Chrysler 1988 Car Stereo Service Manual 电路图.pdf

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1、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 FIGURE 3-13. PARTS LOCATION, SHINWA CASSETTE 3-12 RadioFans.CN 收音机爱 好者资料库 i ii iii 3-zTHR”3-19 L?L?kEE 3-x 3-x 3-x 3-z 3-z 3-z 3-z 3-z 3-z 3-3 3-4 3-4 3-5 3-5 3-s 3-e 3-9 3-9 3-10 3-10 z-10 3-13 FIGURE 3-z 3-4 3-5 3-s 3-7 3-e. 3-9 3-10 3-11 3-12 x-15 z

2、-14 3-15 3-x6 n 3-x 3-z EL? and C119, C121. The operation of U105 is software controlled using a two wire I2 C Bus connected to pins 1 and 28. Capacitor Cl17 is the Bass control capacitor for the left channel as Cl18 is for the right. Capacitor Cl05 is the treble control capacitor for the left chann

3、el as Cl06 is for the right. Capacitors Cl07 and Cl08 are for supply voltage filtering. The internal volume, tone and balance stages are variable depending on the data on the 12C Bus sent by the microprocessor. The U105 has two outputs for the left channel pins 3 and 4 and two outputs for the right

4、channel pins 25 and 26 and the variable fader control in the IC responds to the data from the microprocessor. 4. Power Amplifiers -The audio power amplifiers U107, U108, U109 and UllO have their inputs capacitively coupled to pins 2 and 13. Muting is accomplished by the DC voltage level on pin 11. T

5、he switched power is applied to pins 6 and 8 for bootstrapping a feedback technique to improve linearity and also pin 10 for +vp (supply voltage). The devices are dual audio integrated Class B hi-fi power amplifiers to be used in the Bridge-Tied-Load (BTL) configuration. Pin 9 is the output feed and

6、 pin 5 is the output return. E. POWER There are four power inputs to the radio. The battery line P107 pin 1 maintains the memory and clock functions. ANY INTERRUPTION OF THE UNSWITCHED POWER WILL CAUSE THE CLOCK TO REVERT BACK TO 12:00 AND THE RADIO TO REVERT TO 530 kHz IN THE U.S. MODE. The switche

7、d voltage is applied to P107 pin 2.Chokes LlOl and L102 provide filtering and isolate power for the left side audio outputs from the right side audio outputs. The switched voltage is necessary to get a clock display and operate the radio. The rheostat dimming line P107 pin 3 provides a controllable

8、dimming of the incandescent lamps and vacuum fluorescent display by varying the voltage. The side marker input P107 pin 4 is used to lower the brightness of the vacuum fluorescent display. 1-22 F. CLOCK The clock function is derived from the synthesizer on-chip oscillator which is stabilized by a 3.

9、96 MHz quartz crystal (X100). Capacitor Cl31 is a fine tuning trimmer for setting the clock accuracy. As an example,if the oscillator frequency was 392 Hz low (196 Hz low at U102 pin 14), this would cause the clock to lose one minute per week. This same degree of error would show up as only 79 Hz lo

10、w on the AM local oscillator. See Section IV for the oscillator alignment procedure. G. MECHANISM CONTROL BOARD Because of the surface mounted devices/components (SMD), it is recommended that board level maintenance be performed instead of component level. H. PREAMPLIFIER Because of the surface moun

11、ted devices/components (SMD), it is recommended that board level maintenance be performed instead of component level. IV. ALIGNMENT A. CLOCK REFERENCE FREOUENCY SETTING 1. Standard Method - The reference oscillator can be set without opening the radio by following this method. a. Turn the radio on a

12、nd tune to 540 on the display. b. Connect an accurately calibrated counter to Jl pin 7 (TPl) which is accessible through the top cover, see Fig. 1-4. This should display the AM local oscillator frequency, 990 kHz when the radio is tuned to 540. C . Adjust Cl31 to give a local oscillator frequency of

13、 exactly 990 kHz +/- Hz. Trimmer capacitor C131, which is on the audio logic board,can be adjusted with a long tuning tool through a hole in the top cover and RF board, see Fig. l-4. l-23 2. Alternate Method - This method is used when a frequency counter is unavailable, and uses lissajous patterns.

