Mode Button
28. Clock / Timer Button
29. Sleep Button
30. Preset Up Button
31. Fast Forward or Track Up Button
32. Preset Down Button
33. Tuner (Band) Button
34. RDS ASPM Button
35. RDS PTY Button
36. RDS Display Button
CD
USB
MUTE
MUTE
CLOCK/TIMER
CLOCK/TIMER
TUNING/
FOLDER
AUX
AUX
PTY
PTY
RDS
RDS
27
28
29
30
35
36
33
34
31
32
26
23
22
24
25
9
8
10
11
12
13
14
15
18
17
16
19
20
21
4
2
3
5
6
7
1
1 – 3

XL-DH20NH
2 – 1
CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE
CHAPTER 2. MECHANISM BLOCKS
[1] Caution On Disassembly
Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were before disassembling.
STEP REMOVAL PROCEDURE FIGURE
1 Top Cover with 1. Screw .................. (A1)x6 1
iPod PWB 2. Screw .................. (A2)x5 1
3. Socket ................ (A3)x1 2
2 Rear Panel with PWB 1. Screw .................. (B1)x8 2
2. Screw .................. (B2)x6
3. Socket ................ (B3)x1
4. AC Cord .............. (B4)x1
3 Main PWB 1. Screw .................. (C1)x2 3
2. Screw .................. (C2)x2
3. Socket ................ (C3)x6
4. Flat Cable ........... (C4)x1
4 Power PWB 1. Screw .................. (D1)x3 4
2. Screw .................. (D2)x2
3. Screw .................. (D3)x4
4. Socket ................ (D4)x3
5 Front Panel Assy 1. Disc Tray Cover .. (E1)x1 5
2. Screw .................. (E2)x4 5
3. Hook ................... (E3)x2 5
4. Socket ................ (E4)X1 6
6 Display PWB 1. Knob ................... (F1)x1 6
2. Nut ...................... (F2)x1
3. Washer ............... (F3)x1
4. Screw .................. (F4)x8
7 Headphone PWB 1. Screw .................. (G1)x2 6
8 USB PWB 1. Screw .................. (H1)x2 6
9 Loader panel 1. Screw .................. (J1)x4 7
10 CD Mechanism Unit 1. Screw .................. (K1)x4 8
11 iPod PWB 1. Screw .................. (L1)x3 9
Figure 2
Figure 3
Figure 4
Figure 1
Front Panel Assy
Front Panel Assy
Front Panel Assy
Front Panel AssyTop Cover
Power PWB
(D4) x 3
Main PWB
(B4) x 1
(B1) x 3
M3 x 6mm
(C1) x 2
M3 x 6mm
(C2) x 1
M3 x 6mm (C3) x 3
(C3) x 2
(C4) x 1
(C3) x 1
(C2) x 1
M3 x 6mm
(D3) x 2
M3 x 6mm
(D2) x 2
M3 x 8mm
(A1) x 3
M3 x 6mm
(A2) x 5
M3 x 8mm
(D3) x 2
M3 x 6mm
(D1) x 2
M3 x 6mm
(D1) x 1
M3 x 6mm
(B2) x 6
M3 x 8mm
(B1) x 2
M3 x 6mm
(A1) x 3
M3 x 6mm
(B3) x 1
(A3) x 1
(B1) x 3
M3 x 6mm
Main PWB
Rear Panel with PWB

XL-DH20NH
2 – 2
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Front Panel Assy
Front Panel Assy
Display PWB
USB PWB
Headphone PWB
Loader Panel
Main Chassis
CD Mechanism Unit
Loader Panel
Top Cover
iPod PWB
Disc Tray Cover
(E1) x 1
(E2) x 1
M3 x 6mm
(E2) x 1
M3 x 6mm
Hook
(E3) x 1
(F1) x 1
(F2) x 1
(F3) x 1
(E4) x 1
Hook
(E3) x 1
(E2) x 2
M3 x 6mm
(F4) x 8
M3 x 8mm
(H1) x 2
M3 x 8mm (G1) x 2
M3 x 8mm
(J1) x 4
M3 x 22mm
(K1) x 4
Special Screw
(L1) x 3
M2.8 x 8mm
PULL
PULL

