Sony CDX-MP80 User manual

1
Ver 1.0 2003. 01
Model Name Using Similar Mechanism CDX-MP70
CD Drive Mechanism Type MG-550M-156
Optical Pick-up Name DAX-23E
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
CDX-MP80
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUTAND TOTAL HARMONIC DISTORTION
23 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.
CD player section
Signal-to-noise ratio 95 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Tuner section
FM
Tuning range 87.5 – 107.9 MHz (US, Canadian Model)
87.5 – 108.0 MHz (AEP, UK Model)
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 66 dB (stereo),
72 dB (mono)
Harmonic distortion at 1 kHz
0.6% (stereo),
0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
AM (US, Canadian Model)
Tuning range 530 – 1,710 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
MW/LW (AEP, UK Model)
Tuning range MW : 531 – 1,602 kHz
LW : 153 – 279 kHz
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity MW : 30 µV
LW : 40 µV
SPECIFICATIONS
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 52 W ×4 (at 4 ohms)
General
Outputs Audio outputs (front/rear)
Subwoofer output (mono)
Power antenna relay control terminal
Power amplifier control terminal
Inputs Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input terminal
AUX IN terminal
Remote controller input terminal
Antenna input terminal
Tone controls Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Loudness +8 dB at 100 Hz
+2 dB at 10 kHz
• The tuner and CD sections have no adjustments.
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
9-874-286-01
2003A0400-1
© 2003. 01
– Continued on next page –
FM/AM COMPACT DISC PLAYER
US, Canadian Model
FM/MW/LW COMPACT DISC PLAYER
AEP, UK Model

2
CDX-MP80
optical pick-up bloc
k
semi-fixed resistor
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical
pick-up block.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
TEST DISCS
This set can playback CD-R and CD-ROM discs. The following
test discs should be used to check the capability:
CD-R test disc TCD-R082LMT (Part No. J-2502-063-1)
CD-RW test disc TCD-W082L (Part No. J-2502-063-2)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LASÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 ×50 ×182 mm
(7 1/8 ×2 ×7 1/4 in.) (w/h/d)
Mounting dimensions Approx. 182 ×53 ×161 mm
(7 1/4 ×2 1/8 ×6 3/8 in.) (w/h/d)
Mass Approx. 1.6 kg
(3 lb. 9 oz.)
Supplied accessories Parts for installation and connections (1 set)
Front panel case (1)
Card remote commander RM-X112
(US, Canadian Model)
Card remote commander RM-X113
(AEP, UK Model)
Note
This unit cannot be connected to a digital preamplifier or an equalizer
which is Sony BUS system compatible.
Design and specifications are subject to change without
notice.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
•AEP, UK model
This label is located on the bottom of the chassis.
SERVICE NOTES
•US, Canadian model