14、A standard laboratory oscilloscope with two low capacitance (X10) probes and a known good electronic tuned radio with (3.96 MHz XTAL), for a frequency standard, are required for this procedure (see Fig. l-5). a. b. C. d. e. Gain access to U102 pin 14 of the frequency standard radio and connect it to

15、 the oscilloscope horizontal input. Connect U102 pin 14 of the radio under test to the oscilloscope vertical input. Connect both radios to a power source of switched and unswitched voltage, as described in the service notes. (13.2V) With oscilloscope horizontal sweep, set to external, adjust the osc

16、illoscope vertical and horizontal gain controls to obtain a rectangular or circular pattern (see Fig. l-5). Slowly adjust the trimmer capacitor Cl31 on the radio under test to obtain as near as possible, a stationary pattern. One complete revolution of the pattern per second indicates a difference i

17、n frequency of 1 HZ. 1-24 (Q7-B Jl PIN 7 ITP31 (TP1) Cl31 ON AUDIO/LOGIC R50 (FM STEREO PILOT) PC BOARD T3 FM PEAK DET U6 PIN ll (TP4l) I R44 R43 (SEPARATION! (BLEND) FIGURE 1-4. ALIGNMENT LOCATIONS ELECTRONIC TUNED RADIO (REFERENCE) U102 PIN 14 x10 HORIZONTAL IN INPUT PROBE 0 FIGURE 1-5. LISSAJOLIS

18、 PATTERN TEST SET-UP 1-25 B. AM ALIGNMENT PROCEDURE The AM tuned circuits are factory aligned and alignment is not recommended. However, the AM dummy antenna detail is shown in Figure l-6 for an aid in diagnosis. PLUG TO FIT RECEIVER ANTENNA CONNECTOR 40 PF 7 TO SIGNAL TO RECEIVER GENERATOR - - ANTE

19、NNA CONNECTOR APPLICABLE SIGNAL GENERATOR IMPEDANCE MATCHING RESISTOR METAL SHIELD CAN MUST BE ATTACHED TO PLUG FIGURE l-6. AM DUMMY ANTENNA DETAIL C. FM ALIGNMENT PROCEDURE Connect an 8 Ohm, 20 watt, resistive load in place of each speaker and connect an audio voltmeter across each of the front spe

20、aker loads. CAUTION BOTH INPUT TERMINALS OF THE VOLTMETER MUST BE ISOLATED FROM GROUND. Connect a signal generator through an FM dummy antenna, (see Figure l-7), to the receiver antenna connector, adjust the signal generator for 22.5 kHz deviation at 400 Hz. Connect a 13.2 volt power supply to the r

21、eceiver power leads. PLUG TO FIT RECEIVER ANTENNA CONNECTOR 1-26 FIGURE l-7. FM DUMMY ANTENNA DETAIL FM ALIGNMENT Receiver Step Test Signal Tuned ToAdjustments,see Figure 4. STATION DETECTOR - FINE ADJUSTMENT 1. 97.9 MHZ 97.9 MHzSet the signal generator output to 5 uv. Adjust T3 so that the radio is

22、 unmuted at 97.9 MHz and mutes when tuned to either 97.7 MHz or 98.1 MHz. FM STEREO ALIGNMENT 2. Set the signal generator output to 1 mv for quieting. Do not modulate. Do not use stereo pilot. Connect a frequency counter through a 56K Ohm series resistor to TP4 (pin 11 of U6). 97.9 MHz 97.9 MHz Adju

