IC1Panel u-CON
IC2LCD Driver
IC3Remocon IC
Q1V
Q2Key Illumination (Red) SWON when the base goes "H".
Q3Key Illumination (Green) SWON when the base goes "H".
Q4Remocon IC supply SWON when the base goes "L".
Q5Illumination (Red) SWON when the base goes "H".
Q6Illumination (Green) SWON when the base goes "H".
Q7Illumination (Blue) SWON when the base goes "H".
IC1System u-com
IC2E-VOL, N.C, MPX
IC3Regulator IC for Audio 8V
IC4Power IC
IC10Mute logic IC
IC11RDS decoder
IC13Motor driver IC
IC15Reset IC
Q1~4PRE OUT MUTE SWPre outs are muted when the base goes "H".
Q18~20Audio 8V AVR
Q21, 22B.U 5V AVR
Q23SW 5VON when the base goes "L".
Q24B.U detectionON when the base goes "H" during B.U applied.
Q25ACC detectionON when the base goes "H" during ACC applied.
Q26, 27P-ANT SWQ26 is turned ON when Q27's base goes "H".
Q28~31P-CON SWQ28 is turned ON when Q31's base goes "H".
Q32Dimmer SWON when the base goes "H" while vehicle small lamps turn on.
Q33, 34, 44 Illumination AVRON when Q44's base goes "H".
Q36SW 14VON when base goes "H".
Q37, 38Motor driver supplyQ38 is turned ON when Q37's base goes "H".
Q39External Amp ControlON when the base goes "L".
Q41, 42
Q43Motor driver's voltage SW
Q45, 46Panel 5V SWQ45 is turned ON when Q46's base goes "H".
Q71Pre out mute driverON when the base goes "L".
Q72E-VOL Mute SWON when the base goes "H".
Q73Noise buffer
Q85IFC out buffer
Q86, 88AM+B SWQ88 is turned ON when Q86's base goes "H".
Q87, 89FM+B SWQ89 is turned ON when Q87's base goes "H".
Q90Composite out buffer
AVRON when the base goes 9.1V during ILL+B applied.
LCD
Inverted darlington connection
Q20 is turned ON when Q18's base goes "H".
Inverted darlington connection
Q22 is turned ON when Q21's base goes "H".
Cassette mecha main motor
supply SW
Q42 is turned ON when Q41's base goes "H".
Base "H" ··· cassette mecha's submotor
IC1Playback EQ, Dolby & Blank Detection
Q1Constant Switching in Blank Detection Switches the time constant according to the PLAY or FF/REW mode.
3
Page 4
KRC-V879R/RY
MICROCOMPUTER'S TERMINAL DESCRIPTION
UPD703033GC049 (IC1: X14)
SYSTEM MICROCOMPUTER
PinNameI/OPurposeOperation Description
1AM+BOAM power supply terminal.During AM operation: H
2FM+BOFM power supply terminal.
3AFSOConstant switching when noise is detected.
4PLL-DATAI/O DATA input/output terminal from/to F/E.
5PLL-CLKI/O CLOCK input/output terminal from/to F/E.
6Evdd-Positive power supply terminal.
7GND-Grounding terminal.
8N.CONo connection.
9BEEPOBeep output terminal.
10REMOIRemote control input terminal.
11P-ONOSW 14 V control terminal.Power ON: H, Power OFF: L
12P-STBYOPower IC STBY terminal control.
13IC2-SDAI/O IC2 DATA line.
14IC2-SCKOIC2 CLOCK line.
15P-MUTEOPower IC muting terminal.
16PRE-MUTEOPre-Out muting terminal.During momentary power down: L
17
18TEST-Test pin.
19P-CONOPower control terminal.Power ON: H, Power OFF: L
20ANT-CONOAntenna control terminal.TUNER, TI ON: H
21MUTEOMuting terminal.
22N.CONo connection.
23ACC-DETIAcc detection terminal.Acc detected: L, Acc not detected: H
24DIMMERISmall detection terminal.ON: L, OFF: H
25SW-5VO5 V power supply terminal.ON: L, OFF: H
26CH-MUTEIMuting request from CH.ON: H, OFF: L
27CH-CONOCH control output.ON: H, OFF: L
28CH-REQHORequest output to CH.Requested: L
29CH-RSTOReset output to CH.
30EXT-AMP-CONTOExternal amplifier control terminal (In 200 ms).L 70 ms: Bass boost LOW
31RESETIReset input terminalNormal: H, Reset: L
32XT1ISub-clock connection terminal.
33XT2-Sub-clock connection terminal.
34REGC-
35X2-Main clock connection terminal.Power OFF or momentary power
SC CONPanel u-COM control.P-ON: H
Output terminal for the capacitor in the
regulator in u-COM.
During FM operation: H
Last FM with RDS model: H
During FM seek or AF search: L
During reception: H
Power IC OFF: L, Power IC ON: H
During reset: Input
Power OFF: L, All OFF: L
During TEL muting: L
ON: Open, OFF: L
The time constant is 0.48 ms with all
models.
