Yamaha CRX-E400 User manual

SERVICE MANUAL
■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . .2
FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . .2–3
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . .6–7
TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8–9
AMP ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . .9
IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10–12
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . .14–17
PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . .18
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . .19–20
DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21–28
REMOTE CONTROL TRANSMITTER . . . . . . . . . . . .29
SYSTEM CONTROL . . . . . . . . . . . . . . . . . . . . . .30–38
NX-E400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
PARTS LIST FOR CARBON RESISTORS . . . . . . . . 40
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA
Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
IMPORTANT NOTICE
100809
SERVICE MANUAL
RX-E400/NX-E400
MINI COMPONENT SYSTEM CRX-E400
The CRX-E400 is composed of the RX-E400 and the CDX-E400.
This service manual is for the RX-E400 (including NX-E400).
For the CDX-E400 service manual, please refer to the following publication numbers :
CDX-E400 100808
RX-E400

RX-E400
2
RX-E400
■ TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked Z
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
●Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
AC LEAKAGE
TESTER OR
EQUIVALENT
EQUIPMENT
UNDER TEST
INSULATING
TABLE
WALL
OUTLET
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR
ANY REASON WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes
or expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.
▼ U, C, R, A models
■FRONT PANELS
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both
polarities.
“CAUTION”
“F232 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 3.15A, 125V FUSE.”
CAUTION
F232 : REPLACE WITH SAME TYPE 3.15A, 125V FUSE.
ATTENTION
F232 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 3.15A, 125V.
AV

RX-E400
RX-E400
3
▼ B, G models
■REAR PANELS
▼ U, C models
▼ R model
▼ A model
▼ B model
▼ G model

RX-E400
4
RX-E400
■ FM SECTION
Tuning Range
U, C models . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 107.9MHz
A, B, G models . . . . . . . . . . . . . . . . . . . 87.50 to 108.00MHz
R model . . . . . . . . . . . . . . 87.5 to 108.0/87.50 to 108.00MHz
Usable Sensitivity (75 Ω)
Mono (S/N 30dB) U, C, R models . . . . . . . . . . . . . . . . 1.0µV
Alternate Channel Selectivity
U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70dB
Signal-to-Noise Ratio
Mono/Stereo (IHF)
U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76/70dB
Harmonic Distortion
Mono/Stereo (1kHz) . . . . . . . . . . . . . . . . . . . . . . . . 0.2/0.3%
Stereo Separation
1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45dB
Frequency Response
20Hz to 15kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5/-2.0dB
Antenna Input . . . . . . . . . . . . . . . . . . . . . . . . . 75Ωunbalanced
■ AUDIO SECTION
Minimum RMS Output Power Per Channel
20Hz to 20kHz, 0.1% THD, 6Ω. . . . . . . . . . . . . 40W + 40W
1kHz, 0.1% THD, 6Ω. . . . . . . . . . . . . . . . . . . . . 55W + 55W
Maximum Power Per Channel (EIAJ)
1kHz, 10% THD, 6Ω(R model only) . . . . . . . . . 65W + 65W
Dynamic Power Per Channel (IHF)
6Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60W + 60W
4Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75W + 75W
2Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100W + 100W
DIN Standard Output Power Per Channel
1kHz, 0.7% THD, 4Ω(G model only) . . . . . . . . . 60W + 60W
Dynamic Headroom (6Ω)
U, C, models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.76dB
IEC Power Per Channel
1kHz, 0.1% THD, 6Ω(G model only) . . . . . . . . . 55W + 55W
Power Band Width
0.1% THD, 30W/6Ω. . . . . . . . . . . . . . . . . . . 10Hz to 50kHz
Damping Factor
20Hz to 20kHz, 6Ω. . . . . . . . . . . . . . . . . . . . . . . .60 or more
Input Sensitivity/Impedance
CD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/47kΩ
Maximum Input Signal Level (1kHz, 0.5% THD)
CD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0V
Output Level/Impedance
REC OUT (MD, TAPE) . . . . . . . . . . . . . . . . . . 150mV/1.2kΩ
SUB WOOFER (50Hz) . . . . . . . . . . . . . . . . . . . . . 2.0V/680Ω
Headphone Jack Rated Output/Impedance
CD, etc 1kHz, 150mV, 8Ω. . . . . . . . . . . . . . . . . 0.43V/330Ω
Frequency Response (20Hz to 20kHz)
CD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0±0.5dB
Total Harmonic Distortion (20Hz to 20kHz)
CD, etc to SP OUT (20W/6Ω) . . . . . . . . . . . . . . . . . . 0.04%
Signal-to-Noise Ratio (IHF-A-Network)
CD, etc, Input Shorted (150mV) . . . . . . . . . . . . . . . . . . 93dB
Residual Noise (IHF-A-Network)
SP OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100µV
Channel Separation (Vol. –30dB)
CD, etc, Input 5.1kΩShorted, 1kHz/10kHz . . . . .60dB/45dB
Tone Control Characteristics
BASS : Boost/cut . . . . . . . . . . . . . . . . . . . . ±10dB (50Hz)
Turnover Frequency . . . . . . . . . . . . . . . . . 350Hz
TREBLE : Boost/cut . . . . . . . . . . . . . . . . . . . ±10dB (20kHz)
Turnover Frequency . . . . . . . . . . . . . . . . . 3.5kHz
Filter Characteristics
SUB WOOFER (L.P.F.) . . . . . . . . . . . . . fc = 100Hz, 6dB/oct.
■SPECIFICATIONS
■ AM SECTION
Tuning Range
U, C models . . . . . . . . . . . . . . . . . . . . . . . .530 to 1710kHz
A, B, G models . . . . . . . . . . . . . . . . . . . . . .531 to 1611kHz
R model . . . . . . . . . . . . . . . . 530 to 1710/531 to 1611kHz
Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . 300µV/m
Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loop antenna
■GENERAL
Power Supply
U, C models . . . . . . . . . . . . . . . . . . . . . . . . AC 120V, 60Hz
A model . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 240V, 50Hz
B, G models . . . . . . . . . . . . . . . . . . . . . . . . AC 230V, 50Hz
R model . . . . . . . . . . . . . . AC 110/120/220/240V, 50/60Hz
Power Consumption
U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110W
R, A, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . 125W
Standby Power Consumption
U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7W
A, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8W
Maximum Power Consumption
1kHz, 10% THD, 2ch, 6Ω(R model only) . . . . . . . . . 255W
AC Outlets
U, C, R, G models, Switched x 2 . . . . . . . 100W max (Total)
A, B models Switched x 1 . . . . . . . . . . . . . . . . . . . 100W max
Dimensions (W x H x D) . . . . . . . . . . . . . . 217 x 108 x 372mm
(8-9/16" x 4-1/4" x 14-5/8")
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4 kg (11 lbs. 14 oz)
Finish
U, C, R, A, G models . . . . . . . . . . . . . . . . . . . . . . Gold color
U, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . Silver color
Accessories of CRX-E400 . . . . . . . . . . . AM loop antenna x 1
Indoor FM antenna x 1
Remote Control x 1
Battery (size "UM-3", "R06") x 2
Audio Pin Cable x 1
System Control Cable x 1
* Specifications subject to change without notice.
U ....... USA model
C ....... Canadian model
A ....... Australian model
B ....... British model
G ....... European model
R ....... General model
RX-E400