23、st R65 for 19 kHz signal at U6-pin 11. STEREO BLEND 3. Set the signal generator output to 15 uv. Modulate with 400 Hz,22.5 kHz deviation. Turn the stereo pilot on. 97.9 MHz 97.9 MHz Begin with R43 and R44 adjusted to the full clockwise position. 4. 97.9 MHz 97.9 MHz Adjust R43 for 10 db of stereo se

24、paration at 400 Hz. 5. 97.9 MHz 97.9 MHZ Increase the signal generator output to 3 mv and adjust R44 for maximum stereo separation. 6. 97.9 MHz 97.9 MHz Recheck the stereo separation at 15 uv. If it does not fall between 11 db and 15 db, readjust R43 for 13 db of stereo separation. 1-27 V. DISASSEMB

25、LY AND ASSEMBLY PROCEDURE A. DISASSEMBLY PROCEDURE In order to replace components in the Electronic Tune Cassette Radio,the following removal steps must be performed (see Table l-6 for removal sequence). TABLE 1-6. ELECTRONIC TUNE RADIO REMOVAL SEQUENCE r Steps To Be Part Location Part Performed Fig

26、ures Escutcheon/Switch Assembly 1 1-8and l-10 Control Board 1 and 2 l-10 Top Cover 31-16 Tape Mechanism Assembly 1 and 4 l-14 RF PC Board Assembly 1,3,4 and 5 l-13 Audio/Logic PC Board Assembly 1,3,4,5 and 6 l-15 Static Display Module Assembly 1 and 2 l-11 Tape Mechanism Sub-Assembly 4 and 8 1. Escu

27、tcheon/Switch Assemblv Removal - To remove the Escutcheon/Switch Assembly, perform the following steps (see Figure l-8). a. Remove two screws from the left side front and two screws from the right side front of the chassis. b. Pull assembly forward sufficiently to unplug the Audio-Control Cable Asse

28、mbly (W202), (see Figure l-10). Place a flat blade screwdriver blade under flange of the connector and pry the connector out. 2. Control PC Board Assemblv Removal - To remove the Control PC Board Assembly (117), depress the six retainer tabs,and remove from the escutcheon (see Figure l-10). 1-28 WHE

29、N RE-INSTALLING THE CONTROL BOARD, PLACE THE JOYSTICK IN THE CENTER AND LAY THE BOARD STRAIGHT INTO THE ESCUTCHEON. GENTLY PRESS IN WITH THUMBS IN CLEAR AREAS OF THE BOARD UNTIL IT SNAPS IN. EXERCISE EACH SWITCH FOR PROPER SWITCH SHAFT SEATING. 3.Top Cover Removal - To remove the Top Cover (107), re

30、move two screws from top rear of radio and lift cover off, remove the Top Cover Insulator (103), (see Figure 1-16). 4. Tave Mechanism Assembly Removal - To remove the Tape Mechanism Assembly, perform the following steps: a. Remove two screws on rear. b. Disconnect the Radio/Tape Interface Cable from

31、 Header P103 (see Figure 1-14). 5. RF PC Board Assembly Removal - To remove the RF PC Board Assembly (115), perform the following steps: a. Desolder the five tabs from the chassis to free the board (see Figure l-13). b. Lift the RF PC board assembly gently out. P104 will unplug from Jl as the board

32、is lifted out. 6. Audio/Logic PC Board Assemblv Removal- To remove the Audio/Logic PC Board Assembly (116), perform the following steps: a. Desolder five ground tabs located two on each end and one in back of the PC board (see Figure l-15). b. Remove four screws that hold the audio ICs to the heatsi

33、nk, one on each end and two in the back. C .Drop the audio/logic board down and out of the heat sink. 1-29 7. StaticDisplay Module Removal- To remove the static disulav module (U201). (see Fiqure l-11), desolder the static dispiay module from the control PC board. As with all components on the contr

34、ol board, care must be taken to preserve the copper tracts on top of the PC board, as well as the bottom. When installing a new display board, make sure of a good top side connection as well as bottom. Damaged tracts may be repaired with a thin gage, solid conductor wire. 8. Cassette Tape Mechanism

