Panasonic CQEF-7280-A Service manual
ORDER No. 6079
CUSTOM MADE FOR
SUBARU
CQ-EF7280A
AM/FM MPX ELECTRONIC TUNING
RADIO with Stereo Cassette Tape
Player and 6-Disc CD Changer
SUBARU PART No. : 86201FE150
ID CORD : P129
VEHICLE : IMPREZA
DESTINATION : Australia
PRODUCED AFTER : Nov., 2002
Specification*
General
Power Supply DC 12V (11V - 16V),
Test Voltage 13.2V
Negative Ground
Current Consumption Less than 2.5A (Vol. Max.)
Maximum Power Output 25W×4ch
Output Impedance 4Ω
AM Radio
Frequency Range 531 - 1,602kHz
Usable Sensitivity 26dB/µV (S/N 20dB)
FM Stereo Radio
Frequency Range 87.5 - 108.0MHz
Usable Sensitivity 6dB/µV (S/N 30dB)
Cassette Player
Reproduction System 4-Track, 2-Program Stereo
Tape Speed 4.76cm/sec.
Wow and Flutter Less than 0.2% (WRMS)
Signal to Noise Ratio 55dB
CD Changer
Signal to Noise Ratio More than 68dB (IHF-A)
Total Harmonic Distortion Less than 0.4%
Channel Separation 62dB (IHF-A)
Dimensions** (W×H×D) 178×100×174mm
Weight** 2.7kg
* Specifications and the design are subject to possible modification
without notice due to improvements.
** Dimensions and Weight shown are approximate.
Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
“Dolby” and the double-D symbol
Laboratories Licensing Corporation.
are trade marks of Dolby
CUSTOM MADE FOR SUBARU / CQ-EF7280A
CONTENTS
Page Page
1 FEATUERS 2
2 LASER PRODUCTS
3 REAR VIEW
4 FRONT VIEW AND FUNCTIONS
5 WIRING CONNECTION
6 BLOCK DIAGRAM (Main Block)
7 BLOCK DIAGRAM (CD Changer Block)
8 TERMINALS DESCRIPTION
9 ALIGNMENT INSTRUCTIONS
10 ALIGNMENT POINTS
11 CD DISC CENTERIN G ALIGNMENT
12 PACKAGE AND IC BLOCK DIAGRAM
13 REPLACEMENT PARTS LIST 15
2
14 EXPLODED VIEW (Unit)
2
15 CD CHANGER PARTS LIST
16 EXPLODE D VIEW (CD Deck-1)
3
4
17 EXPLODE D VIEW (CD Deck-2)
5
18 EXPLODE D VIEW (CD Deck-3)
19 TAPE PLAYER PARTS
6
7
20 EXPLODE D VIEW (Tape Deck)
10
21 WIRING DIAGRAM
22 SCHEMATIC DIAGRAM-1
10
11
23 SCHEMATIC DIAGRAM-2
12
20
21
24
25
26
27
28
29
36
39
1 FEATUERS
PLL (Phase Locked Loop) synthesized tuning.
·
18-station preset (12-FM, 6-AM)
·
Scan Tuning.
·
TPS function.
·
Dolby noise reduction.
·
6-disc CD changer (in dash board).
·
CD changer control.
·
Electronic sound control function.
·
2 LASER PRODUCTS
3 REAR VIEW
2
4 FRONT VIEW AND FUNCTIONS
CUSTOM MADE FOR SUBARU / CQ-EF7280A
3
CUSTOM MADE FOR SUBARU / CQ-EF7280A
5 WIRING CONNECTION
4
6 BLOCK DIAGRAM (Main Block)
CUSTOM MADE FOR SUBARU / CQ-EF7280A
5
CUSTOM MADE FOR SUBARU / CQ-EF7280A
7 BLOCK DIAGRAM (CD Changer Block)
6
8 TERMINALS DESCRIPTION
CUSTOM MADE FOR SUBARU / CQ-EF7280A
8.1. Main Block
IC601 : C2BBGF000085
Pin
No.
