Kenwood RXD-951 Service Manual page 7

3. Key matrix
FL driver u-COM (uPD780204-038) : (X14-) IC1
VOLTAGE (V) AD0 (33pin)
0 ~ 0. 82 POWER
0. 84 ~ 1. 64 –
1. 66 ~ 2. 52 –
2. 54 ~ 3. 38 –
3. 40 ~ 4. 18 –
4. 20 ~ 4. 78 –
* 1) • EXCEPT : RXD-V616/V818
* 2) • RXD-V616/V818/V919 : KARAOKE
* 3) • RXD-V616/V818 : SOUND
4. Main microprocessor
4-1 Microprocessor periphery block diagram
(RXD-951/A700/A900)
CD MECHA
CDM-27
X14, IC1
FL DRIVER uCOM
uPD780204
X09, IC11
RDS IC
SAA6579
X32, IC2
DSP
CXD2587Q
CIRCUIT DESCRIPTION
AD1 (32pin) AD2 (31pin)
EX. BASS CD PGM
* 1) SOUND DUBBING
* 2) SRS
INPUT * 3)
MODE / DEMO SET
TIMER –
• Other : DISPLAY
• Other : LISTEN MODE
X28, IC6
EXPANDER IC
TC74HC166AP
X09, IC10
M38199MF-080FP
M38199MF-083FP
u-COM
X09, IC9
SPEANA IC
BA3834SK
RXD-951/A700/A900/V616/V818/V919
AD3 (30pin) AD4 (29pin) AD5 (28pin)
CD 4
TUNING UP
TUNING DOWN CD ¢
CD 7
BAND
CD 6
AUTO
CD 0
ENTER
TAPE ¶
–
X05, IC2
PLL IC
LC72131
AD6 (27pin)
A / B DOLBY NR
TAPE ¡
REV MODE
TAPE £
DISC 1
TAPE 7
DISC SKIP
TAPE ™
DISC 2
TAPE 1
DISC 3
DECK MECHA
X08, IC3
DOLBY IC
M62460FP
X09, IC1
SELECTOR IC
NJU7313AL
X08, IC4
E.VOL (C,S)
M62429FP
X09, IC4
SYSTEM IC
M62430FP
7