Normal: L. When the system is
reset,turns H then L in 400 ms after
recovery from reset.
L 40 ms: Bass boost OFF
L 100 ms: Bass boost HIGH
The clock count is active even when
Power is OFF.
Power ON: Oscillated
down: Oscillation stopped
4
Page 5
KRC-V879R/RY
MICROCOMPUTER'S TERMINAL DESCRIPTION
UPD703033GC049 (IC1: X14)
SYSTEM MICROCOMPUTER
PinNameI/OPurposeOperation Description
36X1IMain clock connection terminal.
37Vss-Grounding terminal.
38Vdd-Positive power supply terminal.
39CLKOUTO Internal System Clock output.
40N.CONo connection.
50N.COOutputs Low. No connection.
51N.COOutputs Low. No connection.
52ILL-ONOFL +B output terminal.ON: H, OFF: L
53PAN-5VOPanel 5 V control terminal.
54N.COOutputs Low. No connection.
55BVdd-Positive power supply terminal.
56BVss-Grounding terminal.
57N.CNo connection.
58N.CNo connection.
59N.COOutputs Low. No connection.
60N.COOutputs Low. No connection.
61ST TYPE1IIC2 destination type terminal.Default: L
62ST TYPE0IIC2 destination type terminal.Default: L
63SRM-SW1IPanel position detection switch 1.
64PAN-RESETOReset output to Panel u-COM.Momentary power down: L
65MC-REQ/PANELREQ terminal for panel and u-COM.Panel detected: L
66SRM-SW3IPanel position detection switch 3.
67SRM-SW2IPanel position detection switch 2.
68FWD/REVOTAPE EQ input switching terminal.FWD: L, REW: H
69MS-CONTI/OTAPE input: L
70AVCONTOAD reference voltage control output.
71Avdd-Positive power supply terminal.
72Avss-Grounding terminal.
73AvrefI
74PHONEIPHONE detection terminal.
75R-REELICassette mechanism reel pulse input (REV).Vth = 2.5 V
Cassette mechanism main motorWhen the motor is running: H
output terminal.When it is stopped: L
Cassette mechanism/SRM mechanismCassette mechanism: H
voltage switching terminal.SRM mechanism: L
Normal: H, Reset: L, Panel detached: L
Microcomputer overrun: L
During TAPE PLAY: H
Constant switching terminal in case
of blank detection.
Reference voltage supply terminal for
A/D converter.
During TAPE FF/REW or other than
Cassette mechanism detected: L
Cassette mechanism not detected: H
Same timing as P-ON. H during
operation.
TEL MUTE: No more than 1 V
NAVI MUTE: 2.5 V or more
5
Page 6
KRC-V879R/RY
MICROCOMPUTER'S TERMINAL DESCRIPTION
UPD703033GC049 (IC1: X14)
SYSTEM MICROCOMPUTER
PinNameI/OPurposeOperation Description
76F-REELICassette mechanism reel pulse input (FWD).Vth = 2.5 V
77N.CINo connection.Connected to GND
78SRM-DETISRM mechanism detection.SRM mechanism detected: L
79NOISEIFM noise detection terminal.Model without RDS: Connected to GND
80S-METERISignal meter detection terminal.
81R-DATAIRDS decoder DATA input terminal.
82R-QUALIRDS decoder QUAL input terminal.
83IFC-OUTIF/E IFC OUT input terminal.Station detected: L
88CH-REQCIRequest input from CH.ON: L
89SC-REQCommunication request from Panel u-COM.
90N.CINo connection.Connected to GND.
91EQ-MUTEOEQ muting switching.
92MTLONORMAL/METAL switching.NORMAL: H, METAL: L
93BU-DETIMomentary power down detection terminal.
94CH-DATACIDATA input terminal from CH.
95CH-DATAHODATA output terminal to CH.
96CH-CLKI/OCLOCK input/output terminal from/to CH.
97SC-DATA DATA line from Panel u-COM.
98MC-DATADATA line to Panel u-COM.
99MC-CLK CLK line to Panel u-COM.
100N.COOutputs Low. No connection.
Model without RDS and
RBDS: Connected to GND
Model without RDS
and RBDS: Connected to GND
Music signal detected: L
Music signal not detected: H
Cassette pack detected: L
Cassette pack not detected: H
Model without RDS and
RBDS: Connected to GND
During TAPE PLAY: L
During TAPE FF/REW: H
Other than TAPE input: H
Back-Up detected: L
Back-Up not detected
(momentary power down): H
6
Page 7
KRC-V879R/RY
MICROCOMPUTER'S TERMINAL DESCRIPTION
UPD780076GK501 (IC1: X13)
Panel MicroComputer
PinNameI/OPurpose
1REMO_ONORemote control 5 V switching.
2REDO2-color LED switching.
3GREENO2-color LED switching.
4KR5-1IKey return port.
9Vss--
10VDD_0--
11-14KS4-1OKey scan port.
15MC_DATAIDATA input port from system u-COM.
16SC_DATAI/ODATA output port from Panel u-COM.