RX-E400
RX-E400
5
* Specifications subject to change without notice.
■INTERNAL VIEW
qPOWER TRANSFORMER
wMAIN (6) P.C.B.
eAM/FM TUNER
rMAIN (2) P.C.B.
tOPERATION P.C.B.
yMAIN (4) P.C.B.
uMAIN (1) P.C.B.
iMAIN (3) P.C.B.
● DIMENSIONS (RX-E400)
Unit : mm (inch)
217 (8-9/16")
8
(5/16") 100 (3-15/16")
108 (4-1/4")
22
(7/8")
15
(9/16") 335 (13-3/16")
372 (14-5/8")
■ SPEAKER SECTION (NX-E400)
Type . . . . . . . . . . . . 2way Bass-reflex Magnetic Shielding Type
Driver
Woofer . . . . . . . . . . . . . . . . . . . . . . 13cm (5-1/8") Cone Type
Tweeter . . . . . . . . . . . . . . . . . . . . . . . 2.5cm (1") Dome Type
Frequency Response . . . . . . . . . . . . . . . . . . . . 55Hz to 28kHz
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Ω
Nominal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60W
Maximum Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110W
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87dB/2.83V,1m
Crossover Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3kHz
Input Terminal . . . . . . . . . . . . . . . . . . . . . . Screw/Banana Type
Dimensions (W x H x D) . . . . . . . . . . . . . . 186 x 300 x 223mm
(7-5/16" x 11-13/16" x 8-3/4")
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 kg (9 lbs. 7 oz)
Finish . . . . . . . . . . . . . . . . . . . . . . . . . . High Gloss Piano Finish
Accessories . . . . . . . . . . . . . . . . . . . . Speaker Cable (4m) x 2

RX-E400
6
RX-E400
1. Removal of Top Cover
a. Remove 4 screws ( q ) and 4 screws ( w ) in Fig. 1.
b. Lift the Top Cover at the rear and move it rear-ward slantingly.
2. Removal of Front Panel
a. Disconnect 4 connectors (CB251, CB253, CB210, CB406) in Fig. 2.
b. Remove 2 screws ( e), 3 screws
( r ) and 1 plastic rivet ( t ) in Fig. 1.
c.
Release 2 hooks and remove the Front Panel Unit by pulling it forward.
■DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.)
Fig. 1
q
w
w
Fig. 2
q
Top Cover
w
Front Panel Unit Hook
e
r
Hook
e
r
Operation P.C.B.
Front Panel Unit
Main (3) P.C.B.
Main (2) P.C.B.
CB210
CB406
CB253
CB251
Main (1) P.C.B.
t

RX-E400
RX-E400
7
●Servicing Position
a. Remove theTop Cover and the Front Panel Unit.
b. Remove 6 screws ( y ) in Fig. 3.
c. Remove 5 screws ( u ) in Fig. 3.
d. Remove 3 screws ( i ) in Fig. 3.
e. Remove the Power Transformer and Main P.C.B. (with the rear panel attached) from the main
chassis.
f. With the rear panel attached, set the Main P.C.B on its side.At this time, set the Power Trans-
former on its side as well in Fig. 4.
g. Using a lead wire or the like, connect G250 of the Main (1) P.C.B. with the rear panel in Fig. 4.
h. With the Front Panel Unit set on its side, connect 4 connectors (CB251, CB253, CB210, CB406)
in Fig. 5.
i. Connect the power cable, turn on the power and check for operation.
Fig. 3
y
Main Chassis
y
u
i
u
Main (1) P.C.B.
G250
Lead Wire
Power Transformer
Rear Panel
Fig. 4
Fig. 5
Front Panel Unit
CB210 CB406
CB253
CB251

RX-E400
8
RX-E400
■TEST MODE
STANDBY/ON Key is pushed while pushing DISPLAY Key and AUTO/MAN'L Key.
TEST MODE indication.
PRESET/TUNING BKey
Test mode number
up.
PRESET/TUNING NKey
Test mode number
down.
PRESET/BAND Key
Execute test mode.
STANDBY/ON Key
POWER OFF
The completion
of test mode.
POWER Off condition
TEST MODE UP TEST MODE DOWN When present mode is
carried out.
Test mode is
finished.
DISPLAY
FUNCTION PRESET/BAND Key
01 DEST-B,G
02 FL+CLEAR
DESTINATION R (AM9k/FM:50k) R (AM10k/FM100k) A B,G U,C
Display R9k R10k A B, G U, C
(*1)
03 FL CHECK
04 Ver-A1.10
05 SUM[Caa2
04'99.05.28
TEST PROGRAM MODE FUNCTION DESCRIPTION
Indication for destinaion. (*1)
All FL segments and BACKUP
RAM CLEAR.
All FL segments and circuit
board short circuit inspection.
Version information of the
microcomputer software. (*2)
The date of the microcomputer
software. (*2)
The calculation of SUM is done and
indicated after that. (*2)
1st : all segments light
2nd : RAM CLEAR
1st : all segments light
2nd : Even-numbered
segments and even
numbered digits are
turned on.
3rd : Odd -numbered
segments and odd-
numbered digits are
turned on.
It is changed to the date
indication.
It is changed to version
indication.
Re-calculation
(*2) Contents of indication change by the microcomputer software.
(Note that memories set by the user
will be erased.)
Also, the preset contents of the
tuner are restored to the factory
preset ones.
PRESET
EDIT
VOLUME
RDS PS PTY RT CT
PTY HOLD
STEREO AUTO TIMER
SLEEPTUNED MEMORY
TIMER
EDIT
VOLUME
RDS PTY CTSTEREO AUTO TIMER
PRESET
PS RT
PTY HOLD SLEEPTUNED MEMORY
TIMER
PRESET
EDIT
VOLUME
RDS PS PTY RT CT
PTY HOLD
STEREO AUTO TIMER
SLEEPTUNED MEMORY
TIMER
FL CHECK
1st
2nd
3rd

