Export Division - 22-3, Shibuya 2-chome, Shibuyaku, Tokyo, 150-8335 Japan Tel: 03-3400-1121
Service Dept.- 50 kamitoda,Toda-shi,Saitama,335-8511 Japan Tel: 048-443-1111 FAX:048-433-6996
Service Manual
HONDA Automobile Genuine
AM/FM Radio CD Stereo
Published by Service Dept.
298-5860-00
Printed in Japan
Nov.2000 P
■SPECIFICATIONS
Radio setion
Receive range:FM87.75 & 87.9 to 107.9MHz
(100kHz step)
AM530 to 1,710Hz(10kHz step)
Intermediate frequency:
FM10.7MHz
AM450kHz
CD section
System:Compact disc audio system
Usable Discs:Compact disc
Signal to Noise Ratio: More then 60dB
Separation:More then 55dB
General
Load impedance:4Ω
Output power:More then 30W×2(Vcc 14.4V)
Power supply voltage: DC13.2V(10.8 to 15.6V)
Negative ground
Current consumption: Less than 10A
Dimensions(mm):180(W)
×60(H)×173.5(D)
■NOTE
※ Specification and design are subject to change without
notice for further improvement.
※ We cannot supply PWB with component parts in prin-
ciple. When a circuit on PWB has failure , please repair
it by component parts base. Parts which are not mentioned in service manual are not supplied.
※ Prevent damage caused by static electricity when re-
pairing the pick-up.
The pattern of the pick-up is short-circuiting for prevention.
Model
PH-2349C-A
(Genuine N0. 39100-S5A-A500-01)
(ID No.4XC0 )
PH-2349C-D
Model
■COMPONENTS
PH-2349C-A
Main unit−−−−−1
CATS CARD287-1681-001
Label290-7868-011
PH-2349C-D
Main unit−−−−−1
CATS CARD287-1681-031
Label290-7868-011
■To engineers in charge of repair or
inspection of our products.
Before repair or inspection, make sure to follow
(Genuine N0. 39100-S5N-A500)
(ID No.4XC1 )
Remove the soldering with a solder iron whose insulation
resistance is larger than 10M
connection to the main PWB
For repair table shall use copper or conductive sheet (with
impedance is lower to 100M
Be sure to put on a wrist-strap for prevent electric
static's.(with impedance is to 100M
works to drain away the static electricity build-up on the
human body.
And as static electricity build-up on clothes is not drained
away, be careful and not your clothes to touch the pick-up.
Position of short soldering for pick-up protection position
is different by model.
Some units have two short soldering points.
Always short LD circuit to open the short circuit and removes by soldering iron.
Ω(DC500V) after complete
Ω from 1MΩ)such as a sheet.
Ω from 1MΩ) The strap
- 1 -
PH-2349C
the instructions so that customers and Engineers
in charge of repair or inspection can avoid suffering any risk or injury.
1. Use specified parts.
The system uses parts with special safety features against
fire and voltage. Use only parts with equivalent characteristics when replacing them.
The use of unspecified parts shall be regarded as remodeling for which we shall not be liable. The onus of product
liability (PL) shall not be our responsibility in cases where
an accident or failure is as a result of unspecified parts
being used.
2. Place the parts and wiring back in their original positions
after replacement or re-wiring.
For proper circuit construction, use of insulation tubes,
bonding, gaps to PWB, etc, is involved. The wiring connection and routing to the PWB are specially planned using clamps to keep away from heated and high voltage
parts. Ensure that they are placed back in their original
positions after repair or inspection.
If extended damage is caused due to negligence during
repair, the legal responsibility shall be with the repairing
company.
3. Check for safety after repair.
Check that the screws, parts and wires are put back securely in their original position after repair. Ensure for safety
reasons there is no possibility of secondary ploblems
around the repaired spots.
If extended damage is caused due to negligence of repair,
the legal responsibility shall be with the repairing company.
4. Caution in removal and making wiring connection to the
parts for the automobile.
Disconnect the battery terminal after turning the ignition
key off. If wrong wiring connections are made with the battery connected, a short circuit and/or fire may occur. If
extensive damage is caused due to negligence of repair,
the legal responsibility shall be with the repairing company.
5. Cautions regarding chips.
Do not reuse removed chips even when no abnormality is
observed in their appearance. Always replace them with
new ones. (The chip parts include resistors, capacitors,
diodes, transistors, etc). The negative pole of tantalum capacitors is highly susceptible to heat, so use special care
when replacing them and check the operation afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron, make sure that the
iron tip temperature is around 270
ply the iron tip repeatedly(more than three times)to the
same patterns. Also take care not to apply the tip with
force.
7. Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
8. Cautions in checking that the optical pickup lights up.
The laser is focused on the disc reflection surface through
the lens of the optical pickup. When checking that the laser
℃. Take care not to ap-
optical diode lights up, keep your eyes more than 30cms
away from the lens. Prolonged viewing of the laser within
30cms may damage your eyesight.
9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged by
electrostatic charge caused by your clothes and body.