17MC_CLKICLK input port from system u-COM.
18L_CEOEnable output port to LCD driver.
19L_DATAODATA output port to LCD driver.
20L_CLKOCLK output port to LCD driver.
21NCO22TYPEIDestination type switching port.
23L_INHODisplay ON/OFF output port to LCD driver.
24Vdd_1-25AVss--
26-33N.C.INo connection (Fixed at GND).
34AVref-Connected to GND.
35NCONo connection (Open and outputs Low).
36RESETIReset port.
37XT2-Open.
38XT1IPulled up to VDD.
39TESTIFlash u-COM rewrite port (normally Low).
40X2-Main system clock.
41X1IMain system clock.
42Vss1-43MC REQIRequest input port from system u-COM.
44SC_CONIPanel u-COM ON/OFF port.
45SRCISRC detection.
46OPEN-EJECTIInterrupt port for OPEN/EJECT keys.
47CONT_GOSwitching output port to variable illumination. (Green)
48SC_REQORequest input port from Panel u-COM.
49NCO
50CONT_BOSwitching output port to variable illumination. (Blue)
51N.C.ONo connection.
52CONT_ROSwitching output port for variable illumination. (Red)
53EJECTIEjection detection port.
54-64N.C.ONo connection.
7
Page 8
KRC-V879R/RY
TEST MODE
M&T-SRT 2001 Model Test Mode
1. How to enter the test mode
• While holding the FM and Preset 6 keys, reset the unit.
2. How to exit from the test mode
• While holding the Preset 6 key, reset the unit.
• (Note) The test mode cannot be terminated by Acc OFF,
power OFF or momentary power down.
3. Initial status in the test mode
• Sources: All OFF.
• Display: All segments are lit.
• Volume: -10 dB (displayed as 30)
• Loudness: OFF
• CRSC: OFF regardless of the presence of switching
function.
• SYSTEM Q: Flat.
• Blank Skip: OFF. (C/R model)
• LED: White for no scanning. (VLCD model)
4. Special display in Tuner mode
• When any of the following messages is displayed in
Tuner mode, the front end may be abnormal.
• "TNE 2P NG": The EEPROM is set to the default (unstable values) because the F/E was shipped without passing
through the adjustment process, etc.
• "TNCON NG": Communication with the F/E is not possible.
5. Forced switching of K3I
• Each press of the Preset 6 key in Tuner mode should
switch K3I from AUTO î Forced Wide î Forced Middle
î Forced Narrow î AUTO. The initial status is AUTO
and the display shows these modes as follows.
• AUTO : FMA
• Forced Wide : FMW
• Forced Middle : FMM
• Forced Narrow : FMN
6. Test mode specifications of the CD receiver
• Forced ejection is inhibited in the reset start operation.
When the unit is reset while a CD is loaded in it, the CD
is not recognized by resetting.
• Each press of the Track Up key jumps to the following
track numbers.
No. 9 î No. 15 î No. 10 î No. 11 î No. 12 î No. 13
î No. 14 î No. 9 (The cycle restarts from here.)
• Each press of the Track Down key jumps to the previous
track number to the track being played.
7. Audio-related specifications
• A short press of the Q key initiates the audio adjustment
mode.
• Pressing the ✽ key on the remote initiates the audio
adjustment mode.
• Continuous holding of a remote control key is inhibited.
• Bass, Middle and Treble are adjusted in 3 steps of
Min/Center/Max with the Track Up/Down keys.
• Balance is adjusted in 3 steps of Left Max/Center/Right
Max with the Track Up/Down keys.
• Fader is adjusted in 3 steps of Rear Max/Center/Front
Max with the Track Up/Down keys.
• HPF is adjusted in 2 steps of Through/220 Hz with the
Track Up/Down keys.
• LPF is adjusted in 2 steps of Through/120 Hz with the
Track Up/Down keys.
• Bass f, Bass Q, Bass EXT, Middle f, Middle Q and Treble
f are not dealt with by the audio adjustment.
8. Menu-related specifications
• A short press of the CLK key initiates the Menu mode.
• Pressing the DNPP/SBF key on the remote initiates the
Menu mode.
• Continuous holding of a remote control key is inhibited.
• Calendar adjustment, calendar display switching and calendar memo are eliminated from the targets of continuous key holding. (FL model).
• In the color adjustment mode, pressing the Preset 1 key
sets Red, 2 sets Blue, 3 sets Green and 4 sets Green.
(VLCD model)
• Contrast is adjusted in 3 steps of 0/5/10 and the default
is 5. (VLCD/LCD model)
• Brightness is adjusted in 3 steps of 0/5/10 and the default
is 10. (Normal FL model)
9. Backup current measurement
• When the unit is reset while Acc is OFF (i.e. by turning
Back-Up ON), the MUTE terminal goes OFF in 2 seconds in place of 15 second. (The panel, CD mechanism
and TAPE mechanism are not activated at this time.)
8
Page 9
KRC-V879R/RY
TEST MODE
10. Special display when the display is All ON
Pressing the Preset keys while the power is All OFF displays the following information.