3
TABLE OF CONTENTS
1. GENERAL
Location of Controls (US, Canadian Model) .......................... 4
Location of Controls (AEP, UK Model)..................................4
Connections (US, Canadian Model)........................................ 5
Connections (AEP, UK Model) ............................................... 6
2. DISASSEMBLY
2-1. Panel Base Assy .................................................................. 7
2-2. Sub Panel (CD) ................................................................... 8
2-3. CD Mechanism Block ......................................................... 8
2-4. Cam Block Assy, Motor Block Assy................................... 9
2-5. Main Board ......................................................................... 9
2-6. Heat Sink ........................................................................... 10
2-7. Mechanism Block (M) Assy..............................................10
2-8. Tray (UM) Assy ................................................................ 11
2-9. MD Assy ........................................................................... 11
2-10. Servo Board....................................................................... 12
2-11. Optical Pick-up Block .......................................................12
3. PHASE ALIGNMENT
3-1. Gear (Cam L) .................................................................... 13
3-2. Gear (Cam R) .................................................................... 13
4. DIAGRAMS
4-1. IC Pin Descriptions ........................................................... 14
4-2. Block Diagram –CD Section–........................................... 22
4-3. Block Diagram –Audio, Display Section–........................ 23
4-4. Block Diagram –Bus Control, Power Section–................. 24
4-5. Circuit Boards Location .................................................... 25
4-6. Printed Wiring Board –CD Mechanism Section– ............. 26
4-7. Schematic Diagram –CD Mechanism Section (1/2)– ....... 28
4-8. Schematic Diagram –CD Mechanism Section (2/2)– ....... 29
4-9. Printed Wiring Boards –Main Section– ............................ 30
4-10. Schematic Diagram –Main Section (1/4)– ........................ 32
4-11. Schematic Diagram –Main Section (2/4)– ........................ 33
4-12. Schematic Diagram –Main Section (3/4)– ........................ 34
4-13. Schematic Diagram –Main Section (4/4)– ........................ 35
4-14. Printed Wiring Board –Display Section– ..........................36
4-15. Schematic Diagram –Display Section–............................. 37
4-16. IC Block Diagrams............................................................ 38
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 44
5-2. Cam Section ...................................................................... 45
5-3. Main Board Section .......................................................... 46
5-4. Front panel Section ........................................................... 47
5-5. CD Mechanism Section (1) ............................................... 48
5-6. CD Mechanism Section (2) ............................................... 49
5-7. CD Mechanism Section (3) ............................................... 50
5-8. CD Mechanism Deck Section ........................................... 51
6. ELECTRICAL PARTS LIST ........................................ 52
CDX-MP80
Notes on CD-Rs (recordable CDs)/CD-RWs (rewritable
CDs)
This unit can play the following discs:
Type of discs Label on the disc
Audio CD
MP3 files
•Some CD-Rs/CD-RWs (depending on the equipment used for
its recording or the condition of the disc) may not play on this
unit.
•You cannot play a CD-R/CD-RW that is not finalized∗.
•You can play MP3 files recorded on CD-ROMs, CD-Rs, and
CD-RWs.
•A CD-R/CD-RW to which a session can be added can be played.
∗A process necessary for a recorded CD-R/CD-RW disc to be
played on the audio CD player.
NOTE FOR THE OPENING OF THE FRONT PANEL
In this set, the front panel is lowered to below the bottom face when
it is opened.
When servicing the set, place it on a stand having a height of about
2 cm.
stand

4
CDX-MP80 SECTION 1
GENERAL This section is extracted
from instruction manual.
(US, Canadian Model)
(AEP, UK Model)

55
CDX-MP80
Connections (US, Canadian Model)

66
CDX-MP80
Connections (AEP, UK Model)

7
CDX-MP80
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Note : Follow the disassembly procedure in the numerical order given.
2-1. PANEL BASE ASSY
2-1. PANEL BASE ASSY
(Page 7)
2-2. SUB PANEL (CD)
(Page 8)
2-7. MECHANISM BLOCK (M) ASSY
(Page 10)
2-8. TRAY (UM) ASSY
(Page 11)
SET
2-9. MD ASSY
(Page 11)
2-3. CD MECHANISM BLOCK
(Page 8)
2-4. CAM BLOCK ASSY,
MOTOR BLOCK ASSY
(Page 9)
2-5. MAIN BOARD
(Page 9)
2-6. HEAT SINK
(Page 10)
2-10. SERVO BOARD
(Page 12)
2-11. OPTICAL PICK-UP BLOCK
(Page 12)
3 shaft (base panel B, D)
4 shaft (base panel B, D)
flexible board
5 panel base assy
(Take care not to pull the
flexible board excessively)
1 E ring (panel)
2 E ring (panel)

8
CDX-MP80
2-2. SUB PANEL (CD)
2-3. CD MECHANISM BLOCK
3 PTT 2.6x6
5 PTT 2.6x6
1 PTT 2.6x6
4 PTT 2.6x6
6 claw
7 claw
2 bracket (cover)
8 sub panel (CD)
(Take care not to pull the
flexible board excessively)
2 PTT 2.6x6
1 PTT 2.6x
6
3 CN401
5 CN604
4 CD mechanism block

9
CDX-MP80
2-5. MAIN BOARD
2-4. CAM BLOCK ASSY, MOTOR BLOCK ASSY
1 PTT 2.6x6
5 cover (protection)
4 PTT 2.6x6
6 motor block assy
2 cam block assy
3 CN602
4 PTT 2.6x6
ground point
3 PTT 2.6x6
ground point
1 PTT 2.6x6
5 MAIN board
2 PTT 2.6x
6

10
CDX-MP80
2-6. HEAT SINK
2-7. MECHANISM BLOCK (M) ASSY
7 heat sink
3 PTT 2.6x6
6 PTT 2.6x
6
5 PTT 2.6x10
1 PTT 2.6x6
2 cord (ANTENNA)
4 cord (SUB OUT,AUX IN)
1 PTT 2.6x
4
3 P 1.7x1.8
2 bracket (tray)
chassis (ML) assy
shaft
shaft
6 mechanical block (M) assy
4 chassis (MR)
5