XL-DH20NH
3 – 1
CHAPTER 3. DIAGRAMS
[1] Block Diagram
TUNER JACK UPDATA
tuner vcc
SI4731
AMTUNER ESD Protect
Function:AM/FM/RDS
NJM4558
L
R
MUTE
Function:VOL
&
ALI M5673
Function:CD & USB Decode
RESET
FLASH
AN5888
MOTOR DRIVER ABCDEF
VCC CTRL
AUDIO OUT
DSA CONNECTOR
USB
I2C
CD_AUDIO
L
R
L
R
GND
PT6311
VFD DRIVER
DSA & IR
KEY
MOTOR
PICK UP
HEADER
MOTOR
DOOR MOTOR
Figure 3-1: BLOCK DIAGRAM (1/2)

XL-DH20NH
3 – 2
AUXL
AUXR
VIDEO
NJU7391
o
n:VOL&EQ&CHANNELS CTRL
DSA
CONNECTOR
I2C & STB
DSA CONNECTOR
RS21266
MCU
IPOD JAC
EEPROM
RESET
I2C&STB CONNECTOR
VCC CTRL
VCC CTRL
All VCC CONNECTION
AUDIO OUTPUT
Amplifier
VCC CONNECTOR
VCC OUTPUT Filter & CRTL
Commutate
TRANSFORMER
(EI33+EL19)
VCC CONNECTION
PWM + MOS
7M0880+FSDM311
TDA7265(25W+25W)
Filter and commute
L
R
GND
VFD DISPLAY
VFD CON
VFD JACK
Figure 3-2: BLOCK DIAGRAM (2/2)

XL-DH20NH
4 – 1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Waveforms Of Servo Circuit
12
3
16
4
56
78
2
1
U5
3
17
U5
124 126
U5
Figure 1 Figure 2
Figure 3 Figure 4
Figure 5 Figure 6
Figure 7 Figure 8
FCO
U5 TCO
PD
U5 U5
FE
TE SB
U5
18
SCO
U5
SPDCO

XL-DH20NH
4 – 2
[2] Voltage
1 0.000 14 5.190 27 -13.26 40 -19.28
2 5.190 15 -15.42 28 -13.30 41 -19.10
3 5.190 16 -11.72 29 -19.66 42 -19.15
4 0.000 17 -23.60 30 -18.72 43 -19.30
5 0.930 18 -23.60 31 -19.20 44 -19.68
6 0.930 19 -23.60 32 -19.55 45 5.190
7 0.150 20 -15.67 33 5.190 46 5.160
8 0.140 21 -15.37 34 -24.00 47 5.190
9 1.250 22 -15.66 35 -19.36 48 5.190
10 2.500 23 -13.62 36 -19.02 49 5.190
11 2.500 24 -23.60 37 -18.96 50 5.180
12 2.520 25 -21.60 38 -19.93 51 0.000
13 0.030 26 -23.60 39 -18.94 52 2.860
10.000 10.090 10.000
20.000 21.350 20.000
30.000 33.270 30.000
4 -12.45 4 0.000 4 0.000
50.000 50.220 53.690
60.000 61.290 63.560
70.000 73.270 70.000
812.150 83.270 83.960
11.570 15 2.550 13.790 17 2.620
20.020 16 2.790 23.750 18 0.610
33.050 17 3.340 33.790 19 0.000
41.580 18 1.970 43.790 20 3.960
51.220 19 5.190 53.790 21 3.710
60.000 20 0.000 63.810 22 1.680
70.000 21 1.450 73.800 23 3.960
85.200 22 0.000 81.800 24 3.960
90.020 23 1.820 93.810 25 3.690
10 0.020 24 0.000 10 3.790 26 3.690
11 2.760 25 5.170 11 3.700 27 0.000
12 2.550 26 1.580 12 3.640 28 0.000
13 2.720 27 1.570 13 0.040 29 0.000
14 2.600 28 2.290 14 3.960 30 0.000
15 3.620 31 0.660
16 1.250 32 3.700
10.040 94.260 17 1.240 25 3.810
23.960 10 0.000 18 8.600 26 3.800
32.700 11 3.810 19 8.590 27 3.820
41.190 12 3.810 20 3.780 28 3.790
50.000 13 0.000 21 3.810 29 3.790
61.610 14 0.000 22 3.810 30 3.790
73.710 15 3.690 23 3.800 31 3.800
83.940 16 3.630 24 3.810 32 3.800
VOLTAGE
(V)
U2 (EON F20)U1 (D4558)
U6 (RF21266)
PIN
NO VOLTAGE (V) PIN NO VOLTAGE (V) PIN NO VOLTAGE (V) PIN NO
PIN
NO VOLTAGE (V) PIN NO VOLTAGE (V)
PIN
NO VOLTAGE (V) PIN NO VOLTAGE (V)
PIN
NO VOLTAGE (V)
U8 (NJU7391)
PIN
NO VOLTAGE (V)
VOLTAGE
(V)
U1 (P16311 / DISPLAY PWB)
PIN
NO
PIN
NO VOLTAGE (V)
U7 (24C02)
U3 (AN5888) PIN
NO
PIN
NO VOLTAGE (V)
VOLTAGE
(V)
PIN
NO VOLTAGE (V)