Make sure to avoid electrostatic charges on your clothes
or body, or discharge static electricity before handling the
optical pickup.
9-1. Laser diode
The laser diode terminals are shorted for transportation in order to prevent electrostatic damage.
After replacement, open the shorted circuit. When
removing the pickup from the mechanism, short
the terminals by soldering them to prevent this
damage.
9-2. Actuator
The actuator has a powerful magnetic circuit. If a
magnetic material is put close to it. its characteristics will change. Ensure that no foreign substances
enter through the ventilation slots in the cover.
9-3. Cleaning the lens
Dust on the optical lens affects performance. To
clean the lens, apply a small amount of isopropylalcohol
to lens paper and wipe the lens gently.
■COMPUTER ANTI-THEFT SYSTEM
This unit has a built-in Computer Anti-Theft System(CATS)
which makes the radio inoperative if power to the unit is
interrupted for any reason whatsoever(including disconnection and reconnection of the car battery).The radio will remain inoperative unless you enter the correct CATS number.
RELEASE the CATS
1. Turn on the power switch,"CODE"appear on the display.
2. Enter the code number of five figures using the preset
buttons.
3. If the entered code number is correct,make a beep
sound(about 1 second) and radio operating.
4. If the entered code number is incorrect,the five numbers
on the display and make a beep sound.
5. "Err1"appear on the display.
6. To enter the code number again,"CODE"reappears after 1 second on the display.Enter the correct code number.
7. If you enter an incorrect code number ten times in
succession,"ErrE"appear on the display.
8. The system will not accept another code input for one
hour.If at the end of that hour make a beep sound(about
1 second) and you enter an incorrect code number
again,you will have to wait another hour to try once more
and so on.
■ADJUSTMENTS
ItemProcedure
Clock accuracyChronometer
PH-2349C
1. Turn off and on the ACC switch.
2. Set the Chronometer to TP101(T-BASE), adjust TC102(CLOCK) so that a reading
of the meter is 0
±2 sec./day.
- 2 -
Measuring
instrument
■EXPLANATION OF IC
052-3154-02 M30622MA-E46GPRadio CD system controller
1.Terminal Description
pin 1 : REM +5V: O : REM5V Power supply ON signal out-
pin 2 : CD +8V: O : Power supply ON signal output for the
pin 3 : CD +5V: O : Power supply control signal output for
pin 4 : NU: - : Not in use.
pin 5 : TIME BASE: IN : Time base signal input.
pin 6 : BYTE: IN : Input "L" .
pin 7 : CN VSS: IN : Input "L" .
pin 8 : XC IN: IN : Sub system clock.
pin 9 : XC OUT: O : Sub system clock.
pin 10 : RESET_: IN : Reset signal input. Negative logic.
pin 11 : X OUT: O : Crystal connection.
pin 12 : VSS: - : Negative supply voltage.
pin 13 : X IN: IN : Crystal connection. Ceramic resonator
pin 14 : VCC: - : Positive supply voltage.
pin 15 : NU: - : Not in use.
pin 16 : SBSY_: IN : Sub Q data input from CD.
pin 17 : ACC DET_: IN : ACC detection terminal. "L"= ACC ON.
pin 18 : B/U DET_: IN : Backup voltage ON signal input. "L"=
pin 19 : H bus In/Rx int : IN : H bus data input, and IE-bus start bit
pin 20 : NAVI INT L_ : O : Front Left Navi audio signal ON. Nega-
pin 21 : NAVI INT R_ : O : Front Right Navi audio signal ON. Neg-
pin 22 : MUTE F/L: O : Audio mute signal output to "Front
pin 23 : MUTE F/R: O : Audio mute signal output to "Front
pin 24 : MUTE REAR : O : Audio mute signal output to "Rear".
pin 25 : MUTE AMP: O : Amplifier Mute signal output.
pin 26 : BEEP: O : Beep out(3.0kHz).
pin 27 : RX_: IN : GA-NET RX terminal.
pin 28 : HB O/GA TX : O : H bus data output, and GA-NET TX.
pin 29 : F-ROM/T TXD : O : With testing box, TX terminal.
pin 30 : F-ROM/T RXD : IN : With testing box, RX terminal.
pin 31 : F-ROM K/T Req : IN
pin 32 : F-ROM BUSY : O : Fixed to the low level in the normal
pin 33 : E VOL DO: O : Serial data output to the volume IC.
pin 34 : NAVI MUTE_ : IN : NAVI mute signal input. Negative logic.
pin 35 : E VOL CLK: O : Clock pulse output to the E VOL IC.
pin 36 : E VOL CE: O : Chip enable signal output to the E
pin 37 : SYS ACC ON : ON : System ACC ON signal output.
pin 38 : Power IC Diag : IN : Power IC diagnosis signal input.
pin 39 : F ROM EPM_ : O : Fixed to the low level in the normal
pin 40 : TEST: IN : Test key signal input.
pin 41 : EJECT: IN : Eject key input. Negative logic.
pin 42 : POWER: IN : "L"= power ON.
pin 43 : NU: - : Not in use.
pin 44 : F ROM CE_: O : Fixed to the low level in the normal
pin 45 : EEPROM DI: IN : Serial data input from the EEPROM.
pin 46 : EEPROM DO : O : Serial data output to the EEPROM.
pin 47 : EEPROM CLK : O : Serial clock output to EEPROM.
pin 48 : EEPROM CE : O : Chip enable signal output to the EE-
pin 49 : NU: - : Not in use.
pin 50 : FM SD: IN : FM station detect signal input.
pin 51 : AM SD: IN : AM station detect signal input.
pin 52 : FM STEREO_ : IN : FM STEREO ON signal input. Negative
put.