Version display
(8 digits, Month/Day/Hour/Minute)
PRESET1 (Display)
SYS xxxxxxxx System microcomputer
PAN xxxxxxxx Panel microcomputer
PRESET2
PRESET3 Long press/hold: Clear power ON time.
PRESET4
PRESET5 Long press/hold: Clear TAPE/CD/MD ejection
PRESET6 Long press/hold: Clear Panel open/close count.
Serial No. display (8 digits)
(Note) CD/R K type eXcelon model
(Display) SNo. xxxxxxxx
Short press: View power ON time.
(The All OFF period is not counted.)
• Automatic panel closing when a tape/CD is inserted is
inhibited. (M&T model)
• Panel operation by turning power OFF/ON is inhibited.
(M&T model)
• Pressing the ATT key opens or closes the panel. (M&T
model)
• Messages such as "CODE OFF" are not displayed when
power is turned ON.
• Pressing the TI (AUTO) key during changer operation
turns 2zone ON. 2zone can be turned OFF by pressing
the TI (AUTO) key again. The P/S dot lights while 2zone
is ON.
• Pressing and holding the CLK key for a second in the All
OFF status the Mask Key (security) write mode.
7 Security-related information
• Forced Power ON mode (All models)
Even when the security (Mask key) is approved, resetting the unit while holding the ATT and Preset 4 keys
makes it possible to turn the power ON for 30 minutes.
After 30 minutes have elapsed, it is not possible to return
to the previous condition unless the unit is reset again.
• Method of registration of the security code after
EEPROM (Tuner Unit Ass'y) replacement (Code
security model)
1. Enter the test mode. (See 1 How to enter the test
mode)
2. Press the CLK key to enter the security registration
mode.
3. Enter the code using the Preset 1/2/3/4 keys.
Example: To enter "3510"
• Press the Preset 1 key 4 times.
• Press the Preset 2 key 6 times.
• Press the Preset 3 key twice.
• Press the Preset 4 key once.
4. Press and hold the DISP key for 3 seconds until
"APPROVED" is displayed.
5. Exit from the test mode. (See 2 How to exit from the
test mode)
(Note) All Clear is not applicable to the security code of
this model.
• Simplified method of clearing the security code
(K Type only)
1. While the code entry is requested, press and hold the
VOL UP key for 3 seconds while holding the DISP key
pressed.(This should turn ---- off.)
2. Enter "KCAR" from the remote. (Same way as the 00
model)
Press the 5 key on the remote twice, then press the
Track Up key. (This enters "K")
Press the 2 key on the remote 3 times, then press the
Track Up key. (This enters "C")
Press the 2 key on the remote once, then press the
Track Up key. (This enters "A")
Press the 7 key on the remote twice, then press the
Track Up key. (This enters "R")
3. The security code is cleared and the unit enters the All
OFF mode.
4. If you commit a mistake in the code entry, the unit
enters the code request mode again.
9
Page 10
KRC-V879R/RY
• Method of writing the Mask key while the EEPROM is in the initial status
1. Enter the test mode. (See 1 How to enter the test mode)
2. Press the CLK key to enter the Mask key registration
mode. "TRANSMIT1" should be displayed now. The
display at this time should show "< >" in place of "[ ]".
3. Point the Mask key remote toward the light sensor, and
press and hold its key for more than 0.5 second.
4. When "TRANSMIT2" is displayed, press and hold the
key on the Mask key remote for more than 0.5 second
again. The first and second counter codes are not compared at this time.
5. When "APPROVED" is displayed, the write operation is
complete. Now the demonstration mode is initiated and
the test mode is terminated.
(Note) In the same way as previous models, if 30 minutes have elapsed with no code written, an error occurs
and the power is turned OFF.
• Method of initializing the Mask key (How to reset
the unit from the Mask key approved condition
to the factory condition)
1. Enter the test mode. (See 1 How to enter the test
mode)
2. "TRANSMIT1" is displayed and the Mask key entry
request mode is initiated.
The display at this time should show "✽✽" in place of "[ ]".
3. Press and hold the key on the Master key remote for
more than 3 seconds.
4. When "TRANSMIT2" is displayed, press and hold the
key on the Master key remote for more than 3 seconds.
5. When "APPROVED" is displayed, the Mask key is
cleared, the demonstration mode is initiated, the test
mode is terminated and the unit returns to the factory
condition.
TEST MODE
• Method of clearing all Mask key-related data
1. Enter the test mode. (See 1 How to enter the test
mode)
2. Press the CLK key to enter the Mask key registration
mode. "TRANSMIT1" should be displayed now.
3. Point the Master key remote toward the light sensor,
and press and hold its key for more than 3 seconds
(until the level display shows the full condition).
4. When "TRANSMIT2" is displayed, hold the key on the
Mask key remote for more than 3 seconds again.
If "TRANSMIT1" is displayed in place of "TRANSMIT2",
restart the procedure from step 3.
5. When "APPROVED" is displayed, all security data is
cleared and the unit returns to the condition before
Mask key writing with the EEPROM in the initial status.