XL-DH20NH
4 – 3
12.010 33 1.510 65 1.420 97 0.730
21.670 34 1.510 66 1.620 98 0.730
31.650 35 1.510 67 1.660 99 3.300
41.710 36 1.520 68 1.410 100 0.710
51.730 37 0.000 69 1.510 101 0.720
61.790 38 3.300 70 0.000 102 0.720
71.740 39 1.260 71 1.650 103 0.690
83.300 40 1.380 72 3.720 104 0.580
91.580 41 1.510 73 3.720 105 3.300
10 1.190 42 1.390 74 3.960 106 0.000
11 0.000 43 1.360 75 1.440 107 0.560
12 1.200 44 2.110 76 1.450 108 0.530
13 1.190 45 0.760 77 1.370 109 0.570
14 1.200 46 1.510 78 1.350 110 0.000
15 1.720 47 0.760 79 1.380 111 3.300
16 1.340 48 1.700 80 1.010 112 0.000
17 1.750 49 2.450 81 0.000 113 3.300
18 3.300 50 1.390 82 1.750 114 0.000
19 1.650 51 0.000 83 1.780 115 1.750
20 2.290 52 0.000 84 0.000 116 3.300
21 0.000 53 1.750 85 3.300 117 1.350
22 0.000 54 0.000 86 3.300 118 1.350
23 3.290 55 0.000 87 0.770 119 1.390
24 1.770 56 3.300 88 0.800 120 1.570
25 3.300 57 0.220 89 3.300 121 1.610
26 1.290 58 1.440 90 3.300 122 3.300
27 0.870 59 0.100 91 0.000 123 1.870
28 0.000 60 0.850 92 0.770 124 0.000
29 1.750 61 3.300 93 0.740 125 1.580
30 0.000 62 3.300 94 3.300 126 1.540
31 1.510 63 1.150 95 0.000 127 1.630
32 1.510 64 1.150 96 0.750 128 0.220
PIN VOLTAGE PIN VOLTAGE
10.000 11 0.340
20.000 12 0.260 11.570 11.570
30.000 13 0.360 20.020 20.020
40.000 14 0.770 33.050 33.050
50.000 15 0.000 41.580 41.580
63.230 16 0.470 51.220 51.220
73.640 17 0.720 60.000 60.000
83.690 18 0.000 70.000 70.000
91.150 19 3.230 85.200 85.200
10 0.200 20 0.000 90.020 90.020
10 0.020 10 0.020
11 2.760 11 2.760
12 2.550 12 2.550
13 2.720 13 2.720
14 2.600 14 2.600
15 2.550 15 2.550
16 2.790 16 2.790
17 3.340 17 3.340
18 1.970 18 1.970
19 5.190 19 5.190
20 0.000 20 0.000
21 1.450
22 0.000
23 1.820
24 0.000
25 5.170
26 1.580
27 1.570
28 2.290
U12
VOLTAGE
(V)
U4 (SI4731) U3 (MF1341S2161)(AN5888)
PIN
NO VOLTAGE (V) PIN
NO (V)
NO (V) NO
U5 (M5673) PIN
NO VOLTAGE (V)
VOLTAGE
(V)
PIN
NO
PIN
NO VOLTAGE (V) PIN NO VOLTAGE (V)