1 BATT-DET Batterylevel detection I 4.7
2 ACC-DET ACC level detection I 4.7
3 WB.CONT (Ground pull-down) - 0
4 FM.CONT FM radio power control O 5.1
5 AM/FM.CONTRadio power control O 5.0
6 CD-ON CD controll enable O 5.4
7 CD-RESET CD reset O 5.3
8 CD-SOM CD serial data I 4.9
9 CD-SIM CD serial data O 5.2
10 CD-SCKM Shift clock for CD serial data O 5.3
11 CD-SW1 (Ground pull-down) I 0
12 CD-SW3 (Ground pull-down) I 0
13 IDC.CONT CD changer power control O 5.2
14 DOLBY Dolby NR control O 0
15 M1-A Tape main motor control O 0
16 M1-B Tape main motor control O 0
17 END-A Tape end detection I 1.5
18 END-B Tape end derection I 1.6
19 VOL.CLK Electronic volume clock O 0
20 VOT.DATA Electronic volume data O 0
21 MUTE System mute O 0
22 AMP.C Power Amp. stand-by O 5.2
23 V.CONT (Ground pull-down) - 0
24 ILL.C (Ground pull-down) - 0
25 EQ/AM.IN (Ground pull-down) - 0
26 BIT1 Tape mode switch I 4.9
27 AVDD +5V power supply - 5.2
28 BIT2 Tape mode switch I 4.9
29 BIT3 Tape mode switch I 0
30 SD B/S detection I 0
31 FM.ST FM stereo detection I 0.4
32 AVSS Ground - 0
33 REGCPU Coupling capacitor terminal - 3.4
34 VDD +5V power supply - 5.2
35 REGOSC Coupling capacitor terminal - 5.2
36 X2 Crystal oscillator - 2.2
37 X1 Crystal oscillator - 0
38 GND Ground - 0
39 SSC Serch stop clear O 0
40 GND Ground - 0
41 AM.IF AM IF counter O 0
42 FM.IF FM IF counter O 0
43 PLL.VDD PLL +5V power supply - 5.2
44 FM.OSC FM local OSC I 2.4
45 AM.OSC AM local OSC I 1.3
46 PLL.GND Ground - 0
47 EO0 PLL phase error O 1.4
48 NC No connection - 49 IC (Connecting to ground) - 0
50 /RESET System reset I 4.8
51 CD.EJ CD eject switch I 5.1
52 TAPE.EJ Tape eject switch I 5.1
53-57 KI1-5 Key data input I 0
58 AM NC (Ground pull-down) - 0
59 BEEP Beep output O 0
60 DIV ON/OFF (+5V pull-up) - 5.0
61-66 - Not used - -
67 M2 Tape sub motor control O 0
68 M2F Tape sub motor control O 0.5
Port Description I/O (V)
69 EN-B Rotary encoder data I 0
70 EN-A Rotary encoder data I 0
71 SYIYOU6 Specification setting I 4.9
72 SYIYOU7 Specification setting I 0
73 SYIYOU8 Specification setting I 0
74 LCD.DIN LCD data I 5.1
75 LCD.CE LCD chip enable O 0
76 LCD.CLK LCD shift clock O 0
77 LCD.DOUT LCD data O 0
78 POWER.SW Power switch input I 5.1
79 CD-CH.IN CD changer data I 5.1
80 CD-CH.OUT CD changer data O 0
81 ILL.DET (ACC5V pull-up) I 5.1
82 GND Ground - 0
83 TEST.P Test point I 5.1
84 SYIYOU1 Specification setting I 5.0
85 SYIYOU2 Specification setting I 0
86 SYIYOU3 Specification setting I 5.0
87 SYIYOU4 Specification setting I 5.0
88 SYIYOU5 Specification setting I 0
89 P.CONT Power control O 5.1
90 LCD.C LCD illumi. control O 5.1
91 TAPE.CONT Tape power control O 4.6
92 A/B.OUT Tape FF/REW selection O 0
93 MS-PL/FF MS mode control O 0
94 MSM MS gain control O 0
95 MS Tape unrecorded portion detection I 0
96 A/B.IN Tape side detection I 0
97 T.LOAD Tape loading detection I 0
98 T-IN Tape-in signal I 0
99 VDD +5V power supply - 5.2
100 GND Ground - 0
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
7
CUSTOM MADE FOR SUBARU / CQ-EF7280A
8.2. Display Block
8.3. CD Changer Block
IC901 : YEAMLC75853
Pin
No.