10
Page 11
KRC-V879R/RY
NoITEMINPUT SETTINGS
OUTPUT
SETTINGS
TUNER
(RECEIVER)
SETTINGS
ALIGNMENT
POINTS
ALIGN FORFIG.
CASSETTE DECK SECTION
[1]AZIMUTH
TCC-153
10kHz
Connect a
AC voltmeter
to SP OUT
TAPE PLAY
Head Azimuth
Screw
Adjust the azimuth for each
Lch/Rch or FWD/RVS
becomes maximum
[2]
PLAY BACK
LEVEL
TCC-130
Connect a
AC voltmeter
to CN2
TAPE PLAY
VR1 (L)
VR2 (R)
(X87)
387.5mV (-6dBm)
Set the controls and switches as follows.
BALANCE :center position BASS :center position LOUD :OFF DOLBY NR :OFF
FADER :center position TREBLE :center position
tongue
Turn 2 times.
End of Roller ass'y
FPC
Assembly of FPC(Flexible PC board) onto Roller ass'y
Turn Roller ass'y by 2 times.
Hook the end of Roller ass'y to the tongue.
Insert the FPC into the slit of Roller ass'y then release the end of Roller ass'y and the tongue.
Refer to the schematic diagram for the value of resistors and capacitors.
1615
Page 15
BE
C2
C1
C3
R3
C4
R4
R1
R2
W11
W12
R6
R12
C12
R14
C14
C22
40
1
10
11
20
21
30
31
R11
C7
R5
C11
C17C21
C13
R9
C20
R10
C23
C24
R13
R8
R7
C8
C26
C25
W14
C4
W14
R4
C17
C24
31
30
R12
C26
C8
R14
C12
C14
R7
C22
W12
R6
20
21
R8
C23
R11
10
11
1
40
C13
R10
C21
C20
R9
C7
R5
C25
C11
EB
R13
R1
C1
W11
R2
C2
R3
C3
Q1
IC1
IC1
Q1
DOLBY R
DOLBY
DOLBY L
R
L
C15
VR1
C6
W2
W5
W3
W4
W7
W9
W1
W8
W6
VR2
C16
C5
13
1
2
4
5
13
1
W5
13
C16
W2
C5
W4
W3
W6
W7
1
W8
VR1
C6
DOLBY
W9
DOLBY R
VR2
W1
1
2
4
5
C15
L
DOLBY L
R
13
CN3
CN2
CN4
S1
X87-3022-71/3032-73 (J74-1148-12)
CN4
(J74-1148-12)
S1
CN3
CN2
X87-3022-71/3032-73
UWYVX
PC BOARD
1
Component side view
2
3
4
Foil side view
5
6
7
Refer to the schematic diagram for the value of resistors and capacitors.
17
Page 16
ABDCE
4.10V
4.10V
4.04V
8.11V
4.02V
4.06V
4.12V
4.10V
4.04V
4.16V
4.06V
4.02V
0V
1.23V
4.06V
4.06V
0V
4.06V
4.04V
4.03V
4.06V
4.06V
4.06V
0V
C :
OFF,B : 0.4V
DOLBY
: 0.4V
:B,C
OFF
DOLBY
REV
FWD
: 4.84V
: 0V
: 4.05V
: 0V
PLAY
FF,REW
PLAY
DPSS : 0V
: 2.9V
: 4.94V
0VPLAY
DPSS
METAL
ON
OFF
: 0V
: 4.84V
MUTE
: 0V
: 4.77VON
OFF
B
C
DOLBY
: 0V
: 4.73V
: 4.43VON
: 0VOFF
DOLBY
40
39
38
37
36
35
34
33
32
31
302928272625242322
21
11
12
13
14
15
16
17
18
19
20
1
2
345
678
9
10
PB FB1
PB R IN1
PB GND
PB F IN1
PB REF
VCT
PB F IN2
PB GND
PB R IN2
PB FB2
PBTC2
PB OUT2
OUT REF2
TAPE IN2
GND
DIREF
LINE OUT2
TCH2
TCL2
MS SW
G2FB
G1FB
MSTC
MS OUT
NR MODE
NR SW
MUTE SW
TAPE SW
DR SW
MODE
PBTC1
PB OUT1
OUT REF1
TAPE IN1
VCCNCLINE OUT1
TCH1
TCL1
MSLPF
MS MODE
7612345
+B 8V
OUT L
A GND
OUT R
ON/OFF
DOLBY
B/C
MS OUT
DOLBY
11 1 0 9 8
MTL
MUTE
F/R
1312
TAPE IN
D GND
L
GND
12R3
15
16
17
18
19
20
14
R9 2.7KC17 0.47
C20 R10 33K
4700P
R8 220K
0.47
C23
0.033
C13 0.1
47u10
C6
+
0.1
C11VR1
10K
0.01C71K
R13
5
4
3
2
1
5
4
3
2
1
20
16
17
18
19
14
15
C14 0.1
R7 20K
C12
0.1
10K
VR2
1K0.01
C8
33u10
+
+
33u50
C16
C15 33u10
+
C3 470P
180
R6
R5
180
R3 24K
C1 470P
R1 24K
470P
C2
24K
R2
PNK/BLKBLU
BU
1
YEL
EXT.