11
CDX-MP80
2-9. MD ASSY
2-8. TRAY (UM) ASSY
1 screw ( M1.7x2.5)
2 screw ( M1.7x2.5)
3 screw ( M1.7x2.5
)
5 tray (UM) assy
4
1 CN3
4 insulator
8 MD assy
5 insulator
6 insulator
7 CN1
3
2
CN2

12
CDX-MP80
2-10. SERVO BOARD
2-11. OPTICAL PICK-UP BLOCK
4 toothed lock screw (M 2x3.5)
SW3
SW2
SW1
SW4
6 SERVO board
7 CN4
3 CN6
15
2
1 B 1.7x5
3 B 1.7x5
7 P 1.4x3.5
9 B 1.4x2.3
q; rack
8 shaft retainer
qa screw (feed) assy
qd standard shaft
qs optical pick-up block
4 gear cover
2 turntable motor assy (M1)
5 sled motor assy (M2)
chassis
6 gear (B)

13
CDX-MP80
SECTION 3
PHASE ALIGNMENT
3-1. GEAR (CAM L)
3-2. GEAR (CAM R)
1 motor block assy
center mark
gear (cam L) position setting hole
2 PTT 2.6x
6
g
ear (cam R) position setting hole center mark
cam block ass
y
•Align the gear (cam L) position setting hole with the center mark on
thebracketbeforescrewingthe motor block assy tothemechanism
chassis.
1Align the gear (cam R) position setting hole with the center mark
on the bracket before screwing the cam block assy to the
mechanism chassis.
2Touch the gear (cam R) with fingers in the direction of rotation
and make sure that there is no phase difference with the R-side
position setting hole.

14
CDX-MP80
4-1. IC PIN DESCRIPTIONS
• IC5 CXD9684R-004 (AUDIO INTERFACE) (SERVO BOARD)
Pin No. Pin Name I/O Pin Description
1RESET I Reset input
2MIMD I CPU interface mode select signal input Connecting to +3.3V in this set.
3AD0 I CPU interface chip select signal input
4AD1 I CPU interface latch pulse signal input
5MIDIO (I2C SDA) I/O CPU interface data input/output
6MICK (I2C SCL) I CPU interface clock signal input
7AD2 I CPU interface acknowledge signal input
8VDDT (3.3V) — Power supply pin (+3.3V)
9SDO O Data output
10 AD3 O Bit output
11 AD4 O LR clock output
12 SDI0 I Data input 0
13 BCKIA I Bit clock input A
14 LRCKIA I LR clock input A
15 AD5 I Data input 1
16 CE I Bit clock input B
17 OE I LR clock input B
18 VDD (2.5V) — Power supply pin (+2.5 V)
19 STANDBY I Standby mode control signal input
20 VSS (2.5GND) — Ground pin
21 VSSL (2.5GND) — Ground pin for DAC Lch
22 VRAL — Reference voltage pin for DAC Lch
23 LO O DAC Lch output
24 VDAL (2.5V) — Power supply pin (+2.5 V) for DAC Lch
25 VDAR (2.5V) — Power supply pin (+2.5 V) for DAC Rch
26 RO O DAC Rch output
27 VRAR — Reference voltage pin for DAC Rch
28 VSSR (2.5GND) — Ground pin for DAC Rch
29 TESTP I Test pin
30 CKS I VCO select signal input
31 AD12 O Address output 0
32 AD11 O Address output 1
33 AD10 O Address output 2
34 AD9 O Address output 3
35 VDDT (3.3V) — Power supply pin (+3.3 V)
36 AD8 O Address output 4
37 AD7 O Address output 5
38 AD6 O Address output 6
39 PO7 O Address output 7
40 VSS — Ground pin
41 AD13 I Flag input 0
42 AD14 I Flag input 1
43 WR I Flag input 2
44 AD16 I Flag input 3
45 AD15 I/O External interrupt signal input/output
46 IO0 I Data input 0
47 IO1 I Data input 1
48 VSS — Ground pin
49 IO2 I Data input 2
50 IO3 I Data input 3
51 IO4 I Data input 4
SECTION 4
DIAGRAMS