1-15 S1-S15 LCD segment data O 2.5
16-19 S16-S19 Not used - 20-40 S20-S40 LCD segment data O 2.5
41-43 COM1-3 LCD common O 2.5
44-47 KS1-4 Key scan O 0.9
48,49 KS5, 6 Not used - 50-54 KI1-5 Key data I 0
55 TEST (Connecting to ground) - 0
56 VDD +5V power supply - 5.1
57 VDD1 Ground through capacitor terminal - 3.3
58 VDD2 Ground through capacitor terminal - 1.7
56 Vss Ground - 0
60 OSC CR oscillator terminal - 3.9
61 DO LCD data O 4.4
62 CE LCD driver chip enable I 0
63 CL Clock for LCD I 0
64 DI LCD data I 0
Port Description I/O (V)
IC201 : MN662783RPW1
Pin
No.
1 VDD +5V power supply - 5.0
2 D0 D-RAM data I/O 2.3
3 D1 D-RAM data I/O 1.8
4 /WE D-RAM data write O 4.9
5 /RAS D-RAM row address strobe O 3.4
6 D2 D-RAM data I/O 0.8
7 D3 D-RAM data I/O 0
8 /CAS0 D-RAM columun address strobe O 3.9
9 /CAS1 D-RAM columun address strobe O 0
10 A8 D-RAM address O 0.6
11 A7 D-RAM address O 1.1
12 A6 D-RAM address O 0.7
13 A5 D-RAM address O 0
14 A4 D-RAM address O 1.1
15 A9 D-RAM address O 0.4
16-18 A0 D-RAM address O 1.0
19 A3 D-RAM address O 0
20 VSS2 Ground - 0
21 VDD2 +5V power supply - 5.0
22,23 - Not used - -
24 TVD Traverse motor control O 2.5
25 PC Not used - 26 ECS Spindle motor control O 2.4
27 TRD Tracking coil drive O 2.5
28 FOD Focus coil drive O 2.4
29 FBAL Focus balance O 1.9
30 TBAL Tracking balance O 3.0
31 VREF Refence voltage I 2.5
32 FE Focus error I 2.5
33 TE Tracking error I 2.5
34 RFENV RF envelope I 2.5
35 OFT Off track signal I 0
36 /RFDET RF detecting signal I 0
37 BDO Drop-out signal I 0
38 LDON Laser on signal O 4.5
39 ARF RF signal I 2.5
40 IREF Reference current input I 1.2
41 DRF Bias for DSL I 2.4
42 DSLF Loop filter for DSL I/O 2.5
43 DSLF2 Loop filter for DSL I/O 2.2
44 PLLF Loop filter for PLL I/O 1.4
45 VCOF Not used - 46 AVDD2 +5V power supply - 5.0
47 AVSS2 Ground - 0
48 OUTL L channel output O 2.3
49 AVSS1 Ground - 0
50 OUTR R channel output O 2.3
51 AVDD1 +5V power supply - 4.7
52-54 - (Connecting to ground) - 0
55 FLAG Flag output O 0
56 FCLK Frame clock O 0
57-59 - Not used - -
60 TX Not used - 61 MCLK Clock for I/F command I 1.0
62 MDATA Date for I/F command I 3.1
63 MLD I/F command load I 5.0
64 BLKCK Subcode block clock O 0
65 SQCK Ext.clock for sub code-Q I 5.0
66 SUBQ Code for sub. code-Q O 3.8
67 DMUTE Mute input I 0
68 STAT Status signal O 5.0
69 /RST Reset input I 5.0
Port Description I/O (V)
8
70 CSEL (Connecting to ground) - 0
71 PMCK Clock output O 2.5
72 SMCK Clock output O 2.5
73 SUBC Serial data of sub code O 0
74 SBCK Shift clock for SUBC I 0.6
75 /CLDCK Not used - 76 /TEST (Connecting to VDD) - 5.0
77 X1 Crystal oscillator - 0.4
78 X2 Crystal oscillator - 3.2
79 VDD1 +5V power supply - 5.0
80 VSS1 Ground - 0
IC301 : MN1873260AE
CUSTOM MADE FOR SUBARU / CQ-EF7280A
54 P.DOWN Power down signal O 0
55 - No connection - 56 MLD I/F command load O 5.0
57 MDATA Data for I/F command O 3.1
58 MCLK Clock for I/F command O 4.1
59 SPMT Spindle mute O 5.0
60 MUTE12 Focus/Tracking mute O 0
61 MUTE4 Loading motor mute O 4.8
62 LDOI Loading motor control I/O 2.5
63 TRV Forced traverse control I/O 2.4
64 SYNC Not used - -
Pin
Port Description I/O (V)
No.