35、Subassemblv Removal - To remove the Cassette Tape Mechanism Subassembly, remove the four Phillips head screws on the bottom cover. The tape mechanism subassembly should now be free. B. ASSEMBLY PROCEDURE Reverse the component removal sequence to reassemble the radio. KNOB ESCUTCHEON JOYSTICK ,110, B

36、LK 11011 (111) BRT LENS ,114) INFINITY (114) PREMIUM FIGURE l-8. PARTS LOCATION, ESCUTCHEON ASSEMBLY l-30 INSULATOR HEATSINK. GROUND SCREW CHASSIS ASSEMBLY FIGURE l-9. PARTS LOCATION, HEAT SINK/CHASSIS ASSEMBLY FIGURE TAPE DOOR TAPE DOOR TAPE DOOR ESCUTCHEON DOOR) PIN (PIN) SPRING (SPRING) ASSEMBLY

37、(1 10) BLK (111) BRT l-10. PARTS LOCATION, BACK OF ESCUTCHEON ASSEMBLY 1-31 KNOB JOYSTICK (101) CONTROL JOYSTICK (R202) ELK (R202) SRT - SPEC. 2 SPKRS MODULE STATIC DISPLAY (U201) FIGURE l-11. PARTS LOCATION, CONTROL PC BOARD ANTENNA MODULE HEADER AM RFTUNER ( U 2 ) l4PIN (J1) MODULE MODULE FM, RF,

38、MIX. FILTER/AMP osc (U4) (U7) FIGURE 1-12. PARTS LOCATION, RF PC BOARD 1-32 CHASSIS SOLDER POINT CHASSIS SOLDER CHASSIS SOLDER POINT FIGURE 1-13. PARTS LOCATION, RF BOARD AUDIO AMPLIFIER IC (U AUDIO AMPLIFIER DRIVER OVERLAY CLIP AUDIO AMPLIFIER IC (U109) IC (U112) (109) IC (U110) I /CLIP CHASSIS SOL

39、DER POINT CHASSIS POINT HEADER HEAOER (P103) (PlOlA) HEADER TRIMMER AUDIO AMPLIFIER (P101B) CAP (C131, IC (U108) FIGURE 1-14. PARTS LOCATION, AUDIO/LOGIC PC BOARD l-33 CHASSIS SOLDER POINT SOLDER POINT CHASSIS SOLDER POlNT CHASSIS SOLDER POINT CHASSIS SOLDER POINT FIGURE 1-15. PARTS LOCATION, AUDIO/

40、LOGIC PC BOARD INSULATOR TOP COVER TOP COVER (107) 11031 I RF PC BOARD ASSEMBLY (115) CHASSIS ASSEMBLY (1 08) FIGURE 1-16. PARTS LOCATION, R/F BOARD, WITH INSULATOR l-34 CONNEC ANTENN (PI) TOR CONNECTOR CONNECTOR REMOTE INFINITY ONLY (P105) (P102) CABLE ASSEMBLY SPEAKER (P106) CABLE ASSEMBLY POWER (

41、P10) FIGURE 1-17. PARTS LOCATION, REAR VIEW 1-35 REPLACEMENT PARTS LIST,ELECTRONIC TUNED MULTIPLEX, CASSETTE RADIO REFERENCE PART NUMBER NUMBER DESCRIPTION DIODES, TRANSISTORS, ICS (RF BOARD ASSEMBLY, P/N 4393206-l: 4393206-2) Dl D2 Q1 : ;z ; Q8 Q9 QlO Ul u2 u3 u4 u5 U6 u7 4231205-A Diode, Switch 36

42、00875 Diode, Pin 4231205-A Diode, Switch 4234554-R Transistor, NPN, JFET 4234555-R Transistor, NPN 4234555-R Transistor, NPN 4234556-R Transistor, PNP 4232198-R92 Transistor, PNP 3596339-R Transistor, NPN 4230891-R Transistor, NPN 4232198-R92 Transistor, PNP 3596339-R Transistor, NPN 3596339-R Trans

