Kenwood KRC-Z965 User manual

©2002-2 PRINTED IN JAPAN
B51-7926-00 (S) 2142
CASSETTE RECEIVER
SERVICEMANUAL
KRC-Z965,X838
●
This service manual does not include information on the cassette mechanism operation description.
For such information, please refer to the cassette mechanism assembly service manual (D40-1122-05: B51-7452-00).
Front glass
(B10-4216-01) Panel assy
(A64-2653-11)
KRC-Z965
Front glass
(B10-4215-01) Panel assy
(A64-2652-11)
X838
Antenna adaptor
(T90-0523/0534/0552-05)
Screw set
(N99-1723-05)
:KRC-Z965
Screw set
(N99-1656-05)
Lever
(D10-4674-04)x2
Mounting
hardware assy
(J21-9823-03)
Plastic
cabinet assy
(A02-2712-13)
Remote controller assy
(A70-2026-05)
Escutcheon
(B07-3050-02)
DC cord
(E30-6063-05)
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KRC-Z965,X838
2
BLOCK DIAGRAM
SDA
SCL
S-METER SW5V
RDCK
FM
AM
SW5V
AUDIO OUT
BACK UP
DATA H
DATA C
MUTE
CH
SDA
RDDA BU5V
BU5V
DSI EJECT G EJECT R/G
(E) TYPE
TAPE
FM
AM 1512mV 866mV
3795mV
BU5V
PRE MUTE
PMUTE
PSTBY
MUTE
BEEP
AUX SW
TAPE/AUX
E-VOL OUT LEVEL
A8V
IFC OUT
SW5V
A8V
SCL
QUAL
AFS
SUB M+ SUB M- MOT +B
FWD/REV Lch
FWD/REV Rch Rch
Lch
A8V
A8V
A8V
REQ H
RST
REQ C
CH CON
CLK
A8V
A8V +B
-B
BACK UP
BU5VBU5V
MC REQ
SC CON
FL+B
RED
SI2
SI1
CLK
GREEN
KS1-KS4
KR1-KR5
F01-F06
WAVE
P5V
MC CLK
SC REQ
P RST
MC DATA
GCP
LAT
P5V
REMO
FL+B
FAC
BK
P5V
A8V
+B
-B
MOT+B
FAC
FL+B
MI-COM
MI-COM
SW5V MI-COM
BU5V
P5V MI-COM
REMO
O-DATA
O-CE
O-CLK
1.8V PRE
476mV
676mV
1695mV
(M) TYPE
4.5V PRE
AUX
CHANGER
QUAL
E'S OUT LEVEL PRE OUT LEVEL
MS OUT
DOLBY ON/OFF
MTL ON/OFF
MUTE
FWD/REV
MS MODE
F REEL
R REEL
MODE2
MODE1
MODE3
774mV 1377mV
(M) TYPE (E) TYPE
CHANGER
FM
AM
AUX
TAPE
1695mV
476mV
676mV
774mV
4.5V PRE
3795mV
866mV
1512mV
1733mV
1.8V PRE (M) TYPE (E) TYPE
AM
FM
CHANGER
AUX
TAPE
3717mV
848mV
1481mV
1698mV
1.8V PRE
4469mV
1254mV
1781mV
2041mV
4.5V PRE
SUB M+
SUB M-
251mV 215mV
1200mV
AUX : 1200mV
TAPE : 388mV
CH
F/E FM+B
PLL+B
AM+B
BUFF E-VOL
MI-COM
DECODER
RDS
ISO
AMP
OEM
EJECT LED
DSI
DISP
4.5V PRE
DC/DC
2WAY MUTE
ACC DET
DIMMER
TEL-MUTE
ACC
DIMMER
POWER IC
PRE AMP PRE OUT
SP OUT
MUTE
DRIVER
NOISE
BUFFER
P-CON P-CON
IF+B
CASSETTE
MECHA EQ DOLBY
AUX SW
OP AMP
E'S
SPEANA
AGC OP AMP
MUTE 4.5V
BU DET BACK UP
EX AMP CONT
EX AMP CONT
NAVI MUTE
RESET
DET
PANEL
KEY ILL
MATRIX
KEY
FL
SW
MI-COM
PANEL
SPEANA
BPF
REMO
RESET
REG
SW
BUFFER
3.3V
SW
VOLTAGE
LIMITER
DRIVER
MAIN MOTOR
BOX
DC/DC
A8V
SW14V
DC/DC
REG
BU5V
SW5V
PANEL5V
Q43,44
Q45,46
Q52
IC14
IC1
IC2
Q36 IC8,Q34
IC5
Q37-42 IC10-12
IC4
Q32,35
IC7
Q15
Q31
Q30
Q14
Q26-29
Q3
Q51
IC3,Q4-6
IC6,Q16-23
Q602,603
Q24,605
A1 Q10-13
Q7,8
Q2,476
IC16101
IC1
IC5
IC2
ED1Q1,2
Q7-10
IC3
IC4
IC20
IC21
EEP ROM
IC25
Q47,48,
(E) TYPE ONLY (M) TYPE ONLY (M) TYPE ONLY
ANT-CON
SUB MOTOR
DRIVER
Q5
(M) TYPE ONLY
(E) TYPE ONLY
EXCEPT (M) TYPE
(E) TYPE ONLY (E) TYPE ONLY
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KRC-Z965,X838
3
COMPONENT DESCRIPTION
●SWITCH UNIT (X16-1682-71)
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 TAR5S33 FL AVR +3.3V Output
IC2 TC74HC4050AFT Buffer For FL control lines, 5V →3.3V logic level shifting
IC3 RS-171 Remote sensor IC
IC4 BA3830F BPF IC BPF for the spectrum analyser indicator
IC5 UPD703032GFA04 Panel MI-COM.