1 VDD +5V power supply - 5.0
2 OSC2 Crystal oscillator - 2.2
3 OSC1 Crystal oscillator - 2.1
4 VSS Ground - 0
5 XI (Connecting to ground) - 0
6 XO Not used - 7 CM (Connecting to ground) - 0
8 VREFH Reference voltage I 5.0
9 SW13 Shuter SW I 4.9
10 SW12 Horizontal origin I 4.9
11 SW11 Clump SW I 0
12 SW10 Play SW I 0
13 SW4 Shuter SW I 4.9
14 SW3 Tray origin SW I 0
15 SW2 Inner SW I 4.8
16 SW1 Outer SW I 4.9
17 VREFL (Connecting to Ground) - 0
18 /RESET Reset input I 4.9
19 - (Ground pull-down) - 0
20 SCKM Clock for serial data I 5.0
21 SIM CD changer serial data I 1.3
22 SOM CD changer serial data O 4.3
23 SQCK Ext. clock for sub. code-Q O 5.0
24 SUBQ Code for sub. code-Q I 1.6
25 - Not used - 26 - (Ground pull-down) - 0
27 CD.ON CD changer start/stop I 5.0
28 - Not used - 29 BLKCK Sub. code block clock I 0
30 P.ON In operation CPU O 5.0
31 MUTE Mute output O 5.0
32 - (Ground pull-down) - 0
33 SENS Servo status O 0
34 CLVS Servo status O 5.0
35 FLOCK Focus servo lock O 0.2
36 TLOCK Tracking servo lock O 0
37 VMI Horizontal motor control O 2.5
38 HMI Vertical motor control O 0
39 HVMUTE H/V motor mute O 0
40-42 - (Ground pull-down) - 0
43 SW9 Disc-in (B) SW I 0
44 SW8 Disc-in (L) SW I 0
45 SW7 Disc-in (F) SW I 0
46 SW6 Disc push SW I 0
47 SW5 Tray hight SW I 4.5
48 BDO Drop-out signal I 0
49 DQSY Not used - 50 /RST Reset output O 5.0
51 STAT Status signal I 2.1
52 DMUTE Mute output O 0
53 XE Not used - -
9
CUSTOM MADE FOR SUBARU / CQ-EF7280A
9 ALIGNMENT INSTRUCTIONS
9.1. Alignment Conditions
Power Supply Voltage : DC13.2V
·
Output Impedance : 4
·
Output Power : 0.5W
·
Note :
Do not align the FM/AM package block. When the package block is necessary, it will be supplied already aligned at the
factory.
9.2. Dolby NR Alignment
Step Alignment Item Test Tape VTVM Connection Adjust Remarks
(1) DOLBY NR Rch RFKZ0038 TP201 VR201 Adjust for 388mV ±1.0dB
(2) DOLBY NR Lch RFKZ0038 TP301 VR301 Adjust for 388mV ±1.0dB
Ω
Balance, Fader Control : center
·
Bass, Treble Control : Center
·
Dolby NR: OFF
·
10 ALIGNMENT POINTS
10
CUSTOM MADE FOR SUBARU / CQ-EF7280A
11 CD DISC CENTERING ALIGNMENT
This adjustment is for assuring that compact discs will be placed in the center of the turntable.
·
<Adjustment Condition / Jig>
Power Supply Voltage : 13.2V
·
Test Disc : TCD-792A
·
<Adjustment Procedures>
1. Attach the adjusting screw to the upper chassis (See Figure 1.).
2. Insert the test CD (TCD-792A) into the disc No.1 position and play it.
3. After checking whether the disc is centered on the turntable, turn the adjusting screw unit it is in the center.
<Check Items>
Check that the disc is correctly centered.
·
Check that the disc is securely clamped.
·
Check that no abnormal noise is produced when clamping the disc.
·
[Directions of Turning the Adjusting Screw]
CD stops before its proper position : Turn the screw counterclockwise.
·
CD overruns : Turn the screw clockwise.
·
4. After the adjustment, lock the screw.
11
CUSTOM MADE FOR SUBARU / CQ-EF7280A
12 PACKAGE AND IC BLOCK DIAGRAM
12.1. Main Block
PA101 : YEP0PTA514B0
IC201 : C1BB00000284
IC301 : C1BA00000201
12
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