43、istor, NPN 4234550 IC, AM Signal Processor 4234422 Module, A M RF Tuner 4233034 IC, AM Stereo Decoder 4234553 Module, FM RF/MIX/OSC 4393690, IC, FM Detector 4230078 IC, FM Stereo Decoder 4234423 Module, Filter - Amplifier DIODES, TRANSISTORS, ICS (AUDIO/LOGIC BOARD ASSEMBLY, P/N 4393222-1; 4393222-2

44、) DlOO 4231205-A Diode, S w i t c h DlOl 4231205-A Diode, Switch D102 4230853-A Diode, Zener, 5.6V D103 4231204-A201 Diode,Rectifier, 200V D104 4234567 Diode,Rectifier, 400V D105 4231204-A201 Diode,Rectifier, 200V D106 4233049-R Diode,Stabilizer, 2.38V QlOO 4232553-R92 Transistor, NPN QlOl 4232553-R

45、92 Transistor, NPN Q102 4232553-R92 Transistor, NPN Q103 3600963-R Transistor, NPN UlOO 4516271 IC, Microprocessor UlOl 4234590 IC, Quad 2-Input NAND U102 4234412 IC, Synthesizer U103 4234592 IC, Regulator 5V U104 4233042 IC, Regulator 1OV U105 4234545 IC, Audio Control 6300 l-36 REPLACEMENT PARTS L

46、IST, ELECTRONIC TUNED MULTIPLEX, CASSETTE RADIO REFERENCE NUMBER U106 4230862 U107 4234547 U108 4234547 U109 4234547 UllO 4234547 Ulll 4392808-R U112 4392807 D201 D202 D203 Q201 U201 U202 L24233116-Al Tl 4234551 T2 4234552 T3 4234558 Xl 4234539 x2 4393274-R FL1 4234549 FBl 3599705 FB2 3599705 Xl00 4

47、232720 LlOl 4234577 L102 4234577 L103 4393213 K100 4393212 PART NUMBER 4231205-A 4231205-A 4231200-A140 4234414-N 4392399 4234546 DESCRIPTION DIODES, TRANSISTORS, ICS (AUDIO/LOGIC BOARD ASSEMBLY, P/N 4393222-l: 4393222-2) IC, DNR IC, Audio Amplifier IC, Audio Amplifier IC, Audio Amplifier IC, Audio

48、Amplifier IC, Regulator, 5V IC, Driver Overlay DIODES, TRANSISTORS, ICs (CONTROL BOARD ASSEMBLY, P/N 4234484) Diode, Switch Diode, Switch Diode,Zener 14V Transistor, NPN Module, Static Display IC, A/D Converter CRYSTALS, COILS, TRANSFORMERS, FILTERS (RF BOARD ASSEMBLY, P/N 4393206-l: 4393206-2) Indu

49、ctor, Fixed 4.7 uHy Transformer, AM Antenna Transformer, AM IF Transformer, FM Detector Resonator, AM, Stop DET Resonator,AM, Radial Filter, AM IF Ferrite Bead Ferrite Bead Crystal, 3.96 MHz Inductor, Supply Filter, 600 uH Inductor, Supply Filter, 600 uH Inductor,Audio Filter, 800 uH Relay, DPDT l-37 REPLACEMENT PARTS LIST, ELECTRONIC TUNED MULTIPLEX, CASSETTE RADIO REFERENCE PART NUMBER NUMBER Cl c2 C4 c5 C6 C7 C8 C9 Cl0 Cl1 Cl2 Cl3 Cl4 Cl5 Cl6 Cl7 Cl8 cl.9 C20 C21 C22 C23 C24 C25 C26 C27 C28 4231063 RAY5S103M2 4231061- RACOG330J3 4231063- RAY5S473Ml 42306