RX-E400
RX-E400
9
Preset group
A
B
C
D
E
P1 P2 P3 P4 P5 P6 P7 P8
CAUTION : When executing Test mode No. 2 RAM CLEAR, be sure to write down the preset memory contents of the
tuner, using a table like the one shown below. Execution of RAM CLEAR will set the memory contents of the
tuner back to the factory preset state which means that all the memories preset by the user will be erased.
●FACTORY PRESET
NOTE 1) PRESET PAGE ................................................. A : FM B : AM C : FM D : AM E : FM
BAND
FM (MHz)
AM (kHz)
MARKETS
U, C, R (100k/10k)
A, B, G, R, (50k/9k)
U, C, R (100k/10k)
A, B, G, R (50k/9k)
8
107.9
107.90
1440
1440
7
106.1
106.10
1350
1350
6
88.1
88.10
900
900
5
107.9
108.00
1710
1611
4
101.5
101.50
530
531
3
87.5
87.50
1400
1404
2
95.1
95.10
1080
1080
1
98.1
98.10
630
630
PRESET No.
■AMP ADJUSTMENTS
●Confirmation of Idling Current
1) No signal applied.
2) Non-loaded condition.
3) Aging is not neccessary.
Note
If the measured voltage exceeds 2.5mV, cut the lead wire of R308(L ch)
or R309(R ch) and then check again if each measured value satisfies the
rating.
Item
MAIN L
MAIN R
Test Point
R319
(Between terminal)
R320
(Between terminal)
Rating (DC)
0.05mV—2.5mV
Note)
•If R308(L ch) or R309(R ch) have already been cut off and
idling current does not flow, reconnect R308(1kΩ) or
R309(1kΩ).
•Q261 and Q262 are transistors for temperature correction.
Apply silicone grease to the contact surface with the heat
sink.
R308 (L ch)
R309 (R ch)
Cut OFF
0.05mV ~ 2.5mV (DC)
R319 (L ch)
R320 (R ch)
R319
R309 R320
R308
Q262
Q261
* Confirm that the idling current is 0.125mV —7.5mV after 60 minutes.

RX-E400
10
RX-E400
■IC DATA
No. PORT Name IN/OUT Function
1 P97 Fan dr OUT Not used
2 P96 RLY PW OUT Power supply relay (Power ON) OUT [0:OFF 1:ON]
3 P95 VOL DN OUT Motor VR DOWN OUT [1:DOWN]
4 P94 VOL UP OUT Motor VR UP OUT [1:UP]
5 P93 ENC B IN Rotary encoder-B IN [Pull-up resistor]
6 P92 ENC A IN Rotary encoder-A IN [Pull-up resistor]
7 P91 LED T OUT Timer LED OUT [0:OFF 1:ON]
8 P90 LED S OUT Not used
9 CNVSS CNVss - Connected to VSS(GND) via resistor(5.1kΩ)
10 P87 Xin - 32.768KHz IN (Feedback resistor included)
11 P86 Xout - 32.768KHz OUT (Feedback resistor included)
12 RESET Reset - RESET [0:RESET]
13 XOUT 10Xout - 10MHz OUT (Feedback resistor included)
14 VSS Vss - GND
15 XIN 10Xin - 10MHz IN (Feedback resistor included)
16 VCC Vcc - Power supply +5V [Backup capacitor required]
17 P85 Sys O OUT System control OUT
18 P84 Sys I IN System control IN
19 P83 RLY SP OUT Speaker relay OUT [0:OFF 1:ON]
20 P82 Pro I IN Amplifier current detect IN (protection) [1:Abnormality exists]
21 P81 Rem INT-IN Remote control IN
22 P80 PD INT-IN Power-down DC detect IN [0:POWER DOWN]
IC700 : M30217M8-A103FP (16 bit µ-COM)
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
P67/FLD7
P66/FLD6
P65/FLD5
P64/FLD4
P63/FLD3
P62/FLD2
P61/FLD1
P60/FLD0
VEE
P107/AN7
P106/AN6
P105/AN5
P104/AN4
P103/AN3
P102/AN2
P101/AN1
AVSS
P100/AN0
VREF
AVCC
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
P50/FLD8 P51/FLD9 P52/FLD10 P53/FLD11 P54/FLD12 P55/FLD13 P56/FLD14 P57/FLD15 P00/FLD16 P01/FLD17 P02/FLD18 P03/FLD19 P04/FLD20 P05/FLD21 P06/FLD22 VSS P17/FLD23 VCC P10/FLD24 P11/FLD25 P12/FLD26 P13/FLD27 P14/FLD28 P15/FLD29 P16/FLD30 P17/FLD31 P20/FLD32 P21/FLD33 P22/FLD34 P23/FLD35
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
P24/FLD36
P25/FLD37
P26/FLD38
P27/FLD39
P30/FLD40
P31/FLD41
P32/FLD42
P33/FLD43
P34/FLD44
P35/FLD45
P36/FLD46
P37/FLD47
P40/FLD48
P41/FLD49
P42/FLD50
P43/FLD51
P44/TXD0/FLD52
P45/RXD0/FLD53
P46/CLK0/FLD54
P47/CTS0/RTS0/FLD55
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
P97/DA0/CLKOUT/DIMOUT
P96/DA1/SCLK22
P95/SCLK21
P94/SOUT2
P93/SIN2
P92/SSTB2
P91/SBUSY2
P90/SRDY2
CNVSS
P87/XCIN
P86/XCOUT
RESET
XOUT
VSS
XIN
VCC
P85/INT5 P84/INT4 P83/INT3 P82/INT2 P81/INT1 P80/INT0
P77/TA4IN/TA2OUT/CTS1/RTS1/CLKS1
P76/TA3IN/TA1OUT/CLK1
P75/TA2IN/TA0OUT/RXD1
P74/TA1IN/TA4OUT/TXD1
P73/TA0IN/TA3OUT
P72/TB2IN P71/TB1IN P70/TB0IN

RX-E400
RX-E400
11
No. PORT Name IN/OUT Function
23 P77 CE OUT C2B(LC72722/LC78211)CE OUT [1:DATA transmission]
24 P76 CLK S-CLK LC72722/LC78211 CLK OUT (Serial I/O-1)
25 P75 DAT I S-IN LC72722 DATA IN (Serial I/O-1)
26 P74 DAT O S-OUT LC72722/LC78211 DATA OUT (Serial I/O-1)
27 P73 Mut A OUT AMP MUTE OUT [0:MUTE ON]
28 P72 Mut T OUT Tuner MUTE OUT (TUNER) [1:MUTE ON]
29 P71 Sta IN STATION IN (TUNER) [0:Station exists]
30 P70 ST/MO IN STEREO/MONO IN (TUNER) [0:STEREO]
31 P47 F CE OUT CE OUT(from built-in flash ROM to Busy OUT/EEPROM) [1:DATA transmission(EEPROM)]
32 P46 F CK S-CLK CLK OUT(from built-in flash ROM to CLK IN/EEPROM) (Serial I/O-0)
33 P45 F RX S-IN DATA IN(from DATA IN/EEPROM to built-in flash ROM) (Serial I/O-0)
34 P44 F TX S-OUT DATA OUT(from built-in flash ROM to DATA OUT/EEPROM) (Serial I/O-0)
35 P43 HP IN Head phone detect IN [0:SP 1:HP]
36 P42 DIG 16 OUT DIGIT 16 (16G) [VEE external pull-down]
37 P41 DIG 15 OUT DIGIT 15 (15G) [VEE external pull-down]
38 P40 DIG 14 OUT DIGIT 14 (14G) [VEE external pull-down]
39 P37 DIG 13 OUT DIGIT 13 (13G) [VEE external pull-down]
40 P36 DIG 12 OUT DIGIT 12 (12G) [VEE external pull-down]
41 P35 DIG 11 OUT DIGIT 11 (11G) [VEE external pull-down]
42 P34 DIG 10 OUT DIGIT 10 (10G) [VEE external pull-down]
43 P33 DIG 9 OUT DIGIT 9 ( 9G) [VEE external pull-down]
44 P32 DIG 8 OUT DIGIT 8 ( 8G) [VEE external pull-down]
45 P31 DIG 7 OUT DIGIT 7 ( 7G) [VEE external pull-down]
46 P30 DIG 6 OUT DIGIT 6 ( 6G) [VEE external pull-down]
47 P27 DIG 5 OUT DIGIT 5 ( 5G) [VEE external pull-down]
48 P26 DIG 4 OUT DIGIT 4 ( 4G) [VEE external pull-down]
49 P25 DIG 3 OUT DIGIT 3 ( 3G) [VEE external pull-down]
50 P24 DIG 2 OUT DIGIT 2 ( 2G) [VEE external pull-down]
51 P23 DIG 1 OUT DIGIT 1 ( 1G) [VEE external pull-down]
52 P22 SEG 1 OUT SEGMENT 1 (P1) [VEE external pull-down]
53 P21 SEG 2 OUT SEGMENT 2 (P2) [VEE external pull-down]
54 P20 SEG 3 OUT SEGMENT 3 (P3) [VEE external pull-down]
55 P17 SEG 4 OUT SEGMENT 4 (P4) (VEE internal pull-down)
56 P16 SEG 5 OUT SEGMENT 5 (P5) (VEE internal pull-down)
57 P15 SEG 6 OUT SEGMENT 6 (P6) (VEE internal pull-down)
58 P14 SEG 7 OUT SEGMENT 7 (P7) (VEE internal pull-down)
59 P13 SEG 8 OUT SEGMENT 8 (P8) (VEE internal pull-down)
60 P12 SEG 9 OUT SEGMENT 9 (P9) (VEE internal pull-down)
61 P11 SEG 10 OUT SEGMENT 10 (P10) (VEE internal pull-down)
62 P10 SEG 11 OUT SEGMENT 11 (P11) (VEE internal pull-down)
63 VCC Vcc - Power supply +5V [Back-up capacitor]
64 P07 SEG 12 OUT SEGMENT 12 (P12) (VEE internal pull-down)
65 VSS Vss - GND
66 P06 SEG 13 OUT SEGMENT 13 (P13) (VEE internal pull-down)
67 P05 SEG 14 OUT SEGMENT 14 (P14) (VEE internal pull-down)
68 P04 SEG 15 OUT SEGMENT 15 (P15) (VEE internal pull-down)
69 P03 SEG 16 OUT SEGMENT 16 (P16) (VEE internal pull-down)
70 P02 SEG 17 OUT SEGMENT 17 (P17) (VEE internal pull-down)
71 P01 SEG 18 OUT SEGMENT 18 (P18) (VEE internal pull-down)
72 P00 SEG 19 OUT SEGMENT 19 (P19) (VEE internal pull-down)
73 P57 SEG 20 OUT SEGMENT 20 (P20) (VEE internal pull-down)
74 P56 SEG 21 OUT SEGMENT 21 (P21) (VEE internal pull-down)
75 P55 SEG 22 OUT SEGMENT 22 (P22) (VEE internal pull-down)
76 P54 SEG 23 OUT SEGMENT 23 (P23) (VEE internal pull-down)
77 P53 SEG 24 OUT SEGMENT 24 (P24) (VEE internal pull-down)
IC700 : M30217M8-A103FP (16 bit µ-COM)

RX-E400
12
RX-E400
●KEY INPUT (A-D) PULL UP RESISTOR 33kΩ
Ω
V
KEY 0
(98pin)
KEY 1
(96pin)
KEY 2
(95pin)
0
0 —0.556
POWER
PRESET/BAND
DISPLAY
+6.8k
—1.111
PRESET/TUNING B
MIN
AUTO/MAN'L
TIMER
MEMORY
TIME ADJ
+5.6k
—1.667
PRESET/TUNING N
HOUR
NO KEY
NO KEY
●TUNER MARKET SELECT IN (94 pin, A-D) PULL UP RESISTOR 10kΩ
Ω
V
Market
0
0 —0.556
R model
(50k / 9k)
2k
—1.111
R model
(100k / 10k)
6.2k
—2.222
B, G models
10k
—2.778
U, C models
3.9k
—1.667
A model
IC700 : M30217M8-A103FP (16 bit µ-COM)
No. PORT Name IN/OUT Function
78 P52 SEG 25 OUT SEGMENT 25 (P25) (VEE internal pull-down)
79 P51 SEG 26 OUT SEGMENT 26 (P26) (VEE internal pull-down)
80 P50 SEG 27 OUT SEGMENT 27 (P27) (VEE internal pull-down)
81 P67 SEG 28 OUT SEGMENT 28 (P28) (VEE internal pull-down)
82 P66 SEG 29 OUT SEGMENT 29 (P29) (VEE internal pull-down)
83 P65 SEG 30 OUT SEGMENT 30 (P30) (VEE internal pull-down)
84 P64 SEG 31 OUT SEGMENT 31 (P31) (VEE internal pull-down)
85 P63 SEG 32 OUT SEGMENT 32 (P32) (VEE internal pull-down)
86 P62 SEG 33 OUT SEGMENT 32 (P33) (VEE internal pull-down)
87 P61 SEG 34 OUT SEGMENT 34 (P34) (VEE internal pull-down)
88 P60 SEG 35 OUT SEGMENT 35 (P35) (VEE internal pull-down)
89 VEE –VP - P0,P1,P5,P6 pull-down resistor voltage input [-29V]
90 P107 Audio A-D IN Not used
91 P106 TH A-D IN Heat sinking plate temperature detect IN [0 —VREF]
92 P105 Pro PS A-D IN Power voltage detect IN (protection) [0 —VREF]
93 P104 Fan fe A-D IN Not used
94 P103 Des A-D IN Destination select input (TUNER) [Pull-up at 10kΩ^VREF]
95 P102 KEY 2 A-D IN KEY 2 input [Pull-up at 10kΩ^VREF]
96 P101 KEY 1 A-D IN KEY 1 input [Pull-up at 10kΩ^VREF]
97 AVSS AVss - Connected to VSS(GND)
98 P100 KEY 0 A-D IN KEY 0 input [Pull-up at 10kΩ^VREF]
99 VREF Vref - A-D,D-A reference voltage input [—VCC]
100 AVCC AVcc - Connected to VCC terminal (+5V)

ABCDEFGH
1
2
3
4
5
6
RX-E400
13
FLUORESCENT DISPLAY
V700
PJ250
MOTOR
DRIVE
IC211
Q701
Q703 Q702
IC100
INPUT SELECTOR
1 2 58 59 21 24
~
16 63 100 722 12 99
SEG-1~35DIG-1~16
OPERATION
KEY
SW701~707
95
96
98
97
KEY2 X IN
X OUT
10XOUT
10XIN
RLY. PW Q231
XL701
XL700
KEY1
KEY0
AVSS
12
94
DES
1
30 13
14
15
12 18 19
5
4
7
2
8
15
8
5 6
210
11
20
23
26
2
29
6
25
3
28
7
24
4
27
6
DES
10
CE
8
VOL-UP
7
VOL-DN
4
TH
14
MUT-A
9
PRO-I
1
RLY-SP
5
PRO-PS
17
SYS-I/O
11
CLK
13
DAT-0
F2 F1
12
15
16
17
DAT-I
MUT-T
STA
ST/MO
MAIN. P. C. B.
CB251
TERMINAL No.
25 28 29 30
DAT–I MUT–T STA ST/MO
6
3
2
16
OPE. P. C. B.
CB707
TERMINAL No.
OPE. P. C. B.
OPE. P. C. B.
23
8
7
5
24 26
CE CLK DAT–O
1110
4 3
VOL–UP VOL–DN
35
HP
5
3
7
1
922
8 4
17
19
RLY–SP
9
20
PRO–I
17
SYS-O
D702
1
18
SYS-I
4
27
MUT–A
D701 R709
Q700
+5V
13
92
PRO–PS
+5V –VP F2 F1
89 6436 62
~
66 88
~
INPUT
SELECTER
SW700
5 6
+5V
REMOTE
SENSOR
U700
21
+5V +5V
+5V
VCC VCC
AVCC
+5V-BK
RESET
PD
TIMER
–VP
ENC–B ENC–A
Rem
12S
MUTE
DRIVE
Q271, 273,
277
MUTING
Q250, Q251 POWER
AMP
Q252~255
Q259~262
Q263~266
Q267, 269
PROTECTION
Q272, 275, 276,
279, 280
C. R
R547
AC1+12V
AC3–12V
R345
R548
R358,
359
R346
MUTING
Q281~284
RELAY
DRIVE
Q274
SW250
R only
+12V
AUX
CD
MD REC
TAPE REC
MD PLAY
TAPE PLAY
±12V
±12V
±B
+12V
±12V
IC108
+B
PJ100
M
TONE CONTROL
IC210
BASS TREBLE
VR700
VOLUME
VR210
BALANCE
VR702
VR701
RY250
REST
D704
OPE P. C. B.
MAIN P. C. B.
SPEAKERS
SUB
WOOFER
DG
HP L
RHEAD
PHONES
JK700
REM
(SYSTEM CONNECTOR)
JK250
TE250
14
91
TH
Q256 ~ 258
IC700 µ–COM
TUNER
AM/FM
TIMER
10
11
13
15
2
R745
R551
-VP
D233
RY231
Q231
RY231
Q231
Q540
D270
D540
Q541
D541
Q278
D258
Q232
SUB
TRANSFORMER
12S
12S
GT231
F232
F1
F2
AC1
+B
–B
–B
+B
–B
–VP
–30V
+12V
–12V
F231
TE231
POWER
TRANSFORMER
240V
220V
120V
120V
110V
0V
SW401
F401
C303
C304
D542
U, C, A, B, G
models
U, C, A, B, G
models
MAIN P. C. B.
R model
R model
G only
AC3
IC113 +12V
+5V
TUNER
2
12 13
4.332MHz
XL4
RDS (B,G only)
FM
ANT
GND
AM
ANT
RDS
IC109
LC72722
Q108
MAIN. P. C. B.
CB103
TERMINAL No.
7
RDS
14
3
2
1
DAT-I
MUT-T
STA
ST/MO
15
CE
13
CLK
6
TUL
4
TUR
9
5V
8
12V
TUNER
20
21
22
23
DAT O
CLK
DAT I
CE
TO: µ-COM
FROM: µ-COM
TO: INPUT
AM/FMTUNER
(TUNER PACK)
■BLOCK DIAGRAM
•MAIN: See page19 →SCHEMATIC DIAGRM
•OPERATION: See page 20 →SCHEMATIC DIAGRM

ABCDEFGH
1
2
3
4
5
6
RX-E400
14
CH 2
CH 1
Point q(Pin 11 of IC700)
V : 2V/div, H : 10µsec/div
DC, 1 : 1 probe
0V
Point e
CH 1 : Collector of Q701
CH 2 : Collector of Q702
V : 2V/div (CH 1)
V : 5V/div (CH 2)
DC, 1 : 1 probe, H : 0.5sec/div
Point w(Pin 13 of IC700)
V : 2V/div, H : 50nsec/div
DC, 1 : 1 probe
0V
AC CORD : OFFAC CORD : ON
■PRINTED CIRCUIT BOARD (Foil side)
0V
0V
OPERATION P. C. B. (Lead Type Device View)
DG PRY 12S F1 F2
MAIN (1) W705
#3
PLAYSP —VP PROPS VOLDN PRO-I CLK DAT-O MUT-T SYSIO
ST/MO
TH
DES
VOLUP
CE
DAT-I
MUT-A
STA
MAIN (1)
PRESET/TUNING
INPUT
BALANCE
PRESET/BAND AUTO/
MAN’LMEMORY DISPLAY
BASS
TREBLE
TINR
TOUTR
TFBR
E E
TOUTL
TFBL
TINL
E
HP-R
HP-L
MAIN (3)
#2
W706
STANDBY/ON
PHONES
TIMER
OPERATION P. C. B. (Surface Mount Device View)
2 1
3
13031
50
51
80
81
100
Ref. No. Location
D701 D5
D702 D5
D703 D5
D705 E4
D706 E5
D707 E5
D708 E5
D709 E5
D710 E5
D711 E5
●Semiconductor Location
Ref. No. Location
IC700 D5 Ref. No. Location
Q700 E2
Q701 E5
Q702 E2
Q703 E5

ABCDEFGH
1
2
3
4
5
6
RX-E400
15
■PRINTED CIRCUIT BOARD (Foil side)
MAIN(1)P.C.B.
SYSTEM
CONNECTOR
SUBWOOFER
R
L
SPEAKERS
MAIN (3)
SGND VOL- UP VOL- DN E E T-OUT-R E T-OUT-L E E HP- R HP- L
MAIN (4)
MAIN (2)
ST/MO MUT T STA DAT I CLK DAT O CE 12 Ð12 ETU
B G 12
MAIN (6)
DG
F2 F1
S12
PRY
MAIN (7)
+B
E
+12
DG PRY S12 F2 F1
OPERATION
OPERATION
SYS I/O TH DES VOL UP CE DAT I MUT A STA
RLY SP
ÐVP
PRO PS
VOL DN
PRO I
CLK
DAT O
MUT T
SYS I/O
#7
W250
RE W257
BL W256
RE W255
FREQUENCY
STEP
(R only)
CIRCUIT CHANGES BY MARKET.
U, C R A B, G
C310, 311 X X O O
C305, 306 X X O O
SW250 X O X X
O : USED
X : NOT USED
Ref. No. Location
D251 F3
D252 B4
D253 E3
D254 G3
D255 C3
D256 C3
D257 C4
D258 C3
D270 C4
D540 C4
D542 C4
●Semiconductor Location
Ref. No. Location
Q250 E4
Q251 F4
Q252 F3
Q253 F4
Q254 F3
Q255 F3
Q256 F3
Q257 F2
Q258 F3
Q259 F3
Q260 F3
Q261 E2
Q262 F2
Q263 E3
Q264 E3
Q265 F3
Q266 G3
Q267A F2
Q267C G2
Ref. No. Location
Q269A E2
Q269C E2
Q271 B4
Q272 G3
Q273 B4
Q274 C3
Q275 E3
Q276 F3
Q277 B4
Q278 C3
Q279 G3
Q280 G3
Q281 D4
Q282 D4
Q283 D4
Q284 D4
Q540 C4

ABCDEFGH
1
2
3
4
5
6
RX-E400
16
■PRINTED CIRCUIT BOARD (Foil side)
MD CD AUXTAPE
IN OUT IN IN INOUT
MAIN ( 2 ) P. C. B.
ETU
—12V
12V
CE
DAT O
CLK
DAT I
MUT T
STA
ST/MO
MAIN (1)
—12V
12V
E
R
E
L
E
MAIN (3)
16
15
14
12 1 13 24
85
1
30
CE
CLK
TE
5V
RDS
TE
MUTT
ST/MO
DAT I
DAT O
NC
12V
TUL
TUR
STA
TUNER
W252
#4
4
MAIN ( 3 ) P. C. B.
-12 12 E R E L E
MAIN (2)
HP-L
HP-R
E
E
TOL
E
TOR
E
E
VOL-DN
VOL-UP
SGND
MAIN (1)
TINR
TFBR
TOR
E
E
TOL
TFBL
TINL
E
HPR
HPL
OPERATION
VOLUME
1
58
41
10
MAIN (1)
MAIN ( 4 ) P. C. B.
#5
W253
+B
G
+12
RE
BL
RE
W257
W256
W255
W251
MAIN (1)
POWER
TRANSFORMER
MAIN ( 7 ) P. C. B.
MAIN (6)
F1 F2
#6
CIRCUIT CHANGES BY MARKET.
U, C R A B, G
C162, 163 X X X O
XL100 X X X O
C149, 153, 157 X X X O
C154 X X X O
R160 X X X O
C138, 152 X X X O
R139 X X X O
C132 X X X O
L102, 103 X X X O
R138 X X X O
Q108 X X X O
R134 X X X O
IC109 X X X O
O : USED
X : NOT USED
Point r(Pin12 of IC109)
V : 2V/div H : 0.1 µsec/div
DC range 1 : 1 probe
0V
Ref. No. Location
D210 D2
D541 G2
●Semiconductor Location
Ref. No. Location
IC100 B3
IC108 B3
IC109 B3
IC113 B3
IC210 D2
IC211 E3
Ref. No. Location
Q108 B3
Q541 F2

ABCDEFGH
1
2
3
4
5
6
RX-E400
17
■PRINTED CIRCUIT BOARD (Foil side)
CIRCUIT CHANGES BY MARKET.
U, C R A B G
F231 X X X X O
F401 X O X X X
CB233, 234 X X X X O
J250 O O O O X
R234 O X X X X
J241 O X O O O
R232, 233 X O X X X
C232 X O X X X
Q232 X O X X X
D232 X O X X X
SW401 X O X X X
CB401, 402 X O X X X
O : USED
X : NOT USED
MAIN ( 8 ) P. C. B.MAIN ( 5 ) P. C. B.
● R model
RE
GY
W232
YE
OR
WH
BE
BE
OR
BR
YE
RE
WH
BR
BR
W231
POWER TRANSFORMER
MAIN (6)
VOLTAGE
SELECTOR
MAIN (1)
MAIN (7)
BR
GY
W233
PRY
S12
F1
F2
DG
F1
F2
W234
BR
W231
GY
W232
POWER CABLE
MAIN ( 6 ) P. C. B.
MAIN (9)
MAIN (8)
MAIN(8)P.C.B.
GY
W232
BRW231
POWER TRANSFORMER
MAIN (6)
● U, C, A, B, G models
W234
GY
W233
BR
MAIN (6)
MAIN ( 9 ) P. C. B.
AC OUTLET
VOLTAGE SELECTOR
110V
120V
240V
220V
1 –2/5 –6
2 –3/6 –7
3 –4/7 –8
4 –5/8 –1
Ref. No. Location
D231 B3
D232 B3
D233 B2
●Semiconductor Location
Ref. No. Location
Q231 B3
Q232 B2

ABCDEFGH
1
2
3
4
5
6
RX-E400
18
● ICs
NJM2068D-D LB1641
1
10
● Diodes
1SS133
1SS270A
1SR139-400
HZS5B2TD
HZS5C2TD
HZS12A2TD
HZS12B2TD
HZS202TD
HZS302TD
Anode
Cathode
D5SBA20-401
LC78211LC72722
M30217M8-A103FP
2SA1708 (S, T)
2SC4488 (S, T)
2SC4481 (S, T)
B
CE
EB
C
2SA1740S (R, S)
2SA1317 (R, S, T)
2SC3330 (S, T)
DTA114ES
2SA844PDTZ (D)
2SA970 (GR, BL)
2SC1815 (Y)
● Transistors
2SC1890A (D, E)
2SC2229 (O, Y)
2SC2240 (GR, BL)
2SC2878 (A, B)
B
C
E
2SA1694 (O, P, Y)
2SC4467 (O, P, Y)
BCE
BCE
2SD2396 (J, K)
2SA1037AK (Q, R, S)
DTC144EKA
C
E
B
+
–
30 1
15
51
50
31
81
80
100
30
1
1SS355
UDZS5.1B
UDZS6.2B
Anode
Cathode
■PIN CONNECTION DIAGRAM
1
4
8
1
24
12
S1NB20
+–
NJM78L05A-T3
123
1:INPUT
2:COMMON
3:OUTPUT

ABCDEFGH
1
2
3
4
5
6
IJK
7
8
RX-E400
19
■SCHEMATIC DIAGRAM (MAIN)
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Zand
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
Each voltage represents the voltage when receiving FM (stereo) signal and the voltage in the parentheses ( ) is the voltage when receiving AM signal.
IC109 : LC72722
RDS Decoder & Controller
+
REFERENCE
VOLTAGE
57kHz
bpf
(SCF)
CCB
TEST
PLL
(57kHz)
ANTIALIASING
FILTER SMOOTHING
FILTER
RAM
(24 BLOCK DATA) ERROR CORRECTION (SOFTDECISION) SYNC/EC CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK(4.332MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5 T6 T7
X IN
VREF FL OUT C IN
X OUT
314
15
19
18
24
1 5 6
4
2
20
21
22
23
7
8
9
10
11 16 17 13 12
Point r(Pin12 of IC109)
V : 2V/div H : 0.1 µsec/div
DC range 1 : 1 probe
0V
IC101, 210 : NJM2068D-D
Dual OP-Amp
IC100 : LC78211
Analog Function Switch
L2
L4
L3
LCOM1
L1 1
2
3
4
5
L6
LCOM2
L5 6
7
8
L8
LCOM3
L7 9
10
11
V
DD
19
V SS
16
V EE
12
RES 18
S17
LEVEL SHIFTER
LATCH
SHIFT REGISTER
R2
R4
R3
RCOM1
R1
R6
RCOM2
R5
R8
RCOM3
R7
20
22
30
29
28
27
26
25
24
23
21
CONTROL
15 CL
14 D1
13 CE
23
P1
5
IN 1
1
GND
4
VZ
6
IN 2
OUT 1
8
VCC 2
10
OUT 2
9
P2
INPUT LOGIC
PRE DRIVER
7
VCC 1
IC211 : LB1641
Motor Driver
INPUT SELECTOR BUFFER
REGULATOR RDS DECODER MOTOR DRIVE
MAIN POWER SUPPLY
SUB POWER SUPPLY
REGULATOR
TONE CONTROL
AMP
POWER AMP
MUTE
MUTE
PROTECTION
MUTE DRIVE
TUNER(Lch)
11.9
11.5
14.1
0
13.9
13.9
0.7 0.5
0
14.2 35.6
37.6
14.7
0
-37.7
-37.7
0
0
0
-14.8
-14.8
-27.4
-14.3
23.9
0
11.9
37.6
37.5
37.5
0
37.1
1.10.5
37.6
0.5 0
0
-0.5
-37.7
-0.5
-1.1
-37.7
37.6
37.5 37.5
0
0
0
37.5
37.2
0
0
0
0
0
0
0.7
-29.1 -29.7
0
0
0.5
0.7
0.5
11.9
000
0
14.2
-14.30
0
4.8
0.1
0.1 0
14.2
0.1
0.1 0
-14.3
0
0
-2.4
00
0.6
-36.3 -37.2
00
0.6
-36.4 -37.2
00
-36.4
-1.1
-37.0
-36.3
-37.0
-1.1
-1.1
-0.5
-37.7
-0.5 0
-37.7 0
0
0
37.2
000
-0.1
0
0
-0.1
00
-0.1
00
-0.1
0.5 -37.6
0
1.0 37.2
0.5
-1.1
1.1
-0.4
-1.1
1.1
-0.4
-2.4
14.2
0
0
0 0
0
0
0 0
0
0
0
0
0 0
0
0
14.2
0
0
0
-14.3
0
0 0 0 0
0 0
0 0
AC12.0
0
0.7
0
AC4.4
AC58.4
r
0 (0) 0 (0) 0.1 (0) 4.7 (4.7) 4.9 (0.1) 0 (0) 4.8 (4.8)
2.3 (2.3)
2.4 (2.4)
2.4 (2.4)
2.4 (2.4)
4.8 (4.8)
0 (0) 0 (0) 0 (0)
CIRCUIT CHANGES BY MARKET. O : USED X : NOT USED
SAME PAGE
[D-5]/[C-6]
SAME PAGE
[F-3]
P-20 [C-7] P-20 [F-7]
P-20 [H-4] SAME PAGE
[A-5]
SAME PEGE
[D-5]/[C-6]
SAME PAGE
[I-2]
SAME PAGE
[A-5]
SAME PAGE
[I-2]
SAME PAGE
[A-5]
–+
OUT 1
–IN 1
–V CC
+V CC
OUT 2
1
2
3
45
+IN 1 –IN 2
+IN 2
–+
6
7
8

ABCDEFGH
1
2
3
4
5
6
IJKL
7
8
RX-E400
20
■SCHEMATIC DIAGRAM (OPERATION)
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Zand
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
CPU
RESET
REGULATOR
-28.8 -28.8 -26.6 -24.5 -28.8 -28.8 -26.6 -26.6 -26.6 -24.5 -24.5 -26.7
-26.7 -26.7 -26.7 -26.7 -26.7
-23.9 -23.9
-24.1
-29.1
4.9 5.5
4.8 5.5
5.5
6.1
11.9
6.1
0
11.9
7.3
4.7
0
4.9
4.9
0
0
0
0
6.7
0
11.9
11.2
-28.8
-28.8
-26.7
-26.7
-26.7
-26.7
-26.7
-26.7
-26.7
-26.7
-28.8 -24.5 -26.6 -28.8 -28.8 -28.8 -24.6 -26.6 -28.9 -28.9 -28.9 -24.6 -26.6 -28.9 -28.9
0
-28.9
4.8
-24.6 -26.7 -26.7 -28.9 -28.9 -24.6 -28.9 -26.7 -24.5 -24.5 -26.7 -26.7
4.7
0 0
4.9 4.9
0 0
0
1.1
1.6
4.7
2.3
0
2.1 4.8 0
0
0
0
4.7
0
4.9 4.9
0
4.8
0.1
0
4.7 4.7 3.8 4.8
-26.7
-26.7
-26.7
-26.7
-26.7
-26.7
-26.7
00
0
0
0
-28.8
-26.6
-26.6
-26.6
-24.5
-24.5
-26.7
-28.8
-29.1
2.5
0
0
4.9 4.9
0
4.7
4.9
0
0
2.7
2.5
1.8
4.9
4.9
0
4.9
4.9
4.9
-24.6 -24.6 -26.6 -28.9 -28.9 -28.9 -24.6 -24.5 -24.5 -26.6 -28.9 -28.9 -28.9 -28.9 -28.9 -28.9 -24.6 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7 -26.7
w
q
e
P-19 [E-3] P-19 [F-3]
P-19 [F-3]
CH 2
CH 1
Point q(Pin 11 of IC700)
V : 2V/div, H : 10µsec/div
DC, 1 : 1 probe
0V
Point e
CH 1 : Collector of Q701
CH 2 : Collector of Q702
V : 2V/div (CH 1)
V : 5V/div (CH 2)
DC, 1 : 1 probe, H : 0.5sec/div
Point w(Pin 13 of IC700)
V : 2V/div, H : 50nsec/div
DC, 1 : 1 probe
0V
AC CORD : OFFAC CORD : ON
● V700 : 16-BT-67GN (V3579300)
●PIN CONNECTION
NOTE 1) F1, F2 ........ Filament
2) NP .............No pin
3) NX .............No extend pin
●GRID ASSIGNMENT
*2
$2
PATTERN AREA
q
$1
●ANODE CONNECTION
4) P1~P35 ......Datum Line
5) 1G~16G ..... Grid
6) IC ............... Internal connection
7) Pin No.37 and 51 are connected internally.
0V
0V
■DISPLAY DATA