Q1
DTA144EUA or UN5113
FL+B SW FL & Illumination AVR ON/OFF control. When Q2's base goes Hi, Q1 is turned on, and FL+B(45V) line is supplied to the FL indicator and
Q2 DTC114YUA or UN5214
the key illumination circuit.
Q3 DTA114EUA or UN5111 REMO SW When a base goes Lo, Q3 is turned on, and PAN5V line is supplied to
IC3 and IC4.
Q4 DTC114EUA or UN5211 FL blanking SW When a base goes Hi, Q4 is turned on, and FL indicator is lit.
Q6 DTC114YK or UN2214 SRC key illumination SW When a base goes Hi, Q6 is turned on, and SRC illumination is lit.
Q7 2SC4081 V-I converter Current driver for green LEDs
Q8 2SC4081 V-I converter Current driver for red LEDs
Q9 DTA114EUA or UN5111 Key illumination Red SW When a base goes Lo, Q9 is turned on, and key illumination Red is lit.
Q10
DTA114EUA or UN5111 Key illumination Green SW When a base goes Lo, Q10 is turned on, and key illumination Green is lit.
●ELECTRIC UNIT (X25-923X-XX)
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 UPD703033GFA19 System MI-COM.
IC2 TDA7407 E-VOL.& N.C. MPX
IC3 M5237ML AVR IC IC is combined with Q4, and it works as the error detection, the Q4's driver.
IC4 TDA7560 Power IC
IC5 TDA7401
High pass filter & Non-Fader
HPF (Front/Rear output), LPF, Non-Fader switching and volume function
volume
IC6 ICL7660SIBA DC/DC converter -9V AVR for pre-output amplifier
IC7 TC74HC02AF Mute logic 2-input NOR x 4
IC8 NJM4565M-TE2 Op. amp. Amplifier for the spectrum analyser and generation of Vref.(1/2Vcc) voltage
IC10 NJM4565M-TE2 Op. amp. Amplifier for the front pre-outputs
IC11 NJM4565M-TE2 Op. amp. Amplifier for the non-fader pre-outputs
IC12 NJM4565M-TE2 Op. amp. Amplifier for the rear pre-outputs
IC14 TDA7479D RDS decoder
IC16 S-80837ANNP Reset IC When BU 5V voltage is less than 3.7V, IC outputs Lo.
IC20 BA3121F Isolation amplifier AUX inputs isolation amplifier
IC21 BA3129F Switched op.amp. Input switching with AUX inputs and TAPE inputs
IC22 CXA2560Q Dolby IC PB EQ and Dolby IC
IC25 BR24C02F-W EEPROM
IC26 BA6219BFP-Y Sub motor driver Motor driver for the sub motor of cassette mechanism
Q2 2SC4081 BU 5V AVR While BACKUP is applied, AVR outputs +5V.
Q476 2SB1548(P) Q2 and Q476 are inverted Darlington connection.
Q3 2SA1037K SW 5V While a base goes Lo, SW 5V is supplied to the microprocessor
peripheral circuits.
Q4 2SA2057 A.+8V AVR Q4 is combined with IC3, and it works as the power supply of +8.0V output.