CONT
ILLMI
ORG/WHT
324
BLK
GND
ANT CONT
P. CON
BLU/WHT
RED
ACC
REAR L
REAR R
6
5
VIOL
GRN/BLK
VIOL/BLK
7
8
GRN
FRONT L
GRY
FRONT R
WHT/BLK
GRY/BLK
WHT
5713
8
RL+7RL-
351
RR-
FL+
FL-
FR-
FR+
RR+
642
B
PNK/BLK
BLU
8
GND
642
A
BU
ORG/WHT
1
2
YEL
EXT. CONT.
TEL MUTE
BRN
3
4
RED
BLK
BLU/WHT
P. CON
GRN/BLK
RR+5
VIOL
VIOL/BLK
RR-
RL-
6
7
RL+8
GRN
WHT/BLK
GRY
FR+
GRY/BLK
FR-
FL-
WHT
FL+
BU
1
GND
6
3
ILLMI
ORG/WHT
2
YEL
REAR R
4
5
VIOL
P. CON
RED
BLK
ACC
BLU/WHT
GRY
FRONT R
REAR L
GRN/BLK
VIOL/BLK
7
8
GRN
FRONT L
WHT/BLK
GRY/BLK
WHT
9
10
11
12
16
13
14
15
9
10
11
12
16
13
14
15
10
9
11
12
16
14
13
15
4.7
MS
ACC
KRC-V879R
NAME
MODEL
No.
UNIT
22-71
W11
10K
R14
24K
R4
C4
470P
W14
W12
C5
C24
KRC-709
32-73
KRC-889
KRC-779RY
KRC-V879RY
KRC-779R
R12
R11
ANT CONT
BLU
IC1 :
Q1 : DTC124EK
(X87-30XX-XX)
CN4CN2
Q1
S1
CN3
Rch
Lch
Rch
Lch
R
L
REV
FWD
PLAY
PACK
IN SW
(X87-30XX-XX)
CXA2560Q
(X87-30XX-XX)
IC1
TAPE MECHA (D40-1146)
(E30-4939)
KRC-889
DC CORD
KRC-779R/RY/V879R/RY
(E30-4942)
DC CORD
DC CORD
KRC-709
(E30-4940)
22K
22K
1
2
3
4
5
6
7
Page 17
FHJLNGIKMO
7.5V
7.5V
14.4V 7.5V
0V
7.5V 8.9V1.37V1.37V
7.5V
0V
14.4V
7.5V
0V-4.1V7.5V
0V
5.0V
0V
5V
0V
5V
0V
5V
5V
0V
0V
5V
0V
5V
0V
5V
13.7V
1.26V
13
2
0V
7.5V
7.5V
0V or 5.0V
13.5V
CAS:3.9V
SRM:7.5V
13.5V
0V
3.6V
4.15V
4.15V
4.15V
4.15V
4.15V
4.15V
0V
5V
4.15V
4.15V
0-4.5V
0-4.5V
3.0-4.9V
0.3-3.8V
5V
0V
0V
8.3V
4.15V
4.15V
4.15V
4.15V
0v
0V
0V
0V
0V
0V
5V
1.25V
1.45V
3.9V
3.9V
0.6V-
0.6V-
0.6V-
7.5V
3.9V
R109
22K
VIN VREF
R95
R96
C83 0.01
10u10
100u25
C85 100u6.3
+
C82
+
C84
22K
R93
100
R94
+
GND
4.3K
R89
220u10
C87
220
R92
15K
R901C86
24K
R87
2
1K
R108
1/2W
R107 4.7K
3.3u25
C90
R104 4.7K
SUB +
1
11
Q28,30,31
1/2W
19
1
2
3
4
0.068
C92
+
0.1u50
R110 1K
+
C91
141312
5
6
7
1098
12
0.47u50
C111
+
FL
RL
FL
3.9K
R136
FR
RR
TH1
10u16
C29
+
360
R9
13
FR+
RR+
FR-
RR-
C31
0.22u50
C33
0.22u50
+
10K
R13
10K
R11
22u16
C112
8
TAB
GND
RR-
STBY
RR+
VCC
FR-
1
2
356
7
4
FRIN
RRIN
FR+
SVR
GND
9
10
11
12
C34
0.22u50
0.22u50
1.5K
R134
C32
10K
R14
10K
R12
R23 22KR24 22K
FL+
FLIN
RLIN
AUX IN
RL+
GND
RL-
VCC
GND
14
15
1617181920
21
CD
MUTE
FL-
GND
22
23
24
25
RR+
FR+
RR-
FR-
RL-
FL+
FL-
RL+
2
3
10
RL-
FL+
RL+
FL-
12
9
FR-
RR-
FR+
RR+
ACC
TEL MUTE
P-CON
EXT CONT
ANT CON
GND
DIMMER
67345
1311121415
8
B.U.