Loading motor and the Photo sensors.
the CD DSP. "H"= ON.
connection.
Backup ON.
detection signal input.
tive logic.
ative logic.
Left".
Right".
:
With testing box, REQ input.
condition.
VOL IC.
condition.
condition.
PROM.
logic.
pin 53 : PLL DI: IN : PLL serial data input.
pin 54 : PLL DO: O : PLL serial data output.
pin 55 : PLL CLK: O : PLL clock pulse output
pin 56 : PLL CE: O : Chip enable signal output to PLL.
pin 57 : AREA 1: IN : Destination setting input. Ref. Table 1.
pin 58 : AREA 2: IN : Destination setting input. Ref. Table 1.
pin 59 : Clock ON_/OFF : IN : Clock ON_/OFF initial setting input.
pin 60 : VCC: - : Positive supply voltage.
pin 61 : NU: - : Not in use.
pin 62 : VSS: - : Negative supply voltage.
pin 63 : 12_ / 24: IN : "H"= 24 hour mode.
pin 64 : A MODE: IN : Sub volume initial setting.
pin 65 : X MODE: IN : "L"= X MODE ON.
pin 66 : SW+B_/Rd ON : IN : Radio on port control input. "H"= with
pin 67 : CD_/AUX: O : The converter input select signal out-
pin 68 : RADIO ON: O : Radio ON signal output.
pin 69 : CATS KEY_: IN : Special signal input.
pin 70 : Disc ind: O : Disc indicator ON signal output.
pin 71 : CATS ind: O : CATS indicator ON signal output.
pin 72 : BUC 0: I/O : CD IC Data input / output.
pin 73 : BUC 1: I/O : CD IC Data input / output.
pin 74 : BUC 2: I/O : CD IC Data input / output.
pin 75 : BUC 3: I/O : CD IC Data input / output.
pin 76 : BUC CLOCK : O : CD IC clock pulse output.
pin 77 : CCE: O : Chip enable signal output to CD IC.
pin 78 : CD RESET: O : Reset signal output to CD mechanism
pin 79 : CHUCK: IN : Chucking switch signal input.
pin 80 : TR A: IN : Photo sensor signal input from the CD
pin 81 : TR B: IN : Photo sensor signal input from the CD
pin 82 : TR C: IN : Photo sensor signal input from the CD
pin 83 : CW: O : Loading motor control output.
pin 84 : CCW: O : Loading motor control output.
pin 85 : Main Volume A : IN : Main volume control pulse input.
pin 86 : Main Volume B : IN : Main volume control pulse input.
pin 87 : Sub Volume B : IN : Sub volume control pulse input.
pin 88 : Sub Volume B : IN : Sub volume control pulse input.
pin 89 : LCD DI_: IN : LCD driving data input.
pin 90 : LCD DO: O : Serial data output to the LCD driver.
pin 91 : LCD CLK: O : Serial data clock output to LCD driver.
pin 92 : LCD CE: O : Chip enable signal output to the LCD
pin 93 : S METER: IN : Input terminal of Internal A/D converter
pin 94 : A VSS: - : Analog ground.
pin 95 : REMOCOM: IN : Steering wheel remote control switch
pin 96 : Vref: IN : Reference voltage terminal for the bulit-
pin 97 : A VCC: - : Positive supply voltage for the internal
pin 98 : Back light ON : O : Back light On signal output.
pin 99 : NU: - : Not in use.
pin100 : AUDIO ON: O : "H"= Audio power supply ON.
Table 1. Destination setting input
U.S.A. H-BUSLL
EXP H-BUSHL
Table 2. Loading motor control output
CW ( pin 83 )HLHL
CCW ( pin 84 )LHHL
Radio mode, "L"= with Power mode.
put.
controller. Negative logic.
mechanism.
mechanism.
mechanism.
Ref. Table 2.
Ref. Table 2.
driver.
to detect the Voltage of FM S meter.
signal input.
in A/D converter.
analog section.
Area1(pin57)Area2(pin58)
LoadingEjectBrakeStop
- 3 -
PH-2349C
■BLOCK DIAGRAM
■ELECTRICAL PARTS LIST
Main PWB section (B1)
REF No. PART No.DESCRIPTIONREF No. PART No.DESCRIPTIONREF No. PART No.DESCRIPTION