XL-DH20NH
5 – 1
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Notes On Schematic Diagram
[2] Types Of Transistor And LED
•Resistor:
To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means
1000 kohm and the resistor without any symbol is ohm-type resis-
tor. Besides, the one with “Fusible” is a fuse type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this symbol P
means pico-farad and the unit of the capacitor without such a sym-
bol is microfarad. As to electrolytic capacitor, the expression
"capacitance/withstand voltage is used".
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene
REF. NO
VOL1 VOLUME MAX -- MIN
DESCRIPTION POSITION
type
• Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the CD section, the CD is stopped.
• Parts marked with “ ( ) are important for main-
taining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the
set.
K1 ON/STAND-BY ON -- OFF
K2 FUNCTION ON -- OFF
K3 PLAY/PAUSE ON -- OFF
K4 OPEN/CLOSE ON -- OFF
“
HY3D
HY4D
HA7
H1A
H2A
1Y
09S
B
(3)
E
(1)
C
(2)
TOP
VIEW
TOP VIEW
S8550
L431
VIEW
FRONT
ECB
(S)(G)(D)
VIEW
FRONT
VIEW
TOP
BCE
(1)(2)(3) 1N4007
SB360
1N5399
1N4148
FRONT
VIEW
92L11103R02002
92L11103R06001
SB772
EL817

XL-DH20NH
5 – 2
[3] Schematic Diagram
Figure 5-1: MAIN (VCC AND MCU VCC) SCHEMATIC DIAGRAM
MAIN VCC
MCU VCC
1
12
23
34
45
56
67
78
89
9
CON13
CON 2.0mm(1x9)/AMP/PWR
FB3
1000RH
FB2
300RH
FB40
1000RH
FB44
7R/2A
FB45
NC
FB19
1000RH
Q7
3904
Q8
2SB772
R052
1K
EC35
470UF/10V
R054
10K
R053
10K
1ADJ
3VIN 2
VOUT
IC2
AM1117-1.8V
1ADJ
3VIN 2
VOUT
IC1
AM1117-1.8V
EC30
47UF/10V
FB1 1000RH
EC43
100UF/10V
R079 2R2
R078 2R2
E5/1
100UF/16V
E8/1
100UF/16V
EC27
470UF/10V
C022
104P EC14
220UF/10V
C038
104P
D16
IN4148
D8
IN4148
A-12V
A+12V
VCC
POWER_OFF
AMP-MUTE
CD_POWER_CTRL
GND
GND
GND
A+12V
+12V
GND
-12V
A-12V
GND
VCC
GND
AUDIO/VCC
GND
GND
AUDIO/VCC
GND
3V3
GND
VCCC
GND
MCU3V9
GND GND
MCU_VCC/VREF
MAIN PWB-A
A
B
C
D
E
F
G
H
123456