Q5 DTC144EUA or UN5213
A.+8V AVR SW When Q5's base goes Hi, Q6 is turned on, and A.+8V AVR is working.
Q6 DTA124EUA or UN5112
Q7 DTA124EUA or UN5112
SW14V When Q8's base goes Hi, Q7 is turned on, and A.+8V AVR, Voltage
Q8 DTC144EUA or UN5213 limiter and A.+10V AVR are working.
Q10 2SA2057 FL/Illumination AVR When Q11's base goes Hi, AVR outputs +9V.
Q11 2SC4081
Q12 DTC124EUA or UN5212
FL/Illumination AVR SW
When Q12's base goes Hi, Q13 is turned on, and FL/Illumination AVR
Q13 DTA124EUA or UN5112 is working.
Q14 DTA123JK or KRA105S EXT. AMP CON. SW When a base goes Lo, Q14 is turned on, and control pulse signal is outputted.
Q15 DTC144EUA or UN5213 Dimmer detection SW When vehicle small lamps turn on, Q15's base goes Hi, and it is turned on.
Q16 2SB1443 A.+10V AVR When Q17's base becomes Hi, AVR outputs +10V.
Q17 2SC4081
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KRC-Z965,X838
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Q18 2SA1576A Q18 and Q20 work as a differential amplifier, Q19 works as a driver,
Q19 2SC4081 PRE-AMP -9V AVR and -9.3V is supplied to OP AMP.
Q20 2SA1576A
Q21 2SC4081 Q21and Q22 work as a differential amplifier, Q23 works as a driver,
Q22 2SC4081 PRE-AMP +9V AVR and +9.7V is supplied to OP AMP.
Q23 2SA1576A
Q24 2SB1443 Main motor SW When Q605's base goes Hi, Q24 is turned on, and BU line is supplied
Q605 DTC114YUA or UN5214 to the main motor.
Q26 2SB1277(Q,R) P-CON SW When Q29's base goes Hi, Q26 is turned on, and P-CON signal is outputted.
Q29 DTC124EUA or UN5212 Works during POWER ON mode.
Q27 2SA1576A P-CON. protection SW Protect Q26 by turning ON when P-CON output is grounded.
Q28 DTA124EUA or UN5112 P-CON. protection inhibit SW Prevents Q27 tuning ON during start-up after power ON.
While BACKUP is applied, a base goes Hi, and Q30 is turned on.
Q30 2SC4081 BU detection SW When momentary power down has detected, a base goes Lo, and
Q30 is turned off.
Q31 2SC4081 ACC detection SW While ACC is applied, a base goes Hi, and Q31 is turned on.
Q32 DTA124EUA or UN5112 Mute driver When BU detection SW or System RESET or MI-COM.'s MUTE is
working, a base goes Lo, and Q32 is turned on.
Q34 2SC4081 AGC for spectrum analyser
Q35 DTC124EUA or UN5212 E. VOL. mute SW When BU detection SW or MI-COM.'s mute is working, a base goes
Hi, and Q35 is turned on.
Q36 DTC143TUA or UN5216 Noise buffer
Q37 DTC143TUA or UN5216 Audio mute SW (Front R) When Q37's base goes Hi, Pre-output is muting.
Q38 DTC143TUA or UN5216 Audio mute SW (Front L) When Q38's base goes Hi, Pre-output is muting.
Q39 DTC143TUA or UN5216 Audio mute SW (Non Fader L) When Q39's base goes Hi, Pre-output is muting.
Q40 DTC143TUA or UN5216 Audio mute SW (Non Fader R) When Q40's base goes Hi, Pre-output is muting.
Q41 DTC143TUA or UN5216 Audio mute SW (Rear R) When Q41's base goes Hi, Pre-output is muting.
Q42 DTC143TUA or UN5216 Audio mute SW (Rear L) When Q42's base goes Hi, Pre-output is muting.
Q43 DTC124EUA or UN5212
FM+B SW When Q43's base goes Hi, Q44 is turned on, and A.+8V is supplied to
Q44 CPH3105 the F/E. Works during FM reception mode or RDS reception mode.
Q45 DTC124EUA or UN5212
AM+B SW When Q45's base goes Hi, Q46 is turned on, and A.+8V is supplied to
Q46 CPH3105 the F/E. Works during AM reception mode.
Q47 DTA114YUA or UN5114 Eject green LED SW When a base goes Lo, Q47 is turned on, and Eject green LED is lit.
Q48 DTA114YUA or UN5114 Eject red LED SW When a base goes Lo, Q48 is turned on, and Eject red LED is lit.