16
FR
10u16
C30
+
360
R10
R37 22KR38 22K
4
3300u16
+
RL+
RL-
FL-
FL+
1u50
+
C114
15
195
4
3
62
11
10
12
13
8
7
REQ H
D GND
B.U.
CH CON
MUTE
A GND
RST
Rch
REQC
DATA C
DATA H
Lch
CH CLK
1
2
3
4
5
6
7
8
9
10
11
12
13
REQ H
B.U
MUTE
Rch
A GND
REQ C
RST
DATA C
CH CLK
Lch
DATA H
D GND
CH CON
R8
360
RR
C28
10u16
+
360
RL
10u16
+
R7
C27
0.1
C60
0.1
C59
R71 100
0.47u50
+
C1
10
R1
4.7R347u6.3
+
C3
R210C2
+
0.47u50
R74 4.7K
R72 4.7K
R73 4.7K
R75 4.7K
R76 4.7K
R77 47
47
R78
R80 100K
R81 100K
R82 100K
3
100K
100K12K
12K
R97
R98R102
R101
23
93
5.6K
R99
1000P
C88
3.3K
R100
18K
R103
0.01
C89
1/2W
16
21
5
6
7
27
26
28
96
95
10
12
12
10
10K
R111
R112
100K
0.01
C93
R117
1K
560
R114
30
24
C94 1u50
+
94
29
88
1.2K
R115
100K
R116
1K
R118
10K
R119
+
1/2W
∗R113
10K
0.01
∗C95
74
VDD
GND
22K
2.2K
C80
2200P
C81
R135
100
L12
0.01
C96
SUB -
23
+B
MOT
4
MOT
- G
5
3
MODE
6
MODE
1
5V
PON
2
MODE
R
REEL
ANODE
F
REEL
8711109
CP10 4.7K
1
GND2OUT 2
4
3
IN 1
OUT 3
7
8
6
5
VCC 1
VREF
IN 3
IN 2
10
9
OUT 1
VCC 2
1.2K
R120
2.2
R121
2.2
R122
0.22
C99
0.22
C98
1W1W
3
10
49
48
47
46
43
42
44
76
75
R190 120
41
9
96
11473
105
812
1
213
180
R34
180
R33
180
R48
180
R47
C35 0.047
C36 0.047
C37 0.047
C38 0.047
C42 0.047
C41 0.047
C40 0.047
C39 0.047
3
2
1
CREF
VREF
27
O FL
NC
25
26
NC
28
4
CAS L
CAS R
O FR
24
CD L
VDD
8
NC
GND
21
CD R
5
7
6
CD GND
O RL
O RR
22
23
S MUTE
MPX
12
LEVEL
QUAL
17
AFS
10
11
AM/IF
SDA
SCL
19
18
15
14
MP OUT
NC
MP IN
NC
9
20
16
13
+
C132
100u10
0.01
C131
4.7uH
L8
4.7K
R171
1K
R170
0.1
C137
0.01
C157
150P
C136
4.7K
R161
10K
R169
4.7K
R162
0.1
C138
0.033
C156
0.47
C135
C5 1
2.2u50
+
C133
C6 1
7
6
5
13
14
FR
FL
RR
RL
RR
RL
FR
FL
4
3
13
10
3
1K
R123
1K
R125
22K
R106
∗W103
1/2W
4
1/2W
20
0.1
C109
10K
R312
47K
R131
NC
12
31
R124
750
R126
2.2
11
52
25
∗C308
1
IC13
0.01
C108
0.015
C97
CONSTANT
D33
VOLTAGE
VARIABLE3
SW5V
Q20
B.U.5V AVR
Q21
Q22
Q23
D38
D39
D40
Q28
CN4
Q41
Q42
Q31
P-CON SW
MUTE
Q29
Q30
D52
D12
D14
D16
D18
POWER IC
Q2Q1
J1
Q3Q4
J3
D31
D17
D15
D11
D13
D51
D1
D3
J2
R-Rch
R-Lch
F-Lch
F-Rch
MUTE
OUT
D6D5
GND
GND
REARFRONT
PRE OUT
D21
D22
Q24
Q25
D36
B.U DET
ACC. DET
D37
D50
Q71
D32
Q32
D43
Q39
D42
Q38
Q37
D44
A8V AVR
EX. AMP
DIMMER
14V
AVR
DRIVER
MOTOR
CH CN
DC IN
PRE
OUT
MUTE
PRE
Q19
D45 D46
Q43
J3 TOP VIEW
TERMINAL
POWER
Q73
Q72
Q26
Q27
ANT.