15
CDX-MP80
Pin No. Pin Name I/O Pin Description
52 VDD (2.5V) — Power supply pin (+2.5 V)
53 IO5 I Data input 5
54 IO6 I Boot control signal input
55 IO7 I SPDIF signal input
56 VSSP — Ground pin
57 PDO O PLL phase detect signal output
58 VCOI I VCO control voltage input
59 VDDP — Power supply pin (+2.5 V) for VCO
60 CKI/ACKO I/O External clock input/audio clock output
61 VDDX (2.5V) — Power supply pin (+2.5V) for crystal oscillator
62 X1 I Crystal oscillator (16.934 MHz)
63 X0 O Crystal oscillator (16.934 MHz)
64 VSSX — Ground pin

16
CDX-MP80
• IC11 HD6432238RWN31TEIV (CD SYSTEM CONTROL) (SERVO BOARD)
Pin No. Pin Name I/O Pin Description
1TEST I Test mode select signal input
2DEC XRST O DEC reset output
3DEC STBY O DEC standby mode control signal output
4 XRDE O DRAM data read-out enable signal output
5NCONot used. (Open)
6XWRE O DRAM write-in enable signal output
7 SCLK O SENS read-out serial clock signal output
8SENS I SENS signal input
9CD CLK O CD servo serial clock signal output
10 CD DAT O CD servo serial data output
11 CD LAT O CD servo latch signal output
12 CVCC — Power supply pin (+3.3V)
13 DAC MUTE O DAC mute control signal output Not used in this set. (Open)
14 VSS — Ground pin
15 MUTE O Audio mute control signal output
16 XRST O CD servo reset signal output
17 XQOK O CD servo sub-code Q OK signal output
18 EMPH O Emphasis control signal output Not used in this set. (Open)
19 GFS I GFS signal input
20 FOK I FOK signal input
21 APC2 O APC control signal output 2
22 APC1 O APC control signal output 1
23 SPST O Spindle kick signal output
24 RW SEL O Not used. (Open)
25 RF SW O Not used. (Open)
26 SIZE I Not used. (Open)
27 D IN I Not used. (Open)
28 D OUT I Not used. (Open)
29 LIM SW I PU inner detect SW signal input
30 PSB O Mute signal output
31 PC TX O Bus data output
32 PC RX I Bus data input
33 IN SW I Not used. (Open)
34 LM LO O Not used. (Open)
35 LM EJ O Not used. (Open)
36 EJECT OK I Front panel open mode signal input Connecting to VCC (+3 V) in this set.
37 CLOSE OK O Not used. (Open)
38 SCOR I Sub-code sync detect signal input
39 TRAY LAMP O Not used. (Open)
40 GRSCOR I DRAM controller sub-code sync detect signal input
41 HS O High speed signal output
42 AVSS — Ground pin
43 TE BALADJ O TE balance adjustment signal output
44 DRAM O Not used. (Open)
45 D SW I Disc chucking detect signal input Connecting to ground in this set.
46 TRAY CUR I Tray current detect signal input Connecting to ground in this set.
47 KEY0 I Test mode key SW input
48 KEY1 I Test mode rotary SW input
49 NC I Connecting to ground in this set.
50 NC I Connecting to ground in this set.
51 TEMP I Tempareture detect signal input Connecting to ground in this set.
52 NC I Connecting to ground in this set.

17
CDX-MP80
Pin No. Pin Name I/O Pin Description
53 AVREF — Reference voltage pin (+3.3 V) for A/D converter
54 AVCC — Power supply pin (+3.3 V) for A/D converter
55 MD0 — CPU operation mode setting Connecting to VCC (+3.3 V) in this set.
56 MD1 — CPU operation mode setting Connecting to VCC (+3.3 V) in this set.
57 OSC2 — Not used. (Open)
58 OSC1 — Connecting to ground in this set.
59 RSTX I CPU reset signal input
60 NMI O Connecting to VCC (+3.3 V) in this set.
61 STBY — Connecting to VCC (+3.3V) in this set.
62 VCC — Power supply pin (+3.3V)
63 XTAL — Crystal oscillator (12.288 MHz)
64 VSS — Ground pin
65 XTXAL — Crystal oscillator (12.288 MHz)
66 F WE — Flash write enable
67 MD2 — CPU operation mode setting
68 FL BOOT I Flash write-in mode select signal input
69 FL W O Flash write control signal output
70 CD ON O CD servo power control signal output
71 CDM ON O Not used. (Open)
72 DEC INT I DEC interrupt signal input
73 NC O Not used. (Open)
74 LINK OFF O Link off signal output
75 EJECT KEY I Eject key signal input
76 UNI SO O SONY bus serial data output
77 UNI SI I SONY bus serial data input
78 UNI CK I SONY bus clock signal input
79 NC O Not used. (Open)
80 SDA I/O I2C interface data input/output
81 SCL O I2C interface clock signal output
82, 83 NC O Not used. (Open)
84 SQSO I Sub-code Q data input
85 SQCK O Sub-code Q read-out clock signal output
86 LED DAT O LED data output
87 LED CLK O LED clock signal output
88 LED LAT O LED latch signal output
89, 90 NC O Not used. (Open)
91 BUS ON I Bus ON signal input
92 BU CHK I Back up voltage detect signal input
93 NC O Not used. (Open)
94 NC O Not used.
95, 96 NC O Not used. (Open)
97 TEXT SEL I CD text function select signal input
98 ESP SEL I ESP function select signal input
99 CF SEL I Custom file function select signal input
100 DOUT SEL I Digital-out select signal input