Q51 2SB1427 PAN5V SW For PAN5V on/off switching. When a base goes Lo with panel attached
to the set, Q51 is turned on, and PAN5V is supplied to the panel.
Q52 DTC143TUA or UN5216 Composite signal buffer
Q101 DTA114YUA or UN5114 DSI LED SW When a base goes Lo, Q101 is turned on, and DSI illumination LED is lit.
Q103 DTC124EUA or UN5212 AUX/TAPE selector SW
When a base goes Hi, AUX inputs are selected.
When a base goes Lo, TAPE inputs are selected.
Q602 2SB1443 Voltage limiter When Q603's base goes Hi, Q604 is turned on, and BU line is supplied
Q603 2SC4081 to the sub motor driver.
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
COMPONENT DESCRIPTION
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KRC-Z965,X838
5
●IC5 (SWITCH UNIT : X16-1682-71)
Pin No. Pin Name I/O Description Processing Operation
1 SC DATA I/O Data input/output with the system MI-COM.
2 MC CLK I Clock input from the system MI-COM.
3 NC O Not used(N.C.)
4 DATA 1 O Data output 1 to the FL driver IC
5 CLK O Clock output to the FL driver IC (Data shift by the rise edge of the pulse)
6 NC O Not used(N.C.)
7 DATA 2 O Data output 2 to the FL driver IC
8 CLK IN I Clock input from the FL driver IC (Data shift by the rise edge of the pulse)
9 EVDD - Positive power supply connection terminal Connected to P5V lines.
10 EVSS - Ground connection terminal Connected to GND lines.
11 RED LED O
Illumination red ON/OFF output in case of two colours
/Illumination ON/OFF output in case of one colour
Lo: ON, Hi: OFF
12 GREEN LED O
Illumination green ON/OFF output in case of two colours Lo: ON, Hi: OFF in case of two colours
/Not used in case of one colour /Not used(N.C.) in case of one colour
13 REMO I Data input from the remote control light sensor
14 LATCH O Latch output to the FL driver IC Lo: Latch, Hi: Through
15 GCP O Control pulse output to the FL brightness
16 REMO ON I/O
Power supply ON/OFF output to the remote control
light sensor IC and BPF IC Lo: ON, Hi-z: OFF
17-19 NC O Not used(N.C.)
20 BLK O Display ON/OFF control output Lo: Display OFF, Hi: Display ON
21 TEST I Test terminal Not used(Connected to GND lines)
22-33 NC O Not used(N.C.)
34 RESET I Reset terminal Lo: Reset, Hi: Reset release
35 XT1 - Sub clock resonator connection terminal Not used(Pull down to GND lines)
36 XT2 - Sub clock resonator connection terminal Not used(N.C.)
37 REGC -
Capacitor connection terminal for regulator inside
microprocessor
38 X2 - Main clock resonator connection terminal
39 X1 - Main clock resonator connection terminal
40 VSS - Ground connection terminal Connected to GND lines.
41 VDD - Positive power supply connection terminal Connected to P5V lines.
42-47 NC O Not used(N.C.)
48 FL +3.3V O FL VDD ON/OFF output Lo: OFF, Hi: ON
49 FL+B I/O FL+B ON/OFF output Hi-Z: OFF, Hi: ON
50-55 NC O Not used(N.C.)
56 BLUE LED I/O Source key LED ON/OFF output Hi-Z: OFF, Hi: ON
57 NC O Not used(N.C.)
58 BVDD - Positive power supply connection terminal Connected to P5V lines.
59 BVSS - Ground connection terminal Connected to GND lines.
60-71 NC O Not used(N.C.)
72 SA RESET O Reset output to the BPF IC Hi: Reset
73 NC O Not used(N.C.)
74 AVDD - A/D converter positive power supply connection terminal Connected to P5V lines.
75 AVSS - A/D converter ground connection terminal Connected to GND lines.
76 AVREF - A/D converter reference voltage input terminal
77 F01 I BPF(63Hz) input
78 F02 I BPF(150Hz) input
79 F03 I BPF(330Hz) input
80 F04 I BPF(1kHz) input
81 F05 I BPF(3.3kHz) input
82 F06 I BPF(10kHz) input
83 WAVE IN I Audio input
84 KR5 I Key return 5 input
85 KR4 I Key return 4 input
86 KR3 I Key return 3 input
87 KR2 I Key return 2 input
MICROCOMPUTER'S TERMINAL DESCRIPTION
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