CONT
∗ A
∗ B
Q18
MAIN
MOT + B
D53
Q34
Q44
Q33
ILL + B
SW 14V
Q36
D41
E-VOL. N.C.,MPX
MOTOR
DRIVER
IC3
IC10
IC4
(X14-64XX-XX)
IC13
IC2
47K
10K
22K
22K
22K
22K
47K
47K
2.2K
4.7K
10K
47K
4.7K
4.7K
4.7K
4.7K
47K
10K
22K
22K
47K
10K
22K
22K
22K
22K
CAUTION: For continued safety,
replace safety critical components
only with manufacturer's recommended parts (refer to parts
list).indicates safety critical
components. For continued protection against risk of fire, replace
only with same type and rating
fuse(s). To reduce the risk of electric shock, leakage-current or
resistance measurements shall be
carried out (exposed parts are
acceptably insulated from the supply circuit) before the appliance is
returned to the customer.
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal
input. The measurement value
may vary depending on the measuring instruments used or on the
product.
Manufacture under license
from Dolby Laboratories.
"Dolby" and the double-D symbol are trademarks of Dolby
Laboratories.
CAUTION: For continued safety, replace
safety critical components only with manufacturer's recommended parts (refer to
parts list).indicates safety critical components. For continued protection against
risk of fire, replace only with same type
and rating fuse(s). To reduce the risk of
electric shock, leakage-current or resistance measurements shall be carried out
(exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to the customer.
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The measurement value may vary depending on the
measuring instruments used or on the
product.
Manufacture under license from
Dolby Laboratories.
"Dolby" and the double-D symbol are
trademarks of Dolby Laboratories.
AFAHAEAGAJAIALAKANAMZABADAAAC
1
2
3
4
DTA123JK
DTA124EK
DTA144EUA
2SA1576A
2SC2412K
2SD2114K
DTC114YK
DTC124EK
DTC143TK
DTC144EK
BA6238ADAN202K
5
6
7
2SB1277
2SB1443
2SB11882SB11842SB1548
2SA1037KDTC144EUAUMC2N
DAP202K
TC74HC02AF
DA204U
M5237MLTDA7479D
KRC-V879R/RY
Page 20
58
56
57
52
53
54
CM1
CM2
25
21
24
45
23
65
65
66
66
67
67
10
11
1
31
30
34
33
9
9
HD1
17
15
4
22
12
12
20
5
6
7
26
48
48
49
27
94
91
92
94
KRC-V879R/RY
D
N
G
H
C
C
F
B
E
E
E
B
G
893
H
N
D
876
A
x2
Ax2
K
J
J
44
KRC-V879R/RY
EXPLODED VIEW(MECHANISM)
AB
1
2
3
Parts with exploded numbers larger than 700 are not supplied.
26
Page 21
M
M
N
N
N
N
ED1
(X13-995011)
(X13-9982-72)
265
211
273
244
785
790
714
286
288
288
214
219
209
267
268
233
753
269
266
272
270
271
215
285
287
F1
PS2
PS3
PS1
PM1
DC1
201
259
241
RM1
281
RM2
CME1
222
x2
PFPC1
(X87-3032-71)
(X87-3032-73)
J1
FPC2
T
U
U
U
U
P
P
P
P
P
KRC-V879R/RY
(X14-6442-70)
(X14-6452-72)
P
P
P
V
V
R
R
S
S
S
P
P
WH1
L
E
K
Q
Q
Q
D
L
B
B
A
A
F
J
J
B
B
P
x2
D
A
G
H
B
B
B
B
C
F
212
217
756
738
794
786
702
791
739
793
788
734
227
225
226
228
229
204
251
262
243
203
258
206
210
224
216
230
231
223
242
PME1
248
208
245
257
232
(X14)
(X16)
(X13)
(X16)
246
247
PA1
283
KRC-V879R/RY
EXPLODED VIEW(UNIT)
CD
1
2
3
27
Parts with exploded numbers larger than 700 are not supplied.
Page 22
KRC-V879R/RY
✻ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
K3CN29-0523-05RETAINING RING
2271CD13-2139-04GEARL3CN38-2025-46PAN HEAD MACHIN SCREW
2282CD13-2140-04GEARM3CN80-2005-46PAN HEAD TAPTITE SCREW
2292CD13-2141-14GEAR ASSYN3DN80-2008-45PAN HEAD TAPTITE SCREW
2302CD13-2165-03GEAR ASSYP1DN83-3005-46PAN HEAD TAPTITE SCREW
2312CD14-0754-04ROLLER
E4: KRC-V879R E6 : KRC-V879RY
E: Europe K: North America M: Other Areas
indicates safety critical components.
W: Without Europe
KRC-V879R/RY
SWITCH UNIT (X13-9950-11 /9982-72)
PARTS LIST
28
Page 23
KRC-V879R/RY
✻ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
E4: KRC-V879R E6 : KRC-V879RY
E: Europe K: North America M: Other Areas
indicates safety critical components.
W: Without Europe
SYNTHESIZER UNIT (X14-6442-70 /6452-72)
Parts without Parts No. are not supplied.
PARTS LIST
30
Page 25
KRC-V879R/RY
✻ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
E4: KRC-V879R E6 : KRC-V879RY
E: Europe K: North America M: Other Areas
indicates safety critical components.
W: Without Europe
SYNTHESIZER UNIT (X14-6442-70 /6452-72)
PARTS LIST
31
Page 26
KRC-V879R/RY
✻ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.