18
CDX-MP80
• IC501 MB90574CPMT-G-397-BNDE1 (SYSTEM CONTROL) (MAIN BOARD) (US, Canadian model)
• IC501 MB90574CPMT-G-398-BNDE1 (SYSTEM CONTROL) (MAIN BOARD) (AEP, UK model)
Pin No. Pin Name I/O Pin Description
1 – 4 NC O Not used. (Open)
5ATT O System mute control signal output
6SYS RST O System reset signal output
7NCONot used. (Open)
8VCC — Power supply pin (+5 V)
9AMP ATT O Power amplifier mute signal output
10 T.ROM SDA I/O Tuner unit EEPROM data input/output
11 T.ROM SCK O Tuner unit EEPROM clock output
12 NOSE SW/RX I Nose SW detect signal input
13 TX O Flash CPU write-in data output
14 BUS ON O BUS ON control signal output
15 BEEP O Beep signal output
16 TEL ATT I Telephone mute detect signal input
17 UNI SI I SONY BUS data input
18 UNI SO O SONY BUS data output
19 UNI CLK O SONY BUS clock output
20 – 23 NC O Not used. (Open)
24 SIRCS I Wireless remote data input
25 – 30 NC O Not used. (Open)
31 E VOL ATT O Electronic volume mute signal output
32 NC O Not used. (Open)
33 VSS — Ground pin
34 C — Condenser pin for voltage stabilizer
35 CDON IN I CD On signal input
36 NC O Not used. (Open)
37 FSW SFT O OSC frequency shift signal output for DC/DC converter
38 DVCC — Power supply pin (+5 V)
39 DVSS — Ground pin
40, 41 NC O Not used. (Open)
42 AVCC — Power supply pin (+5 V)
43 AVRH — Power supply pin (+5 V)
44 AVRL — Ground pin
45 AVSS — Ground pin
46 KEY IN0 I Key input 0
47 TEMP I Tempareture detect signal input
48 RC IN0 I Rotary commander input 0
49 FP-I DET I Front panel motor current detect signal input
50 QUAL I Tuner noise detction signal input (AEP, UK model)
51 TR-I DET I Tray motor current detect signal input
52 MPTH I Tuner multi-pass detect signal input (AEP, UK model)
53 VSM I S-meter voltage detect signal input
54 VCC — Power supply pin (+5 V)
55 AMP ON O AMP ON control signal output
56 NS MASK O Tuner noise masking control signal output
57 DDC ON O DC/DC converter power control signal output
58 OPEN SENS I Tray open detection signal input
59 CLOSE SENS I Traay close detect signal input
60 LED ON O Tray illumination ON signal output
61 T CLOSE O Tray loading motor output
62 T OPEN O Tray loading motor output
63 VSS — Ground pin