XL-DH20NH
5 – 3
Figure 5-2: MAIN (MOTOR, FLASH AND USB VCC) SCHEMATIC DIAGRAM
120-pin
Motor
Flash
USB VCC
1VINFC 2TRB_1 3REGO2 4VINSL+ 5REGO1 6FWD 7REV 8VCC1 9VOTR-
10 VOTR+ 11 VOSL+ 12 VOSL- 13 VOFC- 14 VOFC+ 15
VOTK+ 16 VOTK- 17 VOLD+ 18 VOLD- 19
VCC2 20 OPIN 21 VCTL
22
GND 23
VINLD 24 OPOUT 25 TRB_2 26 VINTK 27
BIAS 28 MUTE
U3
AM5888
EC6
10uF
C020
0.01U
R130
20K
R42
82K
R33 0
R29
21K
R34
39K
R30
12K
R9 100K
R95 100K
R49
56K
C001 0.47UF
C021
0.01UF
R40 0
R39 0R
R38
3K9
R41 1K
R35
39K
1CS#
2DO
3WP#
4GND 5
DI
6
CLK
7
HOLD#
8
VCC
U9
SFLASH/2M
C019 0.047UF
C017
104P
C48
0.1UF
L561000RH
EC26
100UF/10V
C69
0.1uF/0603
R62
39K
C023
0.1U
R63 1K/0603
1LOAD+
2LOAD-
3IN
4GND
5OUT
CON5
CON5-2.0
R64 2.2K/0603
R65
47K/0603
R58
22K/0603
R43
10K/0603
1SPIN+
2SPIN-
3SLED+
4SLED-
5LIMIT1
6LIMIT2
CON2
CON 2.0mm(1x6)
C62
104P
Q17
3904
R029
1K
R06210K
FB11
1000RH
Q16
2SB772
R09
10K
3V3-A
GND
3V3-A
3V3-A
MOTOR-GND
MOTOR-GND
SLEGP
TRAY_OUT
FOCUS
TRACK
SPINDLE
TRAY_IN
HOLD#
WP
GND
MOTOR-GND
GND
VREF_16
VREF_16
F_CLK
F_DO
F_CS
F_DI
XFOCUS
XSLEGP
TRAY_IN
TRAY_OUT
LOAD-
LOAD+
SL+
SL-
FOCUS-
FOCUS+
TRACK+
TRACK-
SPIN+
SPIN-
XSPINDLE
VREF_16
XTRACK
VREF_16
3V3-A
MVCC
MOTOR-GND
CD5V
MOTOR-
GND
MOTOR-GND
LOAD+
LOAD-
MOTOR-GND
OPEN/CLOSE
3V3-A
SPIN+
SPIN-
SL+
SL- MOTOR-GND
LIMIT
GND
GND MOTOR-GND
VCC
GND
USB-VCC_CTRL
MVCC
MAIN PWB-A
A
B
C
D
E
F
G
H
123456

XL-DH20NH
5 – 4
Figure 5-3: MAIN (TUNER AND MCU) SCHEMATIC DIAGRAM (1/2)
TUNER
Function:AM/FM/RDS
EE
P
MCU
1$PIN0 2P3-7 3RESET 4P4-7 5VSS 6P4-6 7VCC 8MODE
9
P4-5
10
P1-7
11
P3-6
12
P3-1
13
P5-4
14
P5-3
15
P1-6
16
P1-5
17
P1-4
18
P1-3
19
P1-2
20
P4-2
21
P1-1
22
P1-0
23
3-3
24
P3-4
25 P0-7
26 P0-6
27 P0-5
28 P0-4
29 P0-3
30 P0-2
31 P0-1
32 P0-0
U6
R5F21266S QFP
D61N4148
X1 32.678KHZ
R07
0R
R060R
TP81
2200UF/10V
C2 104P
C4
22P
C3
22P
R0210K R01110K
R012NC
R066 10K
R018 10K
R019 10K
R020 10K
Q6
8550
D7 IN4148 R022100R
R06410K
EC63
10UF/10V
C6 22P
R061
10K/NC
R023 10K
R026 10K R027 10K R88 10K/NC
FB50 0R
FB15 0R
FB17 FB
FB10 33R
R089
47K
FB8 33R
R16 22R
L44
300RH
1NC
2FMI
3FRGND
4AMI
5RST
6SEN 7SCLK 8SDIO 9RCLK
10 VIO
11
VDD
12
GND
13
ROUT
14
LOUT
15
NC
16
NC
17
P3
18
P2
19
P1
20
NC
U4
SI4731
L45
300RH R17 22R
R
2
1
0
C82
22P
1
1
2
2
3
3
44
55
66
T1
AMT
R69
10K
C83
22P
C78
30P
R15 22R
C79
0.47uF
R
3
1
O
C87
L41
100UH/NC
R18
10K
R71 0R
X2
32.768KHZ
R021 10K
F
U20
RCR5102
Q20
3904
R082
100
R092100K
R9
47K
C38
470P
TEST
T-SDIO
XIN
T-RCLK
I2C/SDA
TUN-CLK
TUN-RST
FMI
AMI
TUNER_3V3
I2C/CLK
I2C/SDA
AU
D
CPU3V9
CPU3V9
iPod-SDA
iPod_RXD
CPU3V9
CD_POWER_CTRL
TRAY_IN
TRAY_OUT
LED
iPod_RST
OPEN/CLOSE
iPod_TXD
MCU/VREF
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
POWER_OFF
GND
MAIN PWB-A
A
B
C
D
E
F
G
H
123456

XL-DH20NH
5 – 5
Figure 5-4: MAIN (TUNER AND MCU) SCHEMATIC DIAGRAM (2/2)
EEPROM
1
A0
2
A1
3
A2
4
GND
8VCC
7TP
6SCL
5SDA
U7
AT24C02
R04 22R
R05 22R
C5
104P
R0210K R01110K
R012NC
R01410K R01510K
R061
10K/NC
0R
0R
R01 22R
FB9 300RH
FB6 300RH
FB4 300RH
Z1
3.9V
C84
104PF
R11
10K
D
7
SCLK
8SDIO 9RCLK
10 VIO
11
VDD
12
GND
13
ROUT
14
LOUT
15
NC
16
NC
17
P3
18
P2
19
P1
R2
10K(NC)
+
EC3
100u/10V
D1
IN4148/NC D2 IN4148/NC D3 IN4148 D4 IN4148
C83
22P
2
13
Q1
8050
R13
10K
R3
1OR
L9 100UH
+
EC32
100u/10V
R50 2R2
C87 104PF
R1
330
C35
103PF
+
C27
47u/10V
Z
1
2
3
4
5
CON6
AM/FM/JACK
FB5 300RH
FB24 300RH
FB23 300RH
2
3
4
5
6
7
8
9
10
1
CON11
CON 2.0mm(1x9)/KB/VFD
FB38 300RH
FB26 300RH
FB21 300RH
FB22 300RH
FB28 22R
EC36
220UF/10V
U20
RCR5102
iPod_DET
VFD_STB1
iPod_VCC_CTRL
VFD_SDA2
AMP-MUTE
MCU/VREF
CD/DVD-STB
KEY
CD-SDA
I2C/CLK
I2C/SDA
TUN-RST
IR
USB-VCC_CTRL
T3V3
TUNER-L
TUNER-R AUDIO/VCC
AMI
FMI
XIN
GND TUNER_3V3
GND
GND
AMI
FMI
I2C/CLK
I2C/SDA
AUDIO/VCC
CPU3V9
CD-SCK
U/VREF
VFD_STB1
VFD_SDA2
MVCC
LED
KEY
IR
MVCC
VFD_CLK
GND GND
ND
GND
GND GND
GND
GND
GND
GND
VFD_CLK
D
78 9 10 11 12

XL-DH20NH
5 – 6
Figure 5-5: MAIN (iPod POWER) SCHEMATIC DIAGRAM
iPod POWER
Q9
2SB772
R056
560
R055 10K
C065
104P
Q11 8050
R058 0R
EC37
47UF/10V
R89 680R
ZD2
3V9
EC31 10UF/10V
R0590R
EC21
NC
C58
104P
Q15
2N3904
EC38
220UF/10V
R10
10K
R03 0R
VCC
iPod+3V3
VCC
GND
GND
GND
GND
GND
iPod_VCC_CTRL
iPod_VCC
MAIN PWB-A
A
B
C
D
E
F
G
H
123456

XL-DH20NH
5 – 7
-MEMO-

XL-DH20NH
5 – 8
OPU
RESET
Chip Decap.
TE1
C030
0.1uF/
0603
BC5
0.1uF/0603
EC8
10uF/10V
R36
15R/0603
12
L1
100UH
EC19
1uF
C025
0.1uF/0603
EC20 1uF
X3
16.9344MHz C033 0.1uF/0603
C30` 0.1uF/0603
EC9
47uF/16V
C018 0.1uF/0603
C024
0.1uF/0603
EC11
10uF/10V
C035
30pF/0603
C034 30pF/0603
1
VC 2
VCC 3
E4
D5
A6
B7
C8
F9
GND 10
LD 11
VR 12
MD 13
F+ 14
T- 15
T+ 16
F-
CON1
SF-P200Z(FPC)
C051 0.1uF/0603
EC17
1uF
35 BCAPOR
20 VTP
26 XTALI
1LDO
22 AVSS33_LDO
49 VREF 42 FMINL
31 BCAPIL
5MB
48 V15R 41 MICIN 46 V15L
14 MPXOUT2
16 COSP
36 LINEOUTR
3TP2
19 VTB
23 AVDD33_LDO
8AVDD33_2
12 TELP
4MC
47 V08R 39 FMINR
24 AVDD18_LDO
44 MICBIAS
10 V12
18 AVDD33_3
33 LINEOUTL
6MD
13 MPXOUT1
21 AVSS33_3
45 V08L
50
25 AVDD33_CKG
40 LINEINR
11 AVSS33_2
28 AVSS33_CKG
43 LINEINL
9HAVC
17 COSN
7MA
2TP1
32 BCAPOL
27 XTALO
15 MPXOUT3
34 BCAPIR
117
118
BTN ADIN2 119 BTN_ADIN3 120
VREF16 121
FMO 122
AVD33_1 123
DMO 124
AVSS33_1 125
GPWM 126
FOO 127 TRO 128
MDI
29 AVDD18_1
30 AVSS18_1
37 AVSS33_AUD
38 AVDD33_AUD
U5
A
C031 1uF/
0603
1
2
FB59
80R/100MHz
C032
C039 0.1uF/0603
EC15
100uF/10V
C040 0.1uF/0603
R45
1M
R37 33K/0603
R23
0R/0603
R48 33K/0603
BC4
0.1uF/0603
R24
0R/0603
EC22
10uF
C043
0.1uF/0603
Q18
2SB1132/(SOT89)
EC18
1uF
C052
0.1uF/0603
BC6
0.1uF/0603
2
13
Q2
2N3904
12
FB61
80R/100MHz
EC16
10uF/10V
C041 82nF/0603
EC4
100uF
C042 82nF/0603
EC10
100uF/10V
SB1
FE1
R26 22K
R27 22K
EC41 10uF
R28 10K
D5 IN4148
C027
0.1uF
EC28
47uF/16V
C028
0.1uF/0603
EC12
100uf/10V
C037
104P
1
1
2
2
3
3
4
4
CON9
CON 2.0mm(1x4)/USB
FB51
1000RH
C36
100UF/10V
R67 0R
R68 0R
C060
0.1uF
EC25
100uF/10V
D10 6V8
D9 6V8
FB7 80R/100MHz
GND
SEV_3V3
GND
GND
GND
GND
GND
AUD_GND
GND
GND
GND
SEV_3V3
SEV_3V3
GND
V18
GND
GND
GND
AUD_
G
AUD_GND
RF_1V8
M33V_LDO
M33V_CKG
AUD_3V3
3V3-A
GND
3V3-A
GND
AUD_3V3
AUD_GND
HAVC
MBPUH
MAPUH
MDI
FOCUS-
MCPUH
TRACK+
FOCUS+
HAVC
TRACK-
TPI
TNI
MDPUH
TELPFO
LDO
TPI
TNI
MCPUH
MBPUH
MDPUH
MAPUH
VREF_16
XSLEGP
XSPINDLE
XFOCUS
XTRACK
MDI
FELPFO
TELPFO
SBLPFO
LINE_L
LINE_R
RESETJ
LDO
LD
FELPFO
SBLPFO
GND
AUDIO/VCC DM
DP
3V3
GND
GND
GND
GND
0.1uF/0603
A
B
C
D
E
F
G
H
123456
Figure 5-6: MAIN (SERVO) SCHEMATIC DIAGRAM (1/2)