19
CDX-MP80
Pin No. Pin Name I/O Pin Description
64 NC O Not used. (Open)
65 FSW IN I Oscillation frequency count input
66 – 68 NC O Not used. (Open)
69 FLASH W I Flash write-in mode detect signal input
70 I2C SDA O I2C serial data output
71 I2C SCL O I2C serial clock output
72 KEYACK I Key acknowledge signal input
73 X1A — Crystal oscillator (32.768 kHz)
74 X0A — Crystal oscillator (32.768 kHz)
75 DAVN I RDS data acquisition detect signal input (AEP, UK model)
76 NC O Not used. (Open)
77 BU IN I Back-up power detect signal input
78 NC O Not used. (Open)
79 RC IN1 I Rotary commander input 1
80 AD ON O A/D converter power control signal output
81 ACC IN I Accessory key ON signal input
82 FLS PWON O Flash power ON control signal output
83 P ON O Audio circuit power ON control signal output
84 TEST IN I Test mode initial setting detect signal input
85 RAM BU I RAM reset detect signal input
86 HSTX I Hardware standby input
87 MD2 I Connecting to ground in this set.
88 MD1 I Connecting to VCC (+5 V) in this set.
89 MD0 I Connecting to VCC (+5 V) in this set.
90 RSTX I Reset signal input
91 VSS — Ground pin
92 X0 — Crystal oscillator (3.68 MHz)
93 X1 — Crystal oscillator (3.68 MHz)
94 VCC — Power supply pin (+5V)
95 ILL IN I Illumination dimmer control signal input
96 MID SW O Not used. (Open)
97 FP OPEN O OPEN/CLOSE motor control signal output
98 FP CLOSE O OPEN/CLOSE motor control signal output
99 CLOSE SW I Close SW detection signal input
100 OPEN SW I Open SW detection signal input
101 MOTOR ON O Motor power supply ON signal output
102 NC O Not used. (Open)
103 NC O Not used.
104 DEST SEL1 I Destination selector signal input 1
105 DEST SEL2 I Destination selector signal input 2
106 BOOT O Display CPU write-in control signal output
107 RE RA I Rotary encoder input (Right/AMS)
108 RE RB I Rotary encoder input (Right/AMS)
109 RE LA I Rotary encoder input (Left/VOL)
110 RE LB I Rotary encoder input (Left/VOL)
111 – 113 NC O Not used. (Open)
114 TUNER ON O Tuner ON signal output
115 – 118 NC O Not used. (Open)
119 VSS — Ground pin
120 NC O Not used. (Open)

20
CDX-MP80
• IC702 HD6432398-A02FWV (DISPLAY CONTROL) (MAIN BOARD)
Pin No. Pin Name I/O Pin Description
1 SA CLK O Spectrum analyzer clock output
2NCO O Not used. (Open)
3VSS — Ground pin
4NC—Not used. (Open)
5VCC — Power supply pin (+5 V)
6 – 9 NCO O Not used. (Open)
10 VSS — Ground pin
11 – 18 NCO O Not used. (Open)
19 VSS — Ground pin
20 – 27 NCO O Not used. (Open)
28 VSS — Ground pin
29 – 32 NCO O Not used. (Open)
33 SPE LAT I Spectrum analyzer LAT signal input Connecting to ground in this set.
34 BU IN I Back up voltage detect signal input
35, 36 VSS — Ground pin
37 NCO O Not used. (Open)
38 BUS ON I BUS ON signal input
39 VCC — Power supply pin (+5 V)
40 – 43 NCO O Not used. (Open)
44 VSS — Ground pin
45 – 48 NCO O Not used. (Open)
49 SPE I Spectrum analyzer enable signal pin
50 LINK OFF O LINK OFF signal output
51 NCO O Not used. (Open)
52 ILL ON O Illumination control signal output
53 VSS — Ground pin
54 – 56 NCO O Not used. (Open)
57 BOOT I Display CPU write-in control signal input
58 VCC — Power supply pin (+5 V)
59 NCO O Not used. (Open)
60 LCD SO/TX O LCD data output/UART signal output
61 NCO O Not used. (Open)
62 RX I UART signal input
63 L RST O Reset signal output
64 LCD CKO O LCD clock signal output
65 VSS — Ground pin
66 LCD CEO O LCD driver chip enable signal output
67, 68 VSS — Ground pin
69 – 78 NCO O Not used. (Open)
79 FL W O Not used. (Open)
80 VCL I Connecting to ground through a capacitor.
81 SYS RES I Reset signal input
82 NMI (H) I Non maskable interrupt signal input
83 STBY (H) I Standby mode signal input
84 VCC — Power supply pin (+5 V)
85 XTAL — Crystal oscillator (18.432 MHz)
86 EXTAL — Crystal oscillator (18.432 MHz)
87 VSS — Ground pin
88 NCO O Not used. (Open)
89 VCC — Power supply pin (+5 V)
90 – 96 NCO O Not used. (Open)
97 UNI